科研之友
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摘要
In this paper, we propose a direction finding (DF) receiver for ultra wideband impulse radio (UWB-IR) signal in a realistic multipath environment. The receiver uses an array of antenna, where each antenna is connected to a proposed propagation-delay estimation structure. The advantage of the proposed structure is that it outputs a trapezoidal signal whose amplitude reflects the propagation delay and thus relaxes the sampling rate requirement of the analog-to-digital-converter (ADC). The angle-of-arrival (AOA) is estimated from the vector of propagation delays measured with respect to reference antenna. Because these estimated delays contain outliers, we propose a simple AOA estimation algorithm based on minimum fractional-distance search. Experimental results based on simulation show that the proposed DF receiver achieves better performance compared with the minimum l(1)- and l(2)-based (least-squares based) distance search.
- 出版日期2010-12
- 单位南阳理工学院
