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In this paper we describe the capability of passive millimeter-wave imaging in obstacle width and clearance measurement for automobile applications. To confirm the capabilities, a passive millimeter-wave imaging (PMMWI) test system has been developed. This test system employs the Dicke configuration, which includes a 150mm diameter antenna, a PIN switch, a reference terminator, a 50dB RF amplifier, a 76-77GHz BPF, a W-band detector, a lock-in-amplifier, an elevation and azimuth scanning stage, and a PC for scan control and data acquisition. A van and sedans are utilized as targets. The vehicle width and the clearance between two vehicles measured from PMMWIs show fairly good agreement with real values. Therefore, the capability of PMMWI in width and clearance measurement is confirmed. In addition, the experimentally obtained PMMWIs of vehicles represent the vehicle shapes. This result indicates that obstacle distinction is possible by PMMWI.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yutaka Aoki, Yasuyuki Miyake, and Koichi Hoshino "Passive millimeter-wave imaging system for automobile applications", Proc. SPIE 5989, Technologies for Optical Countermeasures II; Femtosecond Phenomena II; and Passive Millimetre-Wave and Terahertz Imaging II, 598914 (4 November 2005);

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