Title :
Short-range FMCW X-band radar platform for millimetric displacements measurement
Author :
Anghel, Andreea ; Vasile, G. ; Cacoveanu, Remus ; Ioana, Cornel ; Ciochina, Silviu
Author_Institution :
Telecommun. & Inf. Technol., Univ. Politeh. of Bucharest, Bucharest, Romania
Abstract :
A frequency modulated continuous wave (FMCW) X-band radar platform for millimetric displacements measurement of short-range targets is presented in this paper. The platform´s transceiver is based on a heterodyne architecture because the beat frequency is relatively small for short-range targets and it can be placed in the frequency range influenced by the specific homodyne architecture problems: DC offset, self-mixing and 1/f noise. The platform´s displacement measurement capability was tested on range profiles and SAR images acquired for various targets. The displacements were computed from the interferometric phase. The measurement errors were situated below 0.1 mm for metal bar targets placed at a few meters from the radar.
Keywords :
1/f noise; CW radar; FM radar; displacement measurement; millimetre wave measurement; radar equipment; synthetic aperture radar; transceivers; 1-f noise; DC offset; SAR images; beat frequency; frequency modulated continuous wave X-band radar platform; frequency range; heterodyne architecture; interferometric phase; measurement errors; metal bar targets; millimetric displacement measurement; platform displacement measurement capability; platform transceiver; range profiles; self-mixing; short-range FMCW X-band radar platform; short-range targets; specific homodyne architecture problems; Computer architecture; Displacement measurement; Radar imaging; Radar measurements; Synthetic aperture radar; Transceivers; Frequency Modulated Continuous Wave (FMCW); Interferometry; Synthetic Aperture Radar (SAR);
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6721359
