source:truck tracking webfleet solutions release time:2022-10-12 Hits: Popular:realtime gps tracker online
The GPS satellite is developed by the Space Division of Rockfield International Corporation. It weighs 774kg and has a service life of seven years. The satellite is honeycomb structure, the main body is cylindrical, diameter is 1.5m. The satellite is equipped with two double-bladed solar directional panels (BLOCK I) on both sides, which are 5.33 meters long and can receive sunlight with an area of 7.2m2. The sun orientation system controls the rotation of the battery panels on both wings, so that the panel surface is always aligned with the sun, provides constant power for the satellite, and charges three sets of 15Ah nickel-cadmium batteries to ensure that the satellite can work normally in the shadow of the earth. A multi-beam directional antenna with 12 elements at the bottom of the star can transmit two L-band (19cm and 24cm waves) signals with an Angle of about 30 degrees. Omnidirectional telemetry remote control antennas are installed on the two sides 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 in order to maintain the satellite at an appropriate altitude and Angle and accurately target the visible surface of the satellite.
According to the working principle of GPS system, the higher the accuracy of the satellite-borne clock, the higher the positioning accuracy. Early test satellites used quartz oscillators developed at Hopkins University with a relative frequency stability of 10? 11 / SEC. The error is 14 meters. After 1974, GPS satellites used rubidium atomic clocks with a relative frequency stability of 10? 12/ SEC, error 8m. In 1977, the cesium atomic clock developed by Mas Frequency and Time Systems was used in the BOKCK II, and the relatively stable frequency reached 10? 13/ s, the error is reduced to 2.9m. In 1981, Hughes developed a relatively stable frequency of 10? The 14/ s hydrogen clock puts the BLOCK IIR satellite off by just 1m.
Read recommendations:
China Beidou Satellite Navigation System.obd11 gps tracker verizon manufacture
Last article:The conversion method of GPS coordinates in unit degrees and seconds
Next article:GPS Plan implementation plan
Related Information
gps tracker with magnet
2023-03-164G GPS Tracker for vehicles distributors
2023-04-234G GPS Tracker Manufacturing
2023-04-23car gps tracker manufacturer
2023-04-23fleet gps trackers Factory
2023-04-23Car gps tracking Production
2023-04-23pet gps tracker cat custom
2023-03-16Dog gps tracker Production
2023-04-23Pet GPS Tracker sales
2023-04-11Cantrack GT06
2023-03-16personal gps tracker Production
2022-09-06GF20-Mini Magnet GPS Tracker
2022-06-21G08L - 4inch Smart Tail Light Tracker
2022-06-20G09L -6 inch Tail light tracker
2022-06-20G200(L) -Magnet GPS Tracker
2022-06-20GPS setting RF front end
2022-11-08China's Beidou GPS system
2022-10-2610 problems with common car GPS positioner.plug & play Obd gps tracker manufacture
2023-03-28How to select a suitable vehicle GPS locator
2023-02-21How to maintain the GPS locator of the car.gps tracker with magnet Manufacturing
2023-03-28Detailed introduction to the function of the car GPS positioner.gps tracker no monthly fee distribut
2023-03-10GPS application in wild animals.gps tracker no monthly fee manufacturer
2023-04-24Application of GPS Positioning Technology in Network Security
2022-11-25What are the built -in cards usually use in the car GPS positioner?gps tracker no monthly fee Manufa
2023-03-28Positioning system classification.Car gps tracking manufacturer
2023-05-26GPS ground control part.pet gps tracker cat supplier
2023-07-13Teach you to find a high -quality GPS positioner manufacturing supplier.fleetmanagement webfleet sol
2023-03-22Compared with the difference between Beidou positioning and GPS positioning.cat gps tracker Manufact
2023-06-08GPS Processor (GPSPU)
2022-09-05The role of GPS satellite.GPS Tracker for vehicles manufacture
2023-04-21