Frequency spectrum detection system positioning method based on ATDOA algorithm

Abstract

The invention discloses a frequency spectrum detection system positioning method based on an ATDOA algorithm, and the method comprises the steps: at least six base stations are deployed in a three-dimensional space to carry out the positioning monitoring of a radiation source, the coordinates of the radiation source are obtained, the positions of the base stations is fixed and known, and clocks are allowed to be asynchronous among the base stations; the radiation source sends sound pulses at a fixed frequency, can be measured by a monitoring station and moves within a monitoring range at a relatively high speed. The problem of clock synchronization is solved for a monitoring system applying a TDOA algorithm for positioning. An ATDOA algorithm is applied to frequency spectrum monitoring, and the ATDOA algorithm comprises the steps of identifying the frequency of signals sent by a radiation source, obtaining the time difference of the signals sent by the radiation source received by a plurality of observation stations twice, distributing tasks of the observation stations and a central station in the process, and solving obtained data information through a genetic algorithm. Therefore, strict clock synchronization required by the TDOA method is avoided, the positioning precision of the system is effectively improved, and the positioning power consumption is reduced.

Description

technical field [0001] The invention relates to the field of positioning of a spectrum monitoring system, in particular, the ATDOA algorithm is used for positioning of the spectrum monitoring system. Background technique [0002] In recent years, radio stations have grown rapidly, including both legal and illegal establishments. The proliferation of some illegally installed stations, including black radio stations, pseudo base stations, privately installed vehicle radio stations, and satellite jammers, has seriously disturbed the electromagnetic environment in the air, interfered with the development of radio communications, radio and television services, and even directly threatened the flight of aircraft. , train operation safety; on the other hand, it has brought serious threats to national security and social stability. Some black radio stations broadcast radio and television programs at will, and some pseudo base stations randomly push false advertisements and fraudulen...

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Problems solved by technology

[0012] Aiming at the problems that the existing spectrum monitoring and positioning methods are difficult to meet the needs of actual radio spectrum monitoring, and the positioning system has high complexity and high energy consumption, this paper considers the actual engineering application and reduces the system complexity and energy consumption. A Positioning Method for Spectrum Monitoring System Based on Asynchronous Time Difference of Arrival (ATDOA) Algorithm

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