Conference paper
Correction for quadrature errors
In high bandwidth radar systems it is necessary to use quadrature devices to convert the signal to/from baseband. Practical problems make it difficult to implement a perfect quadrature system. Channel imbalance and quadrature phase errors in the transmitter and the receiver result in error signals, which appear as self-clutter in the radar image.
When digital techniques are used for generation and processing or the radar signal it is possible to reduce these error signals. In the paper the quadrature devices are analyzed, and two different error compensation methods are considered. The practical implementation in the Danish polarimetric SAR system, EMISAR, is presented, and measured results are given.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 1994 |
| Pages: | 909-911 |
| Proceedings: | 1994 International Geoscience and Remote Sensing Symposium |
| Journal subtitle: | Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation |
| ISBN: | 0780314972 and 9780780314979 |
| Types: | Conference paper |
| DOI: | 10.1109/IGARSS.1994.399297 |
Bandwidth Baseband Danish polarimetric SAR system EMISAR Error correction Image converters Radar imaging Radar polarimetry Radar signal processing Signal generators Signal processing Transmitters baseband channel imbalance digital techniques error compensation error compensation methods error signals generation high bandwidth radar systems image representation polarimetry processing quadrature devices quadrature errors quadrature phase errors radar clutter radar equipment radar image radar imaging radar polarimetry radar signal receiver self-clutter synthetic aperture radar transfer functions transmitter
