It is difficult to detect and measure slow moving natural objects from a space-borne SAR observation. This paper presents a simple and efficient method to retrieve moving velocity from quad-pol SAR data acquired by dual receive antenna (DRA). The core idea is to exploit the slight observation time difference between different polarizations (H- and V-pol transmitted signals). The difference of scattering centers between different polarizations can be removed by azimuth phase differentiation. It was applied to TerraSAR-X quad-pol SAR over slow drifting sea ice in the Arctic Ocean. The SAR measured velocity was about 1.4 km/hr (or 0.37 m/s) to 2.4 km/hr (or 0.67 m/s). While co-pol data (HH- and VV-pol) are useful to detect slow drifting sea ice because