Journal on Communications ›› 2023, Vol. 44 ›› Issue (6): 117-124.doi: 10.11959/j.issn.1000-436x.2023120

• Papers • Previous Articles     Next Articles

Direct localization algorithm of the aerial target based on external radiation source

Nan XIA, Danyang GAO, Baohui XING, Yaning WANG   

  1. School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China
  • Revised:2023-06-20 Online:2023-06-01 Published:2023-06-01
  • Supported by:
    Industry-University Cooperation Education Project of the Ministry of Education(220603231024713)

Abstract:

In order to improve the accuracy of aerial target location and ensure its concealment, a direct location algo-rithm of the aerial target based on external radiation source was proposed.Fixed broadcast signals were used as transmit-ting sources, and the signals scattered by the aerial targets were received by multiple receivers.A direct relationship be-tween the synchronized multi-dimensional baseband signals and the position coordinates of the target was established, and then the spatial cross-spectrum function and joint matching function were constructed.Through iterative spectral peak search, the positioning results of the aerial target could be optimized, and the impact of direct signals and multipath signals on the ground could be effectively suppressed.Simulation results show that the performance of the proposed al-gorithm is better than that of the traditional two-step localization method and other direct localization methods in the case of low signal-to-noise ratio (SNR), and it can achieve high-precision localization of the three-dimensional mobile target.

Key words: external radiation source, direct location, spatial cross-spectrum function, joint matching function, multipath interference suppression

CLC Number: 

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