GPS's navigation application

Satellite technology can be traced back to the first generation of satellite navigation systems of maritime navigation to traced back to the 1960s. However, this satellite navigation system was originally designed mainly to serve the polar region and cannot be continuously navigation. The time interval of its positioning changes with latitude.It is above 70 degrees north and south latitude, and the average positioning interval does not exceed 30 minutes, but it takes 90 minutes near the equator. The second and third generation transit satellites launched in the 1980s Navars and Oscars make up10 to 15 minutes.In addition, it is difficult to improve the positioning accuracy (the speed of the Ship is required to accurately know the speed of the Ship), which is mainly used for 2 -dimensional voyage.

The emergence of the GPS system overcomes the limitations of the Transit system, not only high accuracy, continuous navigation, and strong anti -interference capabilities; it can also provide seven -dimensional space -time position speed information.In the initial experimental navigation equipment test, GPS showed that it could replace the TRANSIT and roadbirth radio navigation systems, and played the epoch -making role in navigation navigation.It is difficult to imagine which Ship is not equipped with GPS navigation systems and equipment. navigation applications have become the largest users of GPS navigation applications. This is difficult to compare with users in any other field.

There are many GPS navigation users, and their classification standards are also different. If they are divided according to the type of route, GPS navigation navigation can be divided into five categories: ocean navigation; coastal navigation; port navigation; inland river navigation; lake navigation.

Different stages or regions also have different environmental requirements for navigation safety, but they are to ensure the minimum navigation traffic conflict, and the most effective use of the increasingly crowded routes, ensuring sailing safety, improving transportation benefits, and saving energy.There are roughly the following categories according to the function of the navigation system:

1. Autonomous navigation

The independent navigation system is suitable for any of the above five routes. It is basically a simple navigation system. Its main feature is to provide users with location, speed, flight direction and time information., No communication system.It is adapted to a Ship that sails on any sea, lakes, and inland, from large ocean cargo ships to private yachts.

2. Port management and guidance of entering the port

This system is mainly used for Ship scheduling management at port/pier and guidance to Hong Kong ships to ensure the safety and order of voyage of ports/pier.The system requires two -way data/phonetic communication to facilitate the leader to guide the Ship; the context/sea map of the port area shows that the mooring ships and the available port routes are avoided to avoid collision.This system requires high accuracy of navigation systems, and uses differential GPS and other enhanced technologies.

3. route traffic management system

This type of system is similar to 2, but it is mainly used for Ship navigation and management on the offshore and inland river routes, and usually requires support of satellite communication systems, such as Inmarsat.

4. Tracking the surveillance system

Such systems are mainly used for maritime patrol boats, anti -smuggling and various yachts, especially private yachts to prevent theft.According to the specific use objects, some systems need to give navigation parameters and two -way data/phonetic communication, such as anti -smuggling boats.Sometimes there is no need to give navigation parameters. For private yacht anti -theft, only one -way data communication is required. Once theft occurs, the navigation system on the yacht continues to send its own position and to the relevant center in order to track it.

5. Emergency rescue system

The system also includes amphibious aircraft, helicopters and land vehicles.It is suitable for all five types of routes to search and rescue all kinds of sea, lakes, and inland risks, dangerous ships and people.This type of system requires two -way data/phonetic communication, which requires fast response time and high positioning accuracy.

6. GPS/Sound combination is used for underwater robots navigation

This type of combination system can be used for underwater pipeline laying and maintenance (required visual system), hydrological measurement, and other sub -operations, such as underwater survey for port/dock, so that the channel obstruction is cleared and the channel is unobstructed.Can be used for ocean fishing, fishing boat operation guidance, etc.

7. Other applications

The navigation techniques used are mainly:

GPS (GNSS);

Sound technology;

INS;

navigation

Radio navigation technology;

Image matching technology;

Other technologies.

The main communication technology adopted is:

FM and TV sub -carrier unidirectional data/speaking communication;

By -way data communication of the benchmark network;

Cluster communication;

Honeycomb communication;

Land mobile digital communication;

Satellite mobile communication;

Drives of traffic.

