Title :
Analysis of passive targets detection using CDMA signal
Author :
Liu, Peiguo ; Liu, Jibin
Author_Institution :
Dept. of Electr. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
The use of a non-cooperative code division multiple access (CDMA) transmitter as the illuminator for a bi-static radar system is investigated. A signal-processing scheme is developed to detect moving targets. This scheme uses the Doppler shift of targets echoes to estimate the targets´ speed and time delay. The system contains two separate but collocated receivers where Doppler and cross-correlation processing is applied to the direct path and target signal path. We implement the cross-correlation processing using fast Fourier transform (FFT) instead of direct integration.
Keywords :
cellular radio; code division multiple access; correlation methods; fast Fourier transforms; passive radar; radar detection; radar signal processing; radar tracking; target tracking; CDMA cellular base transmitter; CDMA signal; Doppler shift; FFT; bistatic radar system; collocated receivers; cross-correlation processing; fast Fourier transform; noncooperative code division multiple access; passive targets detection; signal-processing scheme; speed estimation; target signal path; time delay; transmitter; Delay effects; Delay estimation; Doppler radar; Doppler shift; Multiaccess communication; Object detection; Radar detection; Signal analysis; Signal detection; Transmitters;
Conference_Titel :
VLSI Design and Video Technology, 2005. Proceedings of 2005 IEEE International Workshop on
Print_ISBN :
0-7803-9005-9
DOI :
10.1109/IWVDVT.2005.1504636
