Acquisition Scheme for Impulse Radio UWB TT&C Signal

被引：3
|
作者：
Lian X. [1 ]
Wang Y. [1 ]
Hou X. [1 ]
Meng X. [1 ]
机构：
[1] Equipment Academy, Beijing
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2017年 / 39卷 / 08期
关键词：
Acquisition; Doppler frequency; Impulse radio UWB; Rife algorithm; Tracking; Telemetry; and Command (TT&C);
D O I：
10.11999/JEIT161213
中图分类号：
学科分类号：
摘要：
The impulse radio Ultra-WideBand (UWB) Tracking, Telemetry, and Command (TT&C) system is a new kind of TT&C system that can greatly improve the concealment and anti-interference performance. To solve the acquisition problem of the impulse radio UWB TT&C signal, an acquisition scheme based on Partial Matched Filtering and Fast Fourier Transform (PMF-FFT) is proposed to accomplish the three-dimensional acquisition of pulse phase, pseudorandom code phase and Doppler frequency simultaneously. Then, according to the problem of excessive search space, long acquisition time and low estimation accuracy of Doppler frequency, a new improved acquisition scheme is proposed. It adopts the two-step scheme to accomplish time delay phase acquisition, and uses the modified Rife algorithm to further estimate the Doppler frequency. Simulation results show that this scheme can effectively improve the acquisition speed, reduce the acquisition time, and greatly improve the estimation accuracy of Doppler frequency. © 2017, Science Press. All right reserved.
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页码：2000 / 2006
页数：6
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