The first five communication technologies are mainly used for offshore, inland and lake areas.

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navigation interface stops Running Recovery method

When using car navigation, you will encounter some problems more or less, when you encounter What should I do when the car navigation system interface stops Running?How to restore the car navigation system interface?The following is The reasons for stopping the operation and solution of the car navigation system interface, let's take a look together.

1. Excessive program cache: In the mobile phone settings-Application-All-Find a procedure that appears to stop Running-clean up data (most mobile phones can be solved through this method);

2. The mobile phone memory is too low: there are many system Running procedures and insufficient memory.

3. The installation location is wrong: Enter the settings-storage-preferred installation location-determined by the system to change the storage location.The program is not compatible: It is recommended to uninstall and reinstall the program or uninstall some procedures that are not compatible with the system;

4. Procedure itself: There are problems with some programs itself. If there is a problem with the software component in the early stage, the program causes a prompt to stop Running.(This situation can be concluded by comparing multiple different brands of machines);

5. If the above method is still stopped after exclusion, it is recommended to restore the factory settings, or redirect the firmware.

Common faults of car navigation systems

GPS cannot use the vehicle power supply

Under normal circumstances, GPS's battery life is about 1-2 hours, so when long-distance driving, vehicle power is needed.However, some car owners found that the prompts are always not bright whenever they use the vehicle power supply.After the inspection, it was found that the fuse of the original cigarette heater was burned, so the external power supply could not be used.At this time, the owner often believes that the quality of the car power supply of the GPS is too poor, but after multiple replacement, the situation is still.

In fact, the reason for the unable to use the vehicle power supply by GPS is not exactly caused by the quality of the vehicle power supply. Some of the reasons are caused by the design of the cigarette lighter.

Simple judgment and solution:

The owner can first observe which interface of his GPS vehicle power supply belongs to which one shows the following figure. When the A -type plug is plugged out, the fuse will occur, while the B plug will not happen.The owner can replace the vehicle power supply of the B plug.

For car owners who use the car plugs using A interface, if you do not want to change the vehicle power supply, you can insert it after starting the car and before the fire off the fire to prevent instant high -voltage burning.If you think this method is troublesome, you can choose to make a simple transformation of the cigarette lighter in the car.The metal piece above the cigarette jack is flat (red standard), so that the GPS cannot use the vehicle power supply.

GPS cannot search for satellite signals

Satellite signals are the basis for GPS to locate and navigation.If you cannot search for a satellite signal, then GPS cannot perform navigation work, which means that your GPS is just a scrap iron.There are 3 cases that cannot search for satellite signals in general GPS:

1. GPS belongs to the cottage in the cottage, and the "use period" is short.

2. The satellite signal is weak, and you can work normally after adjusting the position.

3. Drives from other electrical appliances in the car, it can be used normally after exclusion.

Simple judgment and solution:

To identify the reason why the satellite signal cannot be searched, you can try to locate on an empty Square.Satellite signals are easier to capture on the empty Square, and electrical interference in the car can be excluded.If in this case, it is still impossible to search for satellite signals, then 99%may be that your GPS belongs to a cottage in a cottage, and you should negotiate with the purchase merchant for replacement or even refund.

If you cannot search for signals in the car, when you are close to the window or even the window, you can get a weak signal. We can judge that it is the second case.The ability of GPS Star Search is closely related to the hardware of GPS. Generally, the navigator has built -in antennas. The built -in antenna is relatively small. The receiving original satellite signals are relatively weak, and they cannot even search satellite signals.Owners can choose to install GPS amplifiers to enhance GPS signals.

When using a variety of electrical appliances, such as driving recorders, GPS cannot be used normally.Well, the reason why the GPS signal cannot be searched is most likely the result of the interference of electronic products.Because the signal frequency band is too close, it leads to mutual interference.The owner can choose to use only one of the electrical appliances, or try to wrap the circuit board with Tin foil to eliminate the interference by itself.

