A Satellite Data Acquisition System

Abstract

The invention discloses a satellite data acquisition system which comprises a satellite data acquisition load and a ground data acquisition terminal, wherein the satellite data acquisition load comprises a Doppler diversity reception module, a load sending module, an access control module and a jam control module. The satellite data acquisition system disclosed by the invention adopts two user access modes, namely an S-aloha access mode and a subscription access mode, so that the access mode of the system is more flexible; and acquisition of data of a small number of short message features and acquisition of continuous data can be realized. According to the satellite data acquisition system, a jam control mode is also adopted; and Doppler diversity receiving is adopted for high-dynamic signals. The system can realize a high-capacity satellite data acquisition system, also realize jam control under a large number of users and finish data receiving under large dynamic. The invention can be used for satellite data acquisition systems.

Description

technical field

[0001] The invention relates to a satellite data acquisition system. Background technique

[0002] In recent years, with the development of social economy and technology, and the development of the Internet of Things, the demand for data collection has huge demands in terms of scope and timeliness, and there are more and more researches on satellite-based data collection systems. There are already Orbcomm systems, Argos systems, and Aprize systems in the world. There are only a small number of satellite data collection payloads in China, and there is no mature large-capacity satellite data collection system yet. Orbcomm deploys a constellation of low-orbit satellites and builds a global service system, mainly for commercial services. The Orbcomm system is a commercial low-orbit satellite constellation for two-way short data and information transmission, with an orbital height of 825km, a single satellite weight of 43Kg, a diameter of 42 inches, and a height ...

Examples

Embodiment Construction

[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...

technical field

[0001] The invention relates to a satellite data acquisition system. Background technique

[0002] In recent years, with the development of social economy and technology, and the development of the Internet of Things, the demand for data collection has huge demands in terms of scope and timeliness, and there are more and more researches on satellite-based data collection systems. There are already Orbcomm systems, Argos systems, and Aprize systems in the world. There are only a small number of satellite data collection payloads in China, and there is no mature large-capacity satellite data collection system yet. Orbcomm deploys a constellation of low-orbit satellites and builds a global service system, mainly for commercial services. The Orbcomm system is a commercial low-orbit satellite constellation for two-way short data and information transmission, with an orbital height of 825km, a single satellite weight of 43Kg, a diameter of 42 inches, and a height ...

Examples

Embodiment Construction

[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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