A Satellite Data Acquisition System
A technology of satellite data and acquisition system, applied in the field of satellite data acquisition system, to achieve the effect of solving signal receiving problems, flexible access methods, and improving spectrum utilization efficiency
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[0016] The system is composed of access control module, congestion control module and Doppler diversity receiving module, the composition diagram is as follows figure 1 shown.
[0017] In the access mode of the present invention, user uplink channels are mainly divided into two types of logical channels, common and dedicated channels, and the system dynamically divides the two types of channels according to the current operating conditions. The user's uplink channel is generally used as a common channel, and the ground data collection terminal uses the S-Aloha method to access the system through competition to occupy channel resources. Due to changes in the environment and other factors, when the ground data collection terminal needs to upload a large amount of data in a short period of time, in order to improve the reliability and timeliness of data transmission, you can apply for a dedicated channel through reservation, and the system will allocate the idle uplink channel as...
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