The vulnerable to the GPS bracket response to the screen reaction

The three common problems are that the suction cup of the GPS bracket is easy to loosen, and the back clip is easy to break.In the GPS accessories, the bracket is the most prone to problems, especially the suction cup and the back clip.Many car owners report that the quality of the bracket's suction cup is too poor, completely sticky, and the road conditions have fallen slightly; the back clips are also very easy to break, and it will break.

Simple judgment and solution:

In fact, the phenomenon of loosening the suction cup generally occurs after a period of use. When the circular glue part of the suction cup is entered due to the air, the gap is left out of the vacuum part.fall.Frequent paste and extraction can also reduce the attachment function of the suction cup.The owner can wipe the front windshield and navigation bracket suction cups to reduce the gap left in the vacuum part.If the loose time is too frequent, GPS brackets should be replaced to avoid hidden safety hazards.

The back clip is broken, which is more caused by human factors.The unfairly demolition method of the owner makes the back clip that is not sturdy more easily broken.When removing, pay more attention to the direction of the back clip. Unfortunately, you can really be broken. You can buy universal brackets for replacement.

GPS screen reaction is slow

Touch screen life has become an indispensable part of our lives, and GPS is one of the earliest electronic products to apply touch screen technology.Slow screen response will not only affect the query effect of the handwriting input, but also when you click in the query, there may also be deviations.There are two types of screen reactions in general GPS: there will be two types of slow -screen reactions: there will be two types:

1. The screen is damaged by the sharp object

2. Degrees of screen recognition

Simple judgment and solution:

To identify the reason for the slow response of the screen, you can choose to enter the place name in your search destination.If the words in the handwritten box are always intermittent, it is difficult to be coherent, and even divided into multiple parts.Then the touch screen is likely to be damaged by sharp objects.Generally, this situation will only appear when it is more than half a year, and there is no solution.The key is the usual use and maintenance.When input, choose a handwriting pen with GPS, and try not to use the screen or toothpicks with sharp things for a long time as alternative with your fingertips.

The situation of screen recognition is generally reflected in the scope where the user's clicks cannot be accurately identified.For example, when the owner was selected by the route, the "best route" was clicked, while GPS recognized it into an adjacent "high -speed priority".At this time, you can re -adjust the screen.Generally, the screen adjustment is located under "setting", and the GPS of different brands will be slightly different.After entering the adjustment menu, after appearing a "Ten" calibration symbol appeared on the screen, click on the middle position of the handwriting pen to the intermediate position of the cross according to the prompts.

Summary: When the GPS fails, don't rush to blame the quality of the products sold by merchants.We should start with our own habits to see if we have improper use, which has accelerated GPS aging and damage.For GPS, which does have quality problems, the owner should resolutely safeguard his interests and replace the goods or even refund it.

1. The composition of the GPS map

The GPS map is a brand new geographical information carrier produced by the development of computer technology. The GPS map is born out of the map, presented the map in a digital manner, and can only be used in the computer.GPS maps have the functions of displaying, transmission and analysis. GPS maps can provide better presentations than traditional maps, such as enlarged, reduced, roaming, search, and path planning.

2. The difference between GPS map and traditional paper map

The conventional paper map emphasizes the data carrier, symbolization, and display. It is one of the roots of the development of GPS maps, and the GPS map focuses on analysis. Its expression method is much stronger than traditional maps. It has the following characteristics:

A. Integration of sound, graphic and digital multimedia, combine the intuition of graphics, the accuracy of numbers, the guidance of sound, and intimacy, make full use of the user's various sensory.

B. Inquiry retrieval and analysis function can support two -way retrieval from map graphics to attribute data and attribute data to graphics data.

C. Graphic dynamic changes function, from opening window scaling, browsing reading and other basic functions to the end of the animation function, multi -dimensional animation graphics simulation, etc.

D. With a good user interface, the use of users from the map generation process.

E. The multi -level ratio is converted from each other. It can match the screen content of the screen to perfectly match the current proportion, and automatically use the choice or synthesis of the compatibility of the ratio to the scale.

