source:Industry News release time:2022-08-02 Hits: Popular:realtime gps tracker online
????
????In the GPS application, the orbit error mainly affects the positioning accuracy in the early stage, and the early GPS baseline is relatively short and the height difference is not large, so the research on the troposphere has not been paid much attention. Until recently, the tropospheric refraction has become an important obstacle limiting the improvement of GPS positioning accuracy due to the greatly improved GPS orbit accuracy. Assuming an area with basically zero elevation, if the GPS signal received by the receiver is transmitted from the zenith direction, the delay can reach the order of 2.2-2.6m, and the delay change within 2 hours can reach 2.2-2.6m. 10cm is not uncommon (so the tropospheric parameters provided by the IGS Analysis Center are used at 2-hour intervals). Also because of this fact, the tropospheric refraction is modeled taking into account the variation of its stochastic process.
????In the application of GPS to troposphere research, the fast orbit and forecast orbit information of IGS will play an important role in weather forecasting. In addition, the 2-hour tropospheric zenith delay series provided by IGS through the "IGS Tropospheric Comparison and Coordination Center" at the GFZ in Germany is like a control point, which can be used as a tropospheric delay absolute for regional or local tropospheric studies. value calibration.
????Different from ground-based GPS atmospheric monitoring, satellite-based or space-based GPS occultation methods have the advantages of wide coverage, good vertical resolution, and fast data acquisition. The principle of this technology is to put the GPS receiver on the platform of a certain low-orbit satellite (LEO) or aircraft. GPS occultation technology acts as an atmospheric detector. The GPS/MET research project carried out in 1997 confirmed that this idea is feasible. The CHAMP satellite, scheduled for launch in April 2000, will use GPS occultation to measure global tropospheric refraction (including atmospheric precipitable fraction).
????In the next few years, there will also be SAC-C in Argentina and COS-MIC in Taiwan, my country. These LEO satellites will use on-board GPS to determine the orbit and use the occultation method to measure the atmosphere.
????In the future, using the meteorological and electron concentration cross-section values of the satellite-borne GPS, combined with the data of the ground GPS station, a layered image will be made for use. In the next three years, the GPS/MET project research will be carried out 6 times, and it is expected that it will make a great contribution in weather forecasting, space weather forecasting and meteorological monitoring.
Read recommendations:
VSL100 GPS Speed Limiter, Speed Governor
GPS military application.plug & play Obd gps tracker distributors
Last article锛?GPS application in ionospheric monitoring
Next article锛?Application of GPS as Satellite Altimeter
Related Information
gps tracker with magnet
2023-04-11gps vehicle tracker maker
2023-04-23real-time gps tracking
2023-03-16Dog gps tracker sales
2023-04-23fleet gps tracking Solution
2023-04-23Gps speed limiter manufacturer
2023-04-23gps vehicle tracker Vendor
2023-04-11gps vehicle tracker Manufacturing
2023-04-23fleet gps tracking manufacture
2023-04-23Dog gps tracker
2023-04-23G200(L) -Magnet GPS Tracker
2022-06-20TK08A Motorcycle GPS Tracker
2022-06-204G Wired GPS Tracker PCBA
2022-06-17VSL100 GPS Speed Limiter, Speed Governor
2022-06-19TK100B- Accurate Pro version GT06/TK100
2023-10-06The theory of relativity provides the basis for GPS
2022-09-23To choose a good gps tracker, the platform matters!
2022-09-15How to choose high-quality GPS positioning products?fleet tracking mobile app
2023-03-23Introduce the different types of the positioner
2023-03-07How does GPS develop
2022-12-13GPS map upgrade
2022-09-26Compared with traditional batteries, what are the advantages of 26650 lithium batteries?
2022-10-18The GPS positioner on the electric car is installed to allow the city's traffic safety and intellige
2023-03-11What is the best GPS tracker to choose?
2022-09-09GPS test set
2022-11-09How will a drone without a GPS tracker orient and return to its base?
2022-09-13What should I do if I encounter an offline alarm in the car GPS positioner?realtime tracking device
2023-03-24GPS navigation solution
2022-12-10Installation method for automotive GPS locator equipment
2023-09-13Main Errors and Elimination Algorithms in GPS Positioning
2022-09-06