Location method of ground radiation source based on spaceborne movable spot beam antenna

Abstract

The invention discloses an antenna ground radiation source positioning method based on satellite borne movable spot beams. The method comprises that (10) according to a directional diagram function of the antenna as well as the relations between antenna gain and the pitch and the azimuth angles, a directional model of the antenna directional diagram is established; (20) global wave beams are used to recognize a signal parameter of a ground radiation source, and movable spot beams are used for scanning to obtain a pre-estimated position of the ground radiation source; (30) according to the pre-estimated position of the ground radiation source, the intensity of radiation signals is measured for multiple times, and space distribution of the intensity of the radiation signals is obtained; (40) according to the directional model of the antenna directional diagram and space distribution of the intensity of the radiation signals, a directional equation set is established, and direction of the position of the radiation source is obtained; and (50) according to the direction of the position of the radiation source, geographic information is combined with ephemeris information to obtain the latitude and longitude of the ground radiation source. The radiation source positioning method is simple and easy, and does not need extra satellite borne equipment.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a method for locating a ground radiation source based on a space-borne movable spot beam antenna with low transmission cost, low resource consumption on the star and high positioning accuracy. Background technique [0002] Due to the unique advantages of the satellite system, such as strong coverage, long transmission distance, no limitation of geographical conditions, and flexible maneuverability, the satellite system has gradually entered the civil and national defense fields, and has developed rapidly in the past few decades. development prospects. However, with the development of satellite communications, satellite antennas have large apertures, high receiving sensitivity, and satellites are located in open spaces. GEO satellite communications systems are more susceptible to intentional or unintentional radio frequency interference from various radiation source...

AI Technical Summary

Problems solved by technology

[0005] In short, the existing satellite radiation source positioning technology has the following problems: the single-satellite radiation source positioning method requires additional spaceborne equipment, resulting in high launch costs and high resource consumption on the satellite, making it difficult to implement

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