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Signal Processing of the Continuous-Wave Radar for Approach and Retreat of Targets Using I and Q Channels  

Cho, Choon Sik (한국항공대학교 항공전자정보공학부 고주파회로연구실)
Publication Information
Journal of Satellite, Information and Communications / v.12, no.1, 2017 , pp. 34-37 More about this Journal
Abstract
This letter presents the signal processing of a CW radar (Continuous Wave or Doppler radar) sensor which enables the radar to detect the multiple targets' approaching and retreating using both I and Q channels. The proposed algorithm utilizes the phase change of the Quadrature signal, which occurs when targets move back and forth from the radar. The verification is carried out with the board containing a commercially available MMIC chip and an MCU by analyzing the received data from MMIC. Also the proposed algorithm is downloaded to MCU and the approaching and retreating movement is confirmed. The CW frequency is 24.125 GHz and the transmitter output power used is 7.2 dBm. Detectable distance is about 12 m.
Keywords
continuous radar; signal processing; I/Q channels; approach and retreat; targets;
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