EVALUATION AND MEASUREMENT OF THE DOPPLER SPECTRUM IN A REVERBERATION CHAMBER

被引：5
|
作者：
Chen, X. [1 ]
机构：
[1] Chalmers Univ Technol, S-41296 Gothenburg, Sweden
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH M | 2012年 / 26卷
关键词：
Doppler effect - Frequency estimation - Anechoic chambers;
D O I：
10.2528/PIERM12091808
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：
In this paper, the measurement of the Doppler spectrum in a reverberation chamber (RC) is investigated. The estimation performance of the Doppler spectrum in the previous work is reformulated and analyzed. It is found that the previous RC Doppler spectrum evaluation is an inconsistent estimation. An improved method for evaluating the Doppler spectrum is presented, which makes use of the frequency stirring technique to enhance the estimation performance. In addition, the RC loading effect on the Doppler spectrum is investigated in this paper as well. Measurements are performed in a RC, based on which the Doppler spectrum is evaluated. It is shown that the improved method results in a smaller estimation variance and that the Doppler spread decreases with increasing RC loading.
引用
收藏
页码：267 / 277
页数：11
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