Possible extension of bandwidth of L band SAR mounted on small satellites

Author

Maeda, Kumiko

Author_Institution

Univ. of Tokyo, Tokyo, Japan

fYear

2013

fDate

21-26 July 2013

Firstpage

4467

Lastpage

4470

Abstract

The L band spaceborne SAR is very useful to observe deformation of land surface through vegetation and to observe various categories. In order to realize constellation and formation flight, L band SAR needs to be mounted on small satellite in the future. In this case, it is necessary to enhance spatial resolution. Though it is possible to enhance spatial resolution in flight direction by decreasing the size of antenna or spotlight mode, it is impossible to enhance spatial resolution in azimuth direction due to allocated bandwidth of 85MHz (1215-1300MHz). So, in order to increase performance of L band SAR, it is necessary to extend the allocated bandwidth in future WRC. In this paper, impact of out-of-band emission of L band SAR with larger bandwidth (185MHz (1215-1400MHz)) than allocated bandwidth (85MHz(1215-1300MHz) on three EESS (passive) satellites and sharing with seven types of ground radars are presented for the first time as far as the author knows.

Keywords

artificial satellites; geomorphology; remote sensing by radar; spaceborne radar; synthetic aperture radar; vegetation; EESS satellites; L band SAR; azimuth direction; bandwidth 1215 MHz to 1300 MHz; bandwidth 1215 MHz to 1400 MHz; bandwidth extension; constellation; flight direction; formation flight; ground radars; land surface deformation; small satellites; spaceborne SAR; spatial resolution; vegetation; Bandwidth; Interference; Radar antennas; Satellite broadcasting; Satellites; Synthetic aperture radar; L band SAR; extension of bandwidth; small satellite;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International

Conference_Location

Melbourne, VIC

ISSN

2153-6996

Print_ISBN

978-1-4799-1114-1

Type

conf

DOI

10.1109/IGARSS.2013.6723827

Filename

6723827