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| Research on Combined PRF Anti-Eclipse Design Technology for Radar Seeker |
| LYU Ruiheng1， ZHAO Hanxi2， LOU Zhaokai3， PAN Yongheng3， SUN Gonghao1 |
| 1. Shanghai Electro-Mechanical Engineering Institute， Shanghai 201109， China；
2. Shanghai Radio Equipment Research Institute， Shanghai 201109， China；
3. National Key Laboratory of Complex Aeronautical System Simulation， Beijing 100071， China |
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Abstract To address the "echo eclipse" phenomenon in pulse-Doppler radar seekers and mitigate its impact on target detection and tracking performance, this paper investigates the design technique of combined pulse repetition frequency (PRF) for anti-eclipse based on engineering application requirements. A PRF pulse combination design method independent of seeker range measurement information is proposed, and a combined PRF eclipse margin model is established. Based on Cramér-Rao bound theory, the proposed PRF pulse combination method can reduce the lower bound of root-mean-square angle measurement error of pulse-Doppler seekers by 20.24% under typical simulation conditions, thereby improving the angle error detection accuracy and stable tracking performance of seekers. The proposed method exhibits high engineering value.
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Received: 08 December 2025
Published: 04 August 2026
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2026, Vol. 9 
