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A Three-Dimensional Target Localization Method for Satellite-Ground Bistatic Radar Based on a Geometry-Motion
Fangrui Zhang1, Hu Xie1, She Shang1
1Xi'an Institute of Space Radio Technology, Xi'an 710100, China.
Sensors (Basel, Switzerland)
|September 19, 2025
Summary
This study introduces a novel method for 3D target localization in satellite-ground bistatic radar systems. The approach effectively determines target altitude and trajectory using bistatic distance and azimuth data.
Area of Science:
- Radar Systems Engineering
- Signal Processing
- Geospatial Analysis
Background:
- Conventional bistatic radar systems face challenges in acquiring target altitude information.
- Accurate three-dimensional (3D) target localization is crucial for various applications.
Purpose of the Study:
- To develop an effective method for 3D target localization in satellite-ground bistatic radar.
- To overcome the limitations of conventional systems in determining target altitude.
Main Methods:
- Utilizing bistatic distance data to construct ellipsoidal constraints.
- Combining azimuth data to define a 3D elliptical line for the target's position.
- Projecting target trajectory and constraints onto a 2D plane under linear motion assumption.
- Establishing an optimization model to determine target trajectory parameters.
Main Results:
- The proposed method successfully determines the target's 3D coordinates.
- Simulation results validate the efficacy and performance of the developed localization technique.
Conclusions:
- The novel approach enhances 3D target localization capabilities in bistatic radar systems.
- The method provides a viable solution for accurate target positioning by integrating distance and azimuth data.
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