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<p>We present the results of development and experimental validation of a method for detecting and estimating the trajectory of objects moving in the Earth’s atmosphere. The method is based on measurements of scattered radiation from non-cooperative broadcast stations using a multichannel wide-aperture HF radio direction finder and the use of a simple simulation model for the propagation of ionospheric waves of various modes. The algorithm for estimation of scattered radiation characteristics is based on combining correlated signals in frequency and spatial domains and applying the MUSIC method. The possibility of detecting and tracing objects at a distance of about 380 km has been experimentally confirmed. The results of determining the distance to the object were verified using a triangulation method with a second radio direction finder.</p>

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Solution to the Problem of Passive Coherent Radar Based on the Results of Measurements by a Single-Position HF Radio Direction Finder

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • V. Yu. Nesterov,
  • G. G. Vertogradov

摘要

We present the results of development and experimental validation of a method for detecting and estimating the trajectory of objects moving in the Earth’s atmosphere. The method is based on measurements of scattered radiation from non-cooperative broadcast stations using a multichannel wide-aperture HF radio direction finder and the use of a simple simulation model for the propagation of ionospheric waves of various modes. The algorithm for estimation of scattered radiation characteristics is based on combining correlated signals in frequency and spatial domains and applying the MUSIC method. The possibility of detecting and tracing objects at a distance of about 380 km has been experimentally confirmed. The results of determining the distance to the object were verified using a triangulation method with a second radio direction finder.