3. GPSHow is navigation electronic map collected and processed?

There are many collection methods for aviation electronic maps. There are mainly. Through remote sensing satellite pictures, analysis of the road network. In addition, based on the purchase and mapping unit from various places, the accuracy of the map is compared.By parsing through unmanned aircraft aerial pictures to obtain map data, and then from the national basic geographical information center activity related information;

The other is to collect on the spot, using artificial and vehicles for field collection and taking pictures to obtain map information.In these collection methods, there are only third types. The map data obtained on the spot is the most accurate and detailed.At present, there is only Ruitan Wanfang's Taoist Map of Ruitan Fang. In addition, many other companies have started to collect on the spot, but it is already later than Ruitanfang in terms of time.4Year.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

What are the categories of GPS navigator

Classification by the purpose of the receiver

1.navigation receiver

This type of receiver is mainly used for navigation of the motion carrier, which can give the position and speed of the carrier in real time.This type of receiver generally uses C/A code pseudo -distance measurement. The real -time positioning accuracy of the single point is low, generally 10m, and the SA affects 100m.This type of receiver is cheap and widely used.Depending on the application field, such receivers can be further divided into:

car type -for vehicle navigation positioning;

navigation type -for Ship navigation positioning;

Aviation type -for aircraft navigation positioning.

Due to the fast Running speed of the aircraft, the receiver used on aviation requires to adapt to high -speed exercise.

Starry type -for navigation positioning for satellites.Because the speed of satellites is as high as 7km/s, the requirements for receiving machines are higher.

2.Ground -type receiver

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.

3.Time -type receiver

This type of receiver mainly uses the high -precision time standard provided by the GPS satellite to be awarded, and it is often used in the time of time in the observatory and radio communication.

Classified by the carrier frequency of the receiver

Single -frequency receiver

Single -frequency receiver can only receive the L1 carrier signal, and the carrier phase observation value can be determined.Because the effect of the ionization layer delay cannot be effectively eliminated, a single -frequency receiver is only applicable to the precision positioning of the short -based line (& lt; 15km).

Dual -frequency receiver

The dual -frequency receiver can receive L1 and L2 carrier signals at the same time.The use of dual -frequency delay on the ionization layer can eliminate the effects of ionizing layers on the delay of electromagnetic wave signals. Therefore, dual -frequency receiver can be used for precision positioning of thousands of kilometers long.

Classified by the number of channel channels

The GPS receiving function also receives the signals of multiple GPS satellites at the same time. In order to separate the signal of different satellites received to achieve the tracking, processing and measurement of satellite signals, devices with such functions are called antenna signal channels.The types of channels that the receiver can be divided into: multi -channel receiver; sequential channel receiver; multi -channel multi -purpose channel receiver.

Classified by the working principle of the receiver

Code -related receiver

Code -related receiver uses code -related technologies to obtain pseudo -distance observation values.

Square receiver

The Square receiver uses the Square technology of the carrier signal to remove the adjustment signal to restore the complete carrier signal. The phase difference between the carrier signal generated in the receiving machine through the phase meter is determined by the phase difference between the carrier signal generated in the receiverEssence

Hybrid receiver

This instrument is a comprehensive advantage of the above two receiving machines. It can obtain the code phase pseudo distance or the carrier phase observation value.

Interference receiver

This receiver uses the GPS satellite as a radio power source. The interference measurement method is used to determine the distance between the two measuring stations.

GPS navigator is classified according to use

1As well asnavigation receiver

This type of receiver is mainly used for navigation of the motion carrier, which can give the position and speed of the carrier in real time.This type of receiver is generally adoptedC/ACode pseudo -distance measurement, a single point of real -time positioning accuracy is low, generally10M,haveSAThe influence is100MEssenceThis type of receiver is cheap and widely used.Depending on the application field, such receivers can be further divided into:

car type -for vehicle navigation positioning;

navigation type -for Ship navigation positioning;

Aviation type -for aircraft navigation positioning.Due to the fast Running speed of the aircraft, the receiver used on aviation requires to adapt to high -speed exercise.

Starry type -for navigation positioning for satellites.Due to the high speed of satellites7km/sThe above, so the requirements for receiving machines are higher.

