TY - JOUR
T1 - Weak target detection of passive radar in strong jamming environment
AU - Liu, Zhiqiang
AU - Ma, Hongguang
AU - Yang, Lifeng
PY - 2008/12
Y1 - 2008/12
N2 - It is difficult for a passive radar to detect weak targets under the background of strong jamming coming from large targets, near air fleet or deception jam. Based on the connection between strong and reference signals, the relationship between the amplitude-range-Doppler surface and the ambiguity function of the reference signal was deduced, and a detection method for weak targets was proposed based on two-dimension FIR (finite impulse response) system identification. Simulation results indicate that the proposed method can restrain the strong signal beyond 60 dB, and even to weak targets with an echo SNR (signal to noise ratio) of -24 dB, they can be detected.
AB - It is difficult for a passive radar to detect weak targets under the background of strong jamming coming from large targets, near air fleet or deception jam. Based on the connection between strong and reference signals, the relationship between the amplitude-range-Doppler surface and the ambiguity function of the reference signal was deduced, and a detection method for weak targets was proposed based on two-dimension FIR (finite impulse response) system identification. Simulation results indicate that the proposed method can restrain the strong signal beyond 60 dB, and even to weak targets with an echo SNR (signal to noise ratio) of -24 dB, they can be detected.
KW - Passive radar
KW - Two-dimension FIR (finite impulse response) filter
KW - Weak target detection
UR - http://www.scopus.com/inward/record.url?scp=58149383309&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:58149383309
SN - 0258-2724
VL - 43
SP - 782
EP - 787
JO - Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University
JF - Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University
IS - 6
ER -