High Efficiency Multi-standard Adaptive Acquisition and Tracking Method for Satellite Receiver

Abstract

The invention discloses a high-efficiency multi-mode self-adaptive capture and tracking method for a satellite receiver. The antenna at the receiving end receives a signal, down-converts the signal, enters the baseband part, and then executes the following steps: S1, capture, in the The steps include coarse capture S11 and fine capture S12 steps; S2, tracking of carriers, codes and data; the present invention has strong compatibility, and the same capture and tracking system is applicable to multiple communication systems, and can seamlessly coexist between multiple communication mechanisms. Slot switching, better real-time communication; and smaller size, weight, and volume, suitable for miniaturized and lightweight spaceborne applications, with short capture time, high tracking efficiency, and small frequency tracking error.

Description

technical field [0001] The invention relates to the technical field of satellite reception, and more specifically, to a high-efficiency multi-standard self-adaptive capture and tracking method for a satellite receiver. 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 coexist ...

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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