Single-satellite interference source positioning method based on satellite-borne multi-wave-beam antenna

Abstract

The invention discloses a single-satellite interference source positioning method based on a satellite-borne multi-wave-beam antenna. The method comprises the following steps that an antenna directional pattern model of each wave beam of the satellite-borne multi-wave-beam antenna is built, the antenna gain is correlated with the geographical position, and an antenna directional pattern geographical model is constructed; a ground station receives satellite transfer signals and carries out real-time monitoring, when the interference is monitored, the main interfered wave beams and adjacent common-frequency wave beams are determined, in addition, the interference signal parameters are cognized, the signal intensity of the interference signals in other adjacent common-frequency wave beams is measured according to the cognizing results, and the space distribution of the interference signal intensity in multi-wave-beam environment is obtained; a positioning equation set formed by the interference source position, the interference signal intensity and the antenna directional pattern gain function is built through combining the space distribution of the interference signal intensity and the antenna directional pattern geographical model, and the interference source positioning result is obtained. When the single-satellite interference source positioning method provided by the invention is adopted, the additional addition of satellite-borne equipment is not needed, the realization is simple, and in addition, the positioning precision is higher.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a single-satellite interference source positioning method based on a satellite-borne multi-beam antenna. Background technique [0002] Since the 1980s, satellite systems have gradually entered the civil and national defense fields, and have developed rapidly in decades. The satellite system has unique advantages such as strong coverage, long transmission distance, not limited by geographical conditions, flexible maneuvering, etc., and has very good development prospects. However, the satellite system is an open system and uses a large number of transparent transponders, so it is vulnerable to various intentional or unintentional radio frequency interference (RFI) from the outside world. With the rapid growth of satellite business in various countries, the orbit and frequency resources are becoming increasingly tight, the electromagnetic environment where satellite...

AI Technical Summary

Problems solved by technology

Samsung time difference positioning has the advantages of relatively small positioning error and relatively fast positioning speed, but it has high requirements for system and data processing, and the technology is relatively complicated

[0008] To sum up, the existing satellite interference source positioning technology mainly has the following problems: it is difficult to locate the interference source based on the multi-satellite positioning system for geosynchronous orbit satellites, and the single-satellite based interference source positioning method requires additional space-borne equipment. Complicated implementation and limited positioning accuracy

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