4.6 Article

Calibration of Wideband LFM Radars Based on Sliding Window Algorithm

期刊

ELECTRONICS
卷 12, 期 17, 页码 -

出版社

MDPI
DOI: 10.3390/electronics12173564

关键词

phased array radar; radar calibration; wideband signal; true time delay; beamforming

向作者/读者索取更多资源

This paper proposes a new calibration method for wideband signal beamforming in radar systems. The method utilizes the concept of the sliding window algorithm for linear frequency modulated (LFM) signals to calibrate the frequency-dependent errors and time delay error in the system. The proposed method is compared with the conventional matched filter-based calibration and verified through simulation results and beampatterns.
This paper addresses the challenges of wideband signal beamforming in radar systems and proposes a new calibration method. Due to operating conditions, the frequency-dependent characteristics of the system can be changed, and the amplitude, phase, and time delay error can be generated. The proposed method is based on the concept of the sliding window algorithm for linear frequency modulated (LFM) signals. To calibrate the frequency-dependent errors from the transceiver and the time delay error from the true time delay elements, the proposed method utilizes the characteristic of the LFM signal. The LFM signal changes its frequency linearly with time, and the frequency domain characteristics of the hardware are presented in time. Therefore, by applying a matched filter to a part of the LFM signal, the frequency-dependent characteristics can be monitored and calibrated. The proposed method is compared with the conventional matched filter-based calibration results and verified by simulation results and beampatterns. Since the proposed method utilizes LFM signal as the calibration tone, the proposed method can be applied to any beamforming systems, not limited to LFM radars.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据