Three-Dimensional Localization of Active Aerial Targets Using a Terrestrial Receiver Site

Document Type : Original Article

Authors

1 Sharif University / Master's student

2 Professor/Sharif University of Technology

Abstract

In this paper, we propose a method to localize an active aerial target (emitter) in three dimensions using the time difference and the frequency difference of the received signal from the target and the reflected signals from two large auxiliary terrestrial targets (pseudo stations) with known positions in a fixed ground-based station. Due to the pseudo and the main stations' terrestrial nature, it is not possible to obtain the altitude of the target in the traditional methods, so that these methods solve the localization problems in two dimensions and do not consider the altitude of the target. In this paper, a method is proposed to achieve the target altitude with acceptable accuracy to address this issue. The capability to give the target altitude and at the same time have low computational complexity makes this method an attractive option to be considered in practical applications. In methods where the variables of location and target velocity in the equations are solved implicitly and interdependently, the volume of calculations to achieve the desired accuracy in the text of the article is 250 times. Of course, this method does not converge for low signal-to-noise ratios.

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References

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History

  • Receive Date: 10 September 2020
  • Revise Date: 19 February 2021
  • Accept Date: 04 March 2021
  • Publish Date: 22 May 2021

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