The Effects of Nonlinearity in Frequency Sweep on  the Range Precision and Range Resolution of LFMCW Radar

Chen Zhuming; Ding Yiyuan; Xiang Jingcheng

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The Effects of Nonlinearity in Frequency Sweep on the Range Precision and Range Resolution of LFMCW Radar

更新时间：2025-12-08

- The Effects of Nonlinearity in Frequency Sweep on the Range Precision and Range Resolution of LFMCW Radar
- Acta Electronica Sinica Issue 9, Pages: 103-104(1999)
- 作者机构：
  
  电子科技大学电子工程系!成都610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN958.54
- Published：1999
- 稿件说明：
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[1]陈祝明,丁义元,向敬成.扫频非线性对线性调频连续波雷达测距精度和距离分辨力的影响[J].电子学报,1999(09):103-104.

Chen Zhuming, Ding Yiyuan, Xiang Jingcheng. The Effects of Nonlinearity in Frequency Sweep on the Range Precision and Range Resolution of LFMCW Radar[J]. Acta Electronica Sinica, 1999, (9): 103-104.
[1]陈祝明,丁义元,向敬成.扫频非线性对线性调频连续波雷达测距精度和距离分辨力的影响[J].电子学报,1999(09):103-104. DOI：

Chen Zhuming, Ding Yiyuan, Xiang Jingcheng. The Effects of Nonlinearity in Frequency Sweep on the Range Precision and Range Resolution of LFMCW Radar[J]. Acta Electronica Sinica, 1999, (9): 103-104. DOI：

摘要

线性调频连续波（ＬＦＭＣＷ）雷达在理论上具有很高的测距精度和距离分辨力，但实际的ＬＦＭＣＷ雷达由于其固有的扫频非线性而使其实际的测距精度和距离分辨力下降．本文根据ＬＦＭＣＷ雷达回波功率谱的特性，从理论上分析了扫频非线性对ＬＦＭＣＷ雷达测距精度和距离分辨力的影响，为实际ＬＦＭＣＷ雷达扫频非线性的外部校正提供一个精确的理论依据．

Abstract

Linear frequency modulation continuous wave （LFMCW） radar has high theoretical range precision and range resolution

but its practical range precision and range resolution will decrease because of its inherent nonlinearity in frequency sweep.This paper analyses theoretically the effects of the nonlinearity on the range precision and range resolution of LFMCW radar according to its echo power spectrum

and gives accurately theoretical grounds for outside correction of the nonlinearity of LFMCW radar.

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