Title :
Performance Analysis of Spread Spectrum Through Wall Radar
Author :
Xuehui Zhang ; Xiaoli Xi ; Zhongguo Song ; Supin Wang ; Mingxi Wan ; Daocheng Wu
Author_Institution :
Xi´an Jiaotong Univ., Xi´an, China
Abstract :
The performance of spread spectrum through-wall radar (SS-TWR) is analyzed and compared with conventional pulse through-wall radar (PTWR). In order to simulate the real electromagnetic environment, all the echoes are generated via modeling and simulation of the finite-different time-domain method. Results show that SS-TWR has great advantages over PTWR in terms of covertness of transmitting signal, time-of-arrival (TOA) estimation, immunity from interference, as well as engineering implementation. The TOA of target can be estimated accurately in the correlation domain, even when the receiving signals of SS-TWR are added with -3.5 dB noise and sampled by a 4 bit, 1 Gs/s analog-to-digital converter.
Keywords :
analogue-digital conversion; finite difference time-domain analysis; radar interference; radar signal processing; spread spectrum radar; time-of-arrival estimation; SS-TWR; TOA; analog-to-digital converter; correlation domain; finite-different time-domain method; interference immunity; performance analysis; receiving signals; spread spectrum-through-wall radar; time-of-arrival estimation; transmitting signal covertness; Finite difference methods; Signal to noise ratio; Spaceborne radar; Time-domain analysis; Ultra wideband radar; Analog-to-digital converter (ADC); anti-jamming; spread spectrum through-wall radar (SS-TWR); time-of- arrival (TOA);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2330826
