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Perimeter surveillance using a miniaturized millimetre-wave radar

: Essen, H.; Johannes, W.; Stanko, S.


Salmon, N. A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Millimetre wave and terahertz sensors and technology V : 26 - 27 September 2012, Edinburgh, United Kingdom
Bellingham, WA: SPIE, 2012 (SPIE Proceedings 8544)
ISBN: 978-0-8194-9285-2
Art. 85440K
Conference "Millimetre Wave and Terahertz Sensors and Technology" <5, 2012, Edinburgh>
Fraunhofer FHR ()

An FM-CW radar at 94 GHz has been equipped with antennas with high azimuthal gain and a broad beam in elevation and mounted on a rotating pedestal. The radar covers a range interval of 500 m. A change detection algorithm is used to discriminate invading persons from the background. Tracking of non-stationary target objects is maintained by Kalman filtering. The RCS of detected objects is determined using a pre-calibration against a precision corner reflector at a defined range. The measured RCS is compared with a threshold value to discriminate between dangerous and nondangerous persons. Additional information from a video camera is necessary for a first discrimination between target classes.