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:
Last article:GPS landmarks and routes.GPS Tracker for vehicles wholesale
Next article:GPS navigation software.Hidden GPS Trackers Factory
Related Information
mini gps tracker maker
2023-04-23Best hidden gps trackers
2023-03-16Magnetic gps tracker wholesaler
2023-03-16gps tracker device Factory
2023-04-234G GPS Tracker for vehicles Factory
2023-04-23Gps speed limiter Production
2023-04-234G obd gps trackewr
2023-03-16gps tracker for kids
2023-03-16gps vehicle tracker manufacturer
2023-04-11Dog gps tracker wholesaler
2023-04-23G183 serials -JOBD GPS Tracker
2022-09-06G900LM J16-4G Car GPS Tracker
2025-03-25P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11P02L Smart Walkie-Talkie Tracker
2025-09-19GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07GPS indoor positioning application
2023-02-15Application in emergencies GPS.plug & play Obd gps tracker Production
2023-05-06Is it really good to install a gps tracker?
2022-09-09Introduction and Comparison of GPS PPS Technology and Other Clock Synchronization Technologies
2022-11-11Civil GPS
2022-12-28There are problems that occur on the four hardware of GPS.obd2 gps tracker verizon distributors
2023-04-14How to purchase GPS.gps tracker with magnet distributors
2023-08-25GPS positioning technology
2022-11-24GSM function of GPS.gps tracker no monthly fee Production
2023-08-15Shared bicycles require the installation of Beidou/GPS satellite positioning module.GPS Tracker
2023-09-22Advantages of Automotive Beidou/GPS Positioning Products.4G GPS Tracker for vehicles supplier
2023-09-15Factors related to GPS satellites
2022-09-22The main error and elimination algorithm in GPS positioning
2023-02-10The application and implementation of CAAC BeiDou is divided into three stages.car gps tracker Manuf
2023-06-13How to make the data of the GPS positioner more effective
2023-02-25