2. Destiny receiver machine

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.

3. Time -type receiver

This type of receiver is mainly usedGPSThe high -precision time standard provided by satellites is often used in the time of time in the Observatory and radio communication.

Classified by the carrier frequency of the receiver

1. Single -frequency receiver

Single -frequency receiver can only receiveL1Carrier signal, determine the observation value of the carrier phase.Because the effect of the ionization layer cannot be effectively eliminated, the single -frequency receiver is only applicable to the short -based line (& lt; 15km) Precision positioning.

1. Dual -frequency receiver

Dual -frequency receiver can be received at the same timeL1,,L2Carrier signal.The use of dual -frequency delay on the ionization layer can eliminate the effects of ionizing layers on the delay of electromagnetic wave signals. Therefore, dual -frequency receiver can be used for precision positioning of thousands of kilometers long.

Classified by the number of channel channels

GPSReceive functions at the same timeGPSSatellite signals, in order to separate the signals of different satellites received to achieve the tracking, processing and measurement of satellite signals. Meters with such functions are called antenna signal channels.The types of channels that are received according to the receiver can be divided into:

Multi -channel receiver

Order channel receiver

Multi -way multi -use channel receiver

Classified by the working principle of the receiver

Code -related receiver

Code -related receiver uses code -related technologies to obtain pseudo -distance observation values.

Square receiver

The Square receiver uses the Square technology of the carrier signal to remove the adjustment signal,,To restore the complete carrier signal, the phase difference between the carrier signal generated in the receiving machine through the phase meter is determined to determine the pseudo -distance observation value.

Hybrid receiver

This instrument is a comprehensive advantage of the above two receiving machines. It can obtain the code phase pseudo distance or the carrier phase observation value.

Interference receiver

This kind of receiver isGPSAs a radio source, the satellite uses the interference measurement method to determine the distance between the two stations.

go through20The practice of the rest of the year proves,GPSThe system is a high -precision, all -weather and global radio navigation, positioning and timing multi -functional system.GPSTechnology has developed into an international high -tech industry with multi -field, multi -mode, multi -purpose, and multi -model.

MeasuringGPS

The ground -type receiver is mainly used for precision land measurement and precision engineering measurement.This type of instrument mainly uses carrier phase observation values for relative positioning, with high positioning accuracy.The structure of the instrument is complicated and the price is more expensive.According to the use of use and accuracy, it is also divided into static (single -frequency) receiver and dynamic (dual -frequency) receiver.RTKEssence

carGPS

When it is made through hardware and softwareGPSWhen the positioning terminal is used for vehicle positioning, it is called a carGPS,However, the positioning alone is not good, and this positioning information must be passed to the alarm center or on the carGPSWith the holder, we call it a third party.soGPSThe positioning system also containsGSMNetwork Communication (mobile phone communication), passGSMThe network sends satellite positioning information to a third party by SMS.Interpret SMS with a microcomputer and display the location of the vehicle on the electronic map.This realizes the carGPSposition.At the same time, install the corresponding detection sensor on the car, and use the carGPSPositioningGSMThe network communication function can also send the anti -theft alarm information to a third party, or send this alarm phone and SMS directly to the owner's mobile phone, complete the car to complete the carGPSanti -theft alarm.It can be seen here that the carGPSPositioningGSMThe network part is actually a smartphone that can communicate with third parties. You can also seize the vehicle by the driver, and the driver is sent to the third party.So the carGPSPositioning is positioning, anti -theft, and anti -robbery.

Similar carGPS

Similar carGPSTerminals include positioning mobile phones, personal positioners, etc.GPSSatellite positioning is due to the third -party positioning service, so it is necessary/ /Annual service fee.

All currentGPSThere is no navigation function for positioning the terminal.Because the hardware and software need to be increased, the cost is increased.

GPSEarly warning device

GPSThe early warning device is passedGPSSatelliteGPSSet the coordinates in the early warning device to complete, such as encountering an electronic eye, and then set up a coordinate directly below the electronic eye through the relevant device.Before300Early warning will start around Mi, telling the owner that there is an electronic eye test in front of the owner, and it cannot be drove over speed, which plays a warning role.Such accuracy is related to the amount of data points, mainly to achieve the use of satellite positioning.

GPS meaning in Chinese

GPS is the abbreviation of English Global Positioning System.GPS started a project of the US military in 1958 and was put into use in 1964.In the 1970s, the U.S., sea, and air forces jointly developed a new generation of satellite positioning system GPS.The main purpose is to provide real -time, all -weather and global navigation services for the three major fields of land, sea and air, and some military purposes such as intelligence collection, nuclear explosion monitoring and emergency communication. After more than 20 years of research experiments, it costs $ 30 billion. By 1994The global coverage rate of up to 98%of the 24 GPS satellite constellation is completed.

GPS has another meaning in the mechanical field: product geometric technical specifications (GPS).Another meaning is G/S (GB Per Second).GPS (Generalized Processor Sharing) broadening is a special term in processor sharing and network service quality control.

Common functions of GPS navigator

The GPS navigator can help users accurately locate the current position, and calculate the itinerary according to the established destination. The GPS navigator guides the instruments of users to the destination through the map display and voice prompts.Usually we use the car GPS navigator.The operation of the GPS navigator relies on GPS for short.It is composed of three parts: space satellite, ground monitoring and user receiving.

Map query

You can search for the destination you want to go on the operation terminal.

You can record the location information you often go to, and keep it, and you can share these location information with others.

Vaguely query your attachment or information about gas stations, hotels, cash machines and other information near a certain location.

Route planning

The GPS navigation system will automatically plan a line according to the starting point and destination you set.

The planning line can set whether to pass some ways.

The planning line can set whether to avoid high -speed functions.

Automatic navigation

Voice navigation: Voice provides driving information to the driver in advance to the driver, such as a guide to the road, such as a guide, telling you how to drive to your destination.The most important function in navigation allows you to reach your destination without watching the operation terminal.

Screen navigation: On the operation terminal, the map, the current position of the car, the speed of driving, the distance of the destination, the planned route prompt, the driving information prompted by the intersection.

Re -planning line: When you do not drive according to the planned line, or go to the wrong intersection, the GPS navigation system will re -plan a new line to reach your destination according to your current position.

Automatic voice guide

When tourists use portable tourist navigators to approach the attractions, the navigation system shows the connotation and more vividly to the Park scenic spots and display historical relics in a graphic manner, so that tourists can extend their connotation in the process of watching the scenes and exhibits.Visitors have fully appreciated the appearance of the scenic area and exhibits, and they have gained rich knowledge.

GPSPositioning anti -theftFunction

12. The vehicle is illegally moved, and automatically dial -up the police and the SMS notification of the alarm!And you can learn at any time to learn the accurate coordinate position and dynamics of the vehicle!

2The vehicle is illegally moved,GPSPositioning the anti -theft of the alarm automatically and expel the thief!

3The vehicle is illegally moved,GPSPositioning the anti -theft device automatic oil breakstrone short electricity!Let the thieves be unable to start!

4, The vehicle is illegally moved or stolen, the user can move/ /In static conditions, lock the motor vehicle position and call the police to track and chase thieves in time!

5The vehicle is illegally moved. Users can lock the motor vehicle position through a smartphone, or inquire about the dynamic position of the motor vehicle by the Internet. It can also use a third -party navigation function to lock the target!

6, The vehicle is hijacked, one -click dial can passGPSPositioning the anti -theft device anti -control vehicle, remote positioning monitoring, or driving the robbers!

7NothingGPSSatellite signal areas, automatically store the coordinates before signal, lock the thief dens or blind spots.

8Faithful guards, loyal bodyguards lurking in motor vehicles!With a power -off automatic memory settings, after re -powering, the data status of the working data state is automatically recovered before power off.

9, Actively send a greeting text message or holiday reminder SMS once a month; a warm prompt will be sent to the SMS every two monthsGPSPositioning anti -theft mobile phone card recharge.When the voltage of the car battery or independent power supply is too low, it will automatically send a prompt charging SMS to the host user.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;