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High-precision synchronization detection method for bistatic radar.

Baoqiang Du1, Dazheng Feng2, Xiyan Sun3

  • 1School of Electronic Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China.

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Summary

A new method enhances bistatic radar accuracy using different-frequency phase processing for precise time synchronization. This improves radar ranging and positioning, even in complex environments.

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Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Radar Systems

Background:

  • Accurate radar ranging and positioning are crucial for various applications.
  • Complex backgrounds often degrade the performance of traditional radar systems.
  • High-precision time synchronization is essential for bistatic radar operations.

Purpose of the Study:

  • To propose a novel high-precision synchronization detection method for bistatic radar.
  • To improve the accuracy of radar ranging and positioning under complex backgrounds.
  • To achieve precise time synchronization between transmit and receive signals.

Main Methods:

  • Utilizing different-frequency phase processing for synchronization.
  • Employing frequency conversion to radio frequency pulses.
  • Implementing field-programmable gate arrays (FPGAs) and direct digital synthesizer (DDS) frequency synthesizers.
  • Performing different-frequency phase detection for signal synchronization.
  • Counting processed signals to achieve time synchronization.

Main Results:

  • Achieved a time synchronization precision of 1.5 picoseconds (ps).
  • Demonstrated a frequency stability of 6.2 × 10^-13 per second (/s).
  • Experimental validation confirmed the method's effectiveness.

Conclusions:

  • The proposed method significantly enhances bistatic radar synchronization accuracy.
  • It offers advantages such as fast time response, noise suppression, and high measurement precision.
  • The method ensures strong system reliability for radar applications.