Performance analysis of UWB impulse radar receiver using parallel IPCP

Electronics and Communications in Japan (Part III: Fundamental Electronic Science) Pub Date : 2007-03-28 DOI:10.1002/ecjc.20303

Hiroyuki Hatano, Takaya Yamazato, Hiraku Okada, Masaaki Katayama

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引用次数: 4

Abstract

This paper considers a vehicle-borne target detection system for short range in which an UWB (Ultra Wideband) impulse radar is used. The UWB impulse radar uses a pulse with widths of less than nanosecond order. Therefore, many multipath returns are observed on the receiving side. An IPCP (Inter-Period Correction Processing) receiver that resolves complexity of the receiver caused by multiple paths has been proposed. However, the integration time of the correlator in the IPCP receiver is limited by the period of the transmission signal (code length) and affects the range measurement accuracy. This paper considers vehicle mounting for applications. In order to assure safety, a receiver is constructed with several IPCP receivers in parallel, so that the range measurement accuracy is improved. In addition, a receiver which reduces the complexity of threshold setting in the conventional IPCP receiver when several targets are detected is proposed. The outputs of these receivers are derived analytically and improvement of the range measurement accuracy is confirmed. Further, based on the analytical results, the output of each receiver is characterized and the relationship of the threshold, detection probability, and false error probability is derived. Finally, the characteristics of use of the receiver as a vehicle-mounted radar are evaluated by simulation. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 3, 90(7): 1–14, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjc.20303

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基于并行IPCP的超宽带脉冲雷达接收机性能分析

本文研究了一种采用超宽带脉冲雷达的近距离车载目标检测系统。UWB脉冲雷达使用宽度小于纳秒级的脉冲。因此，在接收侧观察到许多多径返回。已经提出了一种IPCP（周期间校正处理）接收器，其解决了由多个路径引起的接收器的复杂性。然而，IPCP接收机中相关器的积分时间受到传输信号的周期（代码长度）的限制，并且影响距离测量精度。本文考虑了车辆安装的应用。为了确保安全，接收器由多个IPCP接收器并联构成，从而提高了测距精度。此外，提出了一种在检测到多个目标时降低传统IPCP接收机中阈值设置复杂性的接收机。分析推导了这些接收机的输出，证实了测距精度的提高。此外，基于分析结果，对每个接收器的输出进行表征，并导出阈值、检测概率和错误概率的关系。最后，通过仿真评估了该接收机作为车载雷达的使用特性。©2007 Wiley Periodicals，股份有限公司Electron Comm Jpn Pt 3，90（7）：2007年1月14日；在线发表于Wiley InterScience（www.InterScience.Wiley.com）。DOI 10.1002/ecjc.20303

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Electronics and Communications in Japan (Part III: Fundamental Electronic Science)

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