Conference paper
POLARIS: ESA's airborne ice sounding radar front-end design, performance assessment and first results
Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark1
Department of Electrical Engineering, Technical University of Denmark2
Microwaves and Remote Sensing, National Space Institute, Technical University of Denmark3
National Space Institute, Technical University of Denmark4
This paper addresses the design, implementation and experimental performance assessment of the RF front-end of an airborne P-band ice sounding radar. The ice sounder design comprises commercial-of-the-shelf modules and newly purpose-built components at a centre frequency of 435 MHz with 20% relative bandwidth.
The transmitter uses two amplifiers combined in parallel to generate more than >128 W peak power, with system >60% PAE and 47 dB in-band to out-of-band signal ratio. The four channel receiver features digitally controlled variable gain to achieve more than 100 dB dynamic range, 2.4 dB noise figure, 160 ns receiver recovery time and -46 dBc 3rd order IMD products.
The system comprises also, a digital front-end, a digital signal generator, a microstrip antenna array and a control unit. All the subsystems were integrated, certified and functionally tested, and in May 2008 a successful proof-of-concept campaign was organized in Greenland. The system detected the bedrock under 3 km of ice, and internal layers were mapped up to 1.3 km.
Language: | English |
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Publisher: | IEEE |
Year: | 2009 |
Pages: | 393-396 |
Proceedings: | 2009 IEEE MTT-S International Microwave Symposium |
ISBN: | 1424428033 , 1424428041 , 9781424428038 and 9781424428045 |
ISSN: | 0149645x and 25767216 |
Types: | Conference paper |
DOI: | 10.1109/MWSYM.2009.5165716 |
ORCIDs: | Dall, Jørgen |
Airborne radar Bandwidth ESA airborne ice sounding radar Ice Microstrip antenna arrays Microstrip antennas P-band radar POLARIS Polarization Power amplifiers Radio frequency Signal generators Transmitters airborne radar digital front-end digital signal generator digitally controlled variable gain four channel receiver hydrological equipment hydrological techniques hydrology ice microstrip antenna array microwave power amplifiers microwave switches power dividers radar front-end design radar performance assessment radar receivers radar transmitters remote sensing by radar