Paper Info
Title
Anti-Sweep Jamming Design and Implementation Using Multi-Channel Harmonic Timing Sequence Detection for Short-Range FMCW Proximity Sensors.
Abstract
Currently, frequency-modulated continuous-wave (FMCW) proximity sensors are widely used. However, they suffer from a serious sweep jamming problem, which significantly reduces the ranging performance. To improve its anti-jamming capability, this paper analyzed the response mechanism of a proximity sensor with the existence of real target echo signals and sweep jamming, respectively. Then, a multi-channel harmonic timing sequence detection method, using the spectrum components' distribution difference between the real echo signals and sweep jamming, is proposed. Moreover, a novel fast Fourier transform (FFT)-based implementation was employed to extract multi-channel harmonic information. Compared with the traditional band-pass filter (BPF) implementation, this novel realization scheme only computes FFT once, in each transmission cycle, which significantly reduced hardware resource consumption and improved the real-time performance of the proximity sensors. The proposed method was implemented and proved to be feasible through the numerical simulations and prototype experiments. The results showed that the proximity sensor utilizing the proposed method had better anti-sweep jamming capability and ranging performance.
Year
DOI
Venue
2017
10.3390/s17092042
SENSORS
Keywords
Field
DocType
FMCW,proximity sensor,anti-sweep jamming,timing sequence detection,ranging
Resource consumption,Proximity sensor,Harmonic,Multi channel,Electronic engineering,Ranging,Fast Fourier transform,Engineering,Jamming
Journal
Volume
Issue
ISSN
17
9.0
1424-8220
Citations 
PageRank 
References 
0
0.34
8
Authors
4
Name
Order
Citations
PageRank
Zhijie Kong100.34
Ping Li27814.22
Xiaopeng Yan333.36
Xinhong Hao412.39