source:truck tracking webfleet solutions release time:2023-08-12 Hits: Popular:realtime gps tracker online
There are two types of coordinate representations: 2D and 3D. When GPS can receive signals from four or more satellites, it can calculate the local 3D coordinates: longitude, latitude, and altitude. If it can only receive signals from three satellites, it can only calculate the 2D coordinates: accuracy and latitude. At this time, it may also display altitude data, but this data is invalid. Most GPS systems can not only display coordinates in Lat/Long format, but also use coordinate systems such as UTM (Universal Transverse Mercator) to display coordinates. However, we generally use the LAT/LONG system, which is mainly determined by the coordinate system of the map you are using. When Selective Availability is turned on, the horizontal accuracy of GPS is between 100-50 meters, depending on the amount and strength of satellite signals received. If you have arrived according to GPS instructions, take a look around and you should find your target within an area about the size of a football field.
When SA is turned off, the accuracy can reach about 15 meters. The high accuracy is worse due to the system structure. The display method of longitude and latitude can generally be chosen according to one's own preferences, including "hddd. dddd", "hddd * mm. mm", "hddd * mm" ss. s "(where" * "represents" degree ", the same below). The length of the Earth's meridian is 39940.67 kilometers, with a latitude change of 110.94 kilometers, a minute of 1.849 kilometers, and a second of 30.8 meters. The equatorial circle is 40075.36 kilometers, and the latitude in Beijing is around 40 degrees north latitude, with a latitude circle length of 40075 * sin (90-40), At one point, the longitude of this place was 276 kilometers, with one minute being 1.42 kilometers and one second being 23.69 meters. You can choose a certain display method and change the numbers to correspond to how many meters the ground has moved. This way, you can establish an approximate correspondence between the longitude and latitude and the actual mileage. Most GPS systems have the function of calculating the distance between two points, which can provide accurate distance between two coordinates. There are two ways to display height: English and metric. Go to the GPS SETUP page and set it to metric, so that other displays such as speed and distance will also be in metric.
Read recommendations:
C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
The Meaning of GPS.4G GPS Tracker for vehicles wholesaler
The manufacturer summarizes the main application scope of Xi'an's long standby GPS.obd2 gps tracker
Last article:GPS landmarks and routes.GPS Tracker for vehicles wholesale
Next article:GPS navigation software.Hidden GPS Trackers Factory
Related Information
4G GPS Tracker sales
2023-04-23GPS Tracker for vehicles Vendor
2023-03-16Dog gps tracker Processing
2023-04-23gps vehicle tracker price
2023-04-11Pet GPS Tracker manufacture
2023-03-16simple gps tracking Solution
2023-04-234G GPS Tracker wholesale
2023-04-23GPS Tracking Solution
2023-04-11SecumorePlus
2023-03-16gps tracker no monthly fee supplier
2023-03-1610000mAh Magnetic Asset GPS Tracker
2025-04-08G06L
2022-06-216000mAh Magnetic Asset GPS Tracker
2025-03-31G900LS 8 Lines-4G Car GPS Tracker
2025-03-31G900LS-4G Car GPS Tracker
2023-10-06Beidou GPS Navigation System - Future development
2022-10-20Which industries need to use GPS positioner
2023-03-07What should I do if the car GPS positioner does not respond for a long time?realtime gps tracker onl
2023-03-24What are the elements of buying a driving recorder.gps tracker no monthly fee wholesale
2023-05-09The editor of Beidou Tong introduced how to use the driving recorder.realtime gps tracker online who
2023-04-14Five requirements that a good GPS module must meet
2022-11-07GPS navigator component-global positioning system
2023-05-16GPS road signs (Landmark Or Waypoint).gps tracker auto manufacturer
2023-06-10GPS indoor positioning application
2023-02-15What is the difference between Beidou system and GPS?gps tracker no monthly fee manufacture
2023-04-14What are the types of driving recorders?GPS Tracker for vehicles Manufacturing
2023-04-14gps vehicle tracker.Provide a complete set of solutions for the application field of GPS positioning
2023-11-06Advantages of GPS technology
2022-10-22The historical development of GPS in the 20th century
2023-02-10Factors affecting GPS positioning accuracy.gps tracker for trailer Production
2023-05-18