Millimeterwave radar for SAR on UAVs with real-time image display

Author

Stanko, Stephan ; Johannes, Winfried ; Sommer, Rainer ; Wahlen, Alfred ; Wilcke, Jörn ; Essen, Helmut ; Kallfass, Ingmar ; Tessmann, Axel

Author_Institution

Fraunhofer-FHR, Wachtberg, Germany

fYear

2011

Firstpage

507

Lastpage

511

Abstract

Modern synthetic aperture radar (SAR) systems giving very high resolution have to be light and small in size to fit in small aircrafts. In this paper we show a newly designed SAR system operating at 94 GHz using a high flexible frequency generation module. This very new concept ensures a very linear signal generation which was formerly known from arbitrary waveform generators. The bandwidth of the system allows measurements up to 3.8 GHz bandwidth. We have flown this SAR-system using a model aircraft as well as a microlight and show real-time processed SAR-images. In addition we tested different kinds of inertial measurement units (IMU) to determine the minimum requirements for optimal SAR measurements.

Keywords

radar imaging; radar resolution; spaceborne radar; synthetic aperture radar; SAR image processing; UAV; aircraft; arbitrary waveform generator; bandwidth 3.8 GHz; frequency 94 GHz; inertial measurement units; linear signal generation; microlight; millimeterwave radar; optimal SAR measurement; real-time image display; synthetic aperture radar system; Bandwidth; Chirp; Radar antennas; Radar imaging; Radar measurements; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Symposium (IRS), 2011 Proceedings International

Conference_Location

Leipzig

Print_ISBN

978-1-4577-0138-2

Type

conf

Filename

6042178