Title :
Short-range MMW PRC-CW radar utilizing Doppler compensation
Author :
Zhao, Zhao ; Shi, Xiangquan ; Ding, Dazhi
Author_Institution :
Sch. of Electron. Eng. & Optoelectric Technol., Nanjing Univ. of Sci. & Technol., Nanjing
Abstract :
A millimeter wave (MMW) pseudo random code continuous wave (PRC-CW) radar utilizing Doppler compensation is introduced. The novel hybrid transmitted waveform used in this radar combining single frequency pulse with pseudo random binary phase-coded signal is presented which makes consequent target detection through pulse compression independent of Doppler frequency. Doppler frequencies of targets are firstly estimated based on interpolated FFT in the time span of single frequency pulse and the Doppler compensated signal can be constructed. The effect of Doppler mismatch on the correlation detection can be eliminated by processing the compensated signal using conventional pulse compression-FFT, which makes the radar capable of short-range high-speed target detection. The theoretical analysis and simulation result demonstrate the validity of this technique.
Keywords :
CW radar; Doppler radar; binary codes; fast Fourier transforms; interpolation; millimetre wave devices; phase coding; pulse compression; radar detection; random codes; Doppler compensation; FFT interpolation; binary phase-coded signal; consequent target detection; fast Fourier transform; hybrid transmitted waveform; millimeter wave radar; pseudorandom code continuous wave radar; pulse compression; short-range MMW PRC-CW radar; Analytical models; Doppler radar; Frequency estimation; Millimeter wave radar; Millimeter wave technology; Object detection; Pulse compression methods; Radar detection; Radar signal processing; Signal processing;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540699
