Radar cross section measurements using terahertz waves

Krzysztof Iwaszczuk, Henning Heiselberg, Peter Uhd Jepsen

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Abstract

Radar cross sections at terahertz frequencies are measured on scale models of aircrafts. A time domain broadband THz system generates freely propagating THz pulses measured with sub-picosecond time resolution. The THz radiation is generated using fs laser pulses by optical rectification in a lithium niobate crystal with application of the tilted wave front method, resulting in high electric field THz pulses with a broad band spectrum from 100 GHz up to 4 THz. The corresponding wave lengths are two orders of magnitude smaller than normal radars and we therefore use scale models of size 5-10 cm in order to measure realistic radar cross sections. RCS polar and azimuthal angle plots of F-16 and F-35 are presented.
Original languageEnglish
Title of host publicationproceedings SET-159
PublisherNATO
Publication date2010
Publication statusPublished - 2010
EventSensors & Electronics Technology Panel Specialists’ Meeting : Terahertz and other electromagnetic wave techniques for defence and security - Vilnius, Lithuania
Duration: 1 Jan 2010 → …
Conference number: 159

Conference

ConferenceSensors & Electronics Technology Panel Specialists’ Meeting : Terahertz and other electromagnetic wave techniques for defence and security
Number159
CityVilnius, Lithuania
Period01/01/2010 → …

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