Method for determining interference from NGSO satellite earth detection system to deep space detection system

Abstract

A method for determining interference from a NGSO satellite earth detection system to a deep space detection system is disclosed. The method comprises the following steps: pinpointing locus parameters of two time varying systems; unifying a reference system of the two time varying systems; pinpointing satellite system performance parameters of both sides; determining a time arc segment concerned by interference analysis; determining total time of the interference analysis and a sampling frequency; acquiring space position information of each sampling time corresponding to the two time varying systems in the interference time arc segment respectively and acquiring sending and receiving gain at a direction of a interference link and a interference link distance length; calculating a power spectrum density when each sampling time interference signal arrives at a disturbed link receiving system; determining same frequency interference by combining an international interference protection standard. By using the method of the invention, the interference generated by the NGSO satellite earth detection system on the deep space detection system in a corresponding frequency range can be accurately determined. An antijamming capability of the deep space detection system can be increased and a project is easy to be realized.

Description

technical field [0001] The invention relates to a method for determining the interference of NGSO (non-geostationary orbit) satellite earth exploration system using the same frequency to the deep space exploration system, which is applicable to NGSO satellite earth exploration systems, Mars exploration and Venus exploration in meteorology, ocean, resources, environment, etc. Interference determination between other deep space exploration systems. Background technique [0002] According to the requirements of international regulations on the use of radio frequencies, deep space exploration refers to the detection of celestial objects 2 million kilometers away from the earth's surface. Due to its long distance and long signal propagation path, its signal is very weak and extremely sensitive to external interference. At the same time, with the vigorous development of today's satellite earth exploration and near-Earth space exploration and other services, the satellite systems o...

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Problems solved by technology

[0016] Since the launch of deep space exploration systems is still limited to a very small number of relatively developed countries in the aerospace business field, in my country, such business projects as Mars exploration are only in their infancy, and various researches are mainly focused on key technological breakthroughs, system task realization and experimentation. However, the research on co-channel interference from other NGSO satellite systems is very weak, especially in terms of interference determination methods. At present, there is no unified and authoritative method in the world, and it is basically in a blank state

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