Industry News

Home > NEWS > Industry News

Company News

Industry News

satellite-satellite tracking technology

source:Industry News release time:2022-07-28 Hits:     Popular:realtime gps tracker online


  

  The essence of satellite-to-satellite tracking (SST) technology is to measure the distance change between two satellites with high resolution. The former category is high-orbit satellites (such as geostationary satellites, GPS satellites, etc.) tracking low-orbit (LEO) satellites or space vehicles, and the latter category is between 2 satellites in roughly the same low-orbit (LEO) orbit. Tracking, the distance between two satellites can be hundreds of kilometers. Both types of SST technologies use LEO satellites as sensors of the earth's gravity field, and use a one-way or two-way microwave ranging system between satellites to measure the relative speed and variation between satellites. Rate. The information reflected by this irregular speed change contains the information of the earth's gravitational field. The lower the satellite orbit is, the more obvious the influence of this velocity change is by the gravitational field, and the higher the resolution of the reflected gravitational field.

  Among these two types of SST technologies, the information obtained by high and low satellite tracking is relatively rich, because:

  High-orbit satellites, especially multiple high-orbit satellites (such as GPS), can obtain the information transmitted by low-orbit satellites in most orbits; (2) The medium-wave, long-wave, and short-wave information of the ground gravity field can be recovered; (3) Unlike low-orbit satellites, high-orbit satellites are less affected by the gravitational field, so the change in velocity between satellites can better reflect the information of the gravitational field, and the orbits of high-orbit satellites are easier to accurately determine.

  The first test of SST technology was carried out in 1975. The high-orbit satellite is the geostationary satellite (GEO) ETS-6, and the low-orbit satellite is NIMBUS-6 and APOLLO-SYYUS. The accuracy was too low (less than 10μm/s), and no satisfactory results were obtained, so NASA abandoned this research; until 1991, the experiment was carried out again using GPS satellites as high-orbit satellites, and LANDSAT was used as low-orbit satellites. , install a GPS receiver on the satellite plane to conduct orbit determination and test the distance between high and low satellites and their variability. The resolution and accuracy are not high, and there are no satisfactory results; the CHAMP, GRACE and GOCE 3 satellites launched by the European Space Agency (ESA) under the auspices of Germany (GFZ) will be dedicated in the next 10 years. Experimentation of SST and Satellite Gravitational Gradient Measurement (SGG) to improve the understanding of Earth's gravitational field.

  IGS sees continued support for low-orbiting satellites (LEO) as an important aspect of its mission and has established a dedicated LEO working group. The LEO working group formulated a work plan and made some recommendations: ① Establish a corresponding standardized ground station network for tracking LEO by IGS to meet the requirements of LEO; ② IGS transmits data from these ground station networks at a rate shorter than 24 hours 3) Establish a corresponding GPS data exchange format for the GPS 1 Hz sampling rate data of the ground station network; 4) Understand the role and significance of investigating IGS precision orbits for GPS data collection on the LEO platform.


Read recommendations:

portable gps tracker

obd2 tracker supplier

G03

Twelve problems commonly used in car GPS positioner.gps tracker für auto webfleet solutions

The reason why it is an important navigation that it is inseparable.realtime gps tracker online Prod

Last article:GPS early warning

Next article:GPS application in ionospheric monitoring

Related Information

gps tracker for bike

2023-03-16

Gps speed limiter

2023-04-11

GPS Tracker Solution

2023-04-11

real-time gps tracking distributors

2023-04-23

gps vehicle tracker

2023-04-11

portable gps tracker Vendor

2023-04-23

4G GPS Tracker for vehicles manufacture

2023-04-23

simple gps tracking Manufacturing

2023-04-23

simple gps tracking

2023-04-11

obd-II port gps tracker

2023-04-23

GF30 Magnet GPS tracker with Voice listen

2022-06-21

GF20-Mini Magnet GPS Tracker

2022-06-21

C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)

2022-06-21

G09L -6 inch Tail light tracker

2022-06-20

G200(L) -Magnet GPS Tracker

2022-06-20

How to realize the function of GPS monitoring system?

2022-08-18

GPS cannot search for satellite signal problems.plug & play Obd gps tracker distributors

2023-04-12

Benefits of GPS locators for cattle/sheep grazing

2023-02-21

What will be affected by the accuracy of LBS positioning.gps tracker no monthly fee manufacturer

2023-03-10

GPS system principle

2023-02-09

gps vehicle tracker.How to activate and use a previously installed GPS car locator in the car

2023-10-13

How to judge the impact of GPS positioner on battery life.real-time gps tracking Manufacturing

2023-04-06

Design of GPS Vehicle Satellite Positioning Simulation System

2022-12-06

The reason why it is an important navigation that it is inseparable.realtime gps tracker online Prod

2023-04-25

GPS network security ideas

2022-08-12

What is the function of gps tracker.mileage tracking webfleet solutions

2023-03-13

Are the mortgage loan cars installed in the car GPS terminal?mileage tracking webfleet solutions

2023-03-14

What will happen if the card of the car GPS positioner is unplugged?realtime gps tracker online manu

2023-03-28

GPS positioning principle

2022-11-26

Where is the GPS positioner generally installed.gps tracker with magnet distributors

2023-04-10