Efficient multi-system self-adaptive capturing and tracking device for satellite receiver

Abstract

The invention discloses an efficient multi-system adaptive capturing and tracking device for a satellite receiver. The device comprises a coarse capturing module, a fine capturing module and a carrier, code and data tracking module; an antenna at the receiving end receives a signal, the signal is subjected to down-conversion and then enters a baseband processing part, and at the moment, the coarsecapturing module is used for executing a coarse capture process S11; the fine capturing module is used for executing a fine capturing process S12; and the carrier, code and data tracking module is used for executing a carrier, code and data tracking process S2 and the like. The device is high in compatibility, the same set of capturing and tracking system is suitable for various communication systems, seamless switching can be achieved among various coexisting communication mechanisms, and the communication real-time performance is higher; the size, the weight and the size are lower, the device is suitable for miniaturized and light satellite-borne application, the capture time is short, the tracking efficiency is high, and the frequency tracking error is small.

Description

technical field [0001] The present invention relates to the technical field of satellite receivers, and more specifically, to a high-efficiency multi-standard adaptive acquisition and tracking device for satellite receivers. Background technique [0002] In the satellite communication system, the carrier acquisition and tracking are the key links to establish communication with the satellite. Only after the carrier acquisition and tracking are completed, can the follow-up processing such as demodulation and decoding of the satellite signal be carried out. In inter-satellite and satellite-to-ground communications, with the high-speed relative motion and ground motion of space satellites, the signal acquisition and tracking at the receiving end become more complicated and difficult. With the development of satellite communication technology, satellite communication tends to adopt multiple communication systems. In the existing technology, when multiple communication systems co...

AI Technical Summary

Problems solved by technology

In inter-satellite and satellite-to-ground communications, with the high-speed relative motion and ground motion of space satellites, the signal acquisition and tracking at the receiving end become more complicated and difficult

With the development of satellite communication technology, satellite communication tends to adopt multiple communication systems. In the existing technology, when multiple communication systems coexist in the receiving equipment, a set of signal acquisition and tracking needs to be independently configured at the receiving end for various communication systems. system, resulting in a large consumption of logic resources at the receiving end, bulky receiving equipment, high power consumption, and is not suitable for space-borne receiving terminals and ground receiving equipment with strictly limited size and power. The existing technology has the following problems:

[0003] 1. Poor compatibility, the same capture and tracking system is only applicable to one communication system;

[0004] 2. When multiple communication mechanisms coexist at the same receiving end, switching between communication systems at the receiving end is complicated, which seriously affects the real-time performance and quality of communication

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