Title :
Range-Doppler NLMS (RDNLMS) algorithm for cancellation of strong moving targets in passive coherent location (PCL) radar
Author :
Lu Xiaode ; Li Jichuan ; Lin Kuan ; Li Daojing ; Zhang Yi
Author_Institution :
Sci. & Technol. on Microwave Imaging Lab., Beijing, China
Abstract :
The direct path signal, strong multi-path and strong moving target echoes can mask the weak target in passive coherent location (PCL) radar systems. The classical normalized least-mean squares (NLMS) algorithm is widely used in cancelling the direct path and multi-path interferences in PCL radar systems, which cannot suppress the stationary ground clutter and the strong moving target echoes simultaneously. An improved NLMS algorithm, called range-Doppler NLMS (RDNLMS), is proposed for cancelling the interferences with different delays (denoting the range information) and Doppler frequencies in PCL radar systems utilizing the Chinese digital television terrestrial broadcasting (DTTB) transmissions. The validity of the algorithm is verified by the simulative results.
Keywords :
Doppler radar; least mean squares methods; passive radar; radar interference; radar signal processing; Chinese digital television terrestrial broadcasting; DTTB transmissions; Doppler frequencies; PCL radar systems; RDNLMS algorithm; Range Doppler NLMS algorithm; cancellation; direct path interferences; direct path signal; interferences; multipath interferences; normalized least-mean square algorithm; passive coherent location radar; stationary ground clutter; target echoes; Doppler effect; Doppler radar; Passive radar; Signal processing; Signal processing algorithms; Surveillance; PCL radar; masking effect; range-Doppler NLMS; strong moving targets removal;
Conference_Titel :
Radar Conference (Radar), 2014 International
DOI :
10.1109/RADAR.2014.7060444
