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FSK避障雷达的APFFT测距及误差补偿
陈准,高瑜翔,黄坤超
0
(成都信息工程大学 通信工程学院,成都610225;2.气象信息与信号处理四川省高校重点实验室,成都610225;中国西南电子技术研究所,成都 610036)
摘要:
由于频移键控(Frequency-Shift Keying,FSK)体制避障雷达在动目标分辨与测量上的明显优势,基于FSK体制避障雷达系统的基本原理和结构,通过Matlab建立了测量系统与信号模型,使用全相位快速傅里叶变换(All-phase Fast Fourier Transformation,APFFT)算法进行了相关测量仿真和测量参数计算。通过对不同条件下的仿真结果分析,得出了测量结果误差产生的原因,并提出了相应的误差补偿方法,大大降低了测量误差,使得相对误差降低至0.1%以下。另外,还对多目标的分辨与测量进行了仿真。
关键词:  避障雷达  频移键控(FSK)  全相位快速傅里叶变换(APFFT)  误差补偿
DOI:
基金项目:
Ranging and error compensation using APFFT algorithm for FSK obstacle avoidance radar systems
CHEN Zhun,GAO Yuxiang,HUANG Kunchao
(1.College of Communication Engineering,Chengdu University of Information Technology,Chengdu 610225,China; 2.Meteorological Information and Signal Processing Key Laboratory of Sichuan Higher Education Institutes,Chengdu 610225,China;Southwest China Institute of Electronic Technology,Chengdu 610036,China)
Abstract:
The frequency-shift keying(FSK) obstacle avoidance radar has obvious advantages in range resolution and measurement for moving target.Based on the principle and structure of FSK obstacle avoidance radar system,the ranging system and signal model are set up by Matlab.The measurement simulation and parameters calculation are performed using all-phase fast Fourier transformation(APFFT) algorithm.Through the analysis of the simulation results under different conditions,the reasons for errors of measurement result are found out,and the corresponding error compensation method is put forward.The measurement error is reduced obviously and the relative error is less than 0.1%.In addition,the simulation for the resolution and measurement of multi-target is also completed.
Key words:  obstacle avoidance radar  frequency-shift keying(FSK)  all-phase fast Fourier transformation(APFFT)  error compensation
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