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  1. (1. 西安电子科技大学 雷达信号处理重点实验室,陕西 西安 710071; 2. 空军工程大学 电讯工程学院,陕西 西安 710077; 3. 西安电子工程研究所,陕西 西安 710100)

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-04-20 发布日期:2005-04-20

Simulation and analysis of the millimeter wave chirp frequency stepped radar signal with vibration of a helicopter

ZHANG Guan-jie1,3;ZHANG Qun2;ZHANG Tao3;DU Zi-cheng3;ZHANG Shou-hong1


  1. (1. Key Lab. of Radar Signal processing, Xidian Univ., Xi′an 710071, China; 2. Inst. of Telecommunication Engineering, AFEU, Xi′an 710077, China; 3. Xi′an Electronic Engineering Research Institute, Xi′an 710100, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-04-20 Published:2005-04-20

摘要: 建立了直升机的振动数学模型,在此基础上分析了正弦振动对调频步进体制雷达下的合成高分辨距离像的影响.按照“成对回波”理论,说明在一定条件下正弦振动将给合成的高分辨距离像带来“对副像”,并对毫米波调频步进信号雷达系统进行了仿真.提出对前向飞行的水平旋翼的振动进行补偿,可以大幅度提高合成距离像的质量.

关键词: 调频步进信号, 高分辨率, 直升机, 距离像

Abstract: The mathematical mode about the vibration of a helicopter is first constructed. Then the influence of the sine vibration on the high-resolution range profiles is analyzed. It is shown in terms of “the paired-echoes” that “the paired-profiles” of the range-profiles, which result from the sine vibration, will arise under some conditions. The synthetic range-profiles are simulated under the system of the Millimeter Wave Chirp Frequency-Stepped Radar Signal. And it is proposed that much improvement of the range profiles can be achieved by using the vibration compensation of the main rotor of the helicopter in forward flight.

Key words: chirp frequency-stepped signal, high resolution, hlicopter, range-profiles


  • TN957