Effect of Antenna Noise on Angle-of-Arrival Estimation of Ultrawideband Receivers

被引:4
|
作者
Tan, Adrian Eng-Choon [1 ]
Chia, Michael Yan-Wah [2 ]
Rambabu, Karumudi [1 ]
机构
[1] Univ Alberta, Dept Elect & Comp Engn, Calgary, AB T6G 2V4, Canada
[2] ASTAR, I2R, Singapore 117674, Singapore
关键词
Angle-of-arrival (AOA); antenna arrays; time-difference-of-arrival (TDOA); ultrawideband (UWB);
D O I
10.1109/TEMC.2010.2099122
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents amethod for predicting the angle-of-arrival (AOA) using ultrawideband time-difference-of-arrival technique, when the received signal is corrupted by antenna noise. To predict the accuracy of the AOA, the probability density function of the estimated AOA and the standard deviation (rms error) are derived. Numerical simulations and measurements for AOA, in thermal noise conditions, are carried out for three different SNRs. The rms error of the measured and simulated AOAs is then compared with the theoretical standard deviation. The measurements are done with two ridged-horn antennas placed on a turn-table and the received signals are recorded (50 times) at intervals of 1 degrees between -20 degrees and +20 degrees. Accuracy of the proposed AOA estimation model is validated by simulations and measurements.
引用
收藏
页码:11 / 17
页数:7
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