source:truck tracking webfleet solutions release time:2023-09-04 Hits: Popular:realtime gps tracker online
The GPS satellite was developed by the Space Department of Rockefeller International, with a weight of 774kg and a lifespan of 7 years. The satellite adopts a honeycomb structure, with a cylindrical main body and a diameter of 1.5m. The satellite is equipped with two dual leaf solar panels (BLOCK I) on both sides, with a total length of 5.33 meters and a sunlight receiving area of 7.2m2. The solar orientation system controls the rotation of the two wing battery panels to keep the panels aligned with the sun, continuously providing power to the satellite, and charging three sets of 15Ah cadmium nickel batteries to ensure that the satellite can operate normally in the shadow of the Earth. A multi beam directional antenna with 12 units is installed at the bottom of the star, which can transmit signals in two L-bands (19cm and 24cm waves) with an angle of approximately 30 degrees. Omnidirectional telemetry and remote control antennas are installed on both ends of the star for communication with the ground monitoring network. In addition, the satellite is equipped with an attitude control system and an orbit control system to maintain the satellite at an appropriate altitude and angle, accurately aligning with the visible ground of the satellite.
According to the working principle of the GPS system, the higher the accuracy of the onboard clock, the higher its positioning accuracy. Early experimental satellites used a quartz oscillator developed by Hopkins University, with a relative frequency stability of 10? 11/second. The error is 14 meters. After 1974, GPS satellites adopted rubidium atomic clocks with a relative frequency stability of 10? 12/s, error of 8m. In 1977, the BOKCK II model adopted a cesium atomic clock developed by Mars Frequency and Time Systems, and its relatively stable frequency reached 10? 13/second, the error is reduced to 2.9m. In 1981, Hughes developed a relatively stable frequency of 10? The 14/second hydrogen atomic clock results in an error of only 1m for the BLOCK IIR satellite.
Read recommendations:
Last article:Principles of GPS System.Cantrack TK100
Next article:GPS reset did not have a substantial impact on car GPS locators
Related Information
realtime gps tracker online
2023-04-11fleet gps trackers Solution
2023-04-23GPS Trackers company
2023-04-11obd-II port gps tracker
2023-03-16gps tracker app
2023-04-11Magnetic gps tracker sales
2023-04-23mini gps tracker wholesale
2023-04-23realtime gps tracker online
2023-03-16pet gps tracker cat custom
2023-04-23gps tracker auto price
2023-04-11YG119- Hunting Dog GPS tracker
2023-10-07G01 Smallest Personal Old People Mini GPS Tracker for Kids
2022-06-19personal gps tracker Production
2022-09-066000mAh Magnetic Asset GPS Tracker
2025-03-31G900LS-4G Car GPS Tracker
2023-10-06The following aspects mainly affect the performance of GPS antenna
2022-11-12Type of GPS data format and extraction of positioning information
2022-11-24Brief introduction to GPS principle
2022-12-13GPS design idea and scheme
2022-11-18Micro Tracking Locator
2022-09-21GPS Global Positioner.fleet gps tracking wholesaler
2023-05-27What are the elements of buying a driving recorder.gps tracker no monthly fee wholesale
2023-05-09School bus GPS positioning and 3G wireless video monitoring management.Magnetic gps tracker Factory
2023-07-10Why does the GPS positioning accuracy require high requirements
2023-03-07GPS establishes network connection
2022-10-19gps vehicle tracker.Wireless GPS locator
2023-10-20Bluetooth GPS.Gps speed limiter wholesaler
2023-07-05gps vehicle tracker.What should be noted when installing Beidou/GPS positioners on electric vehicles
2023-10-25Gps speed limiter.C/S version client vehicle management and scheduling system
2023-11-11GPS positioning principle
2022-10-14