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A Tri-Satellite Interference Source Localization Method for Eliminating Mirrored Location.

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  • 1The 54th Research Institute of CETC, Shijiazhuang 050081, China.

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Summary
This summary is machine-generated.

This study introduces a novel method to accurately locate satellite communication interference using time difference of arrival (TDOA) measurements. The technique effectively eliminates ambiguous mirrored locations, improving interference source determination.

Keywords:
cross-ambiguity functioninterference source localizationtri-satellite localization

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Area of Science:

  • Satellite Communications
  • Signal Processing
  • Geodesy

Background:

  • Satellite communication interference is a growing problem.
  • Time Difference of Arrival (TDOA) is a key localization technique.
  • Existing TDOA methods struggle with mirrored location ambiguities.

Purpose of the Study:

  • To develop a robust method for eliminating mirrored locations in TDOA-based interference localization.
  • To enhance the accuracy and reliability of interference source identification.

Main Methods:

  • Utilizing multi-moment TDOA measurements obtained via the cross-ambiguity function (CAF).
  • Establishing a localization equation set based on the World Geodetic System (WGS)-84 earth ellipsoid model.
  • Employing the Newton iteration method for initial localization and single-moment localization for refinement.

Main Results:

  • Successfully eliminated mirrored location ambiguities in TDOA localization.
  • Achieved high-precision interference source localization.
  • Demonstrated robustness against significant measurement errors and initial value deviations.

Conclusions:

  • The proposed multi-moment TDOA method effectively resolves mirrored location ambiguities.
  • This technique provides a reliable and accurate solution for locating satellite communication interference sources.
  • The method shows strong performance even with challenging measurement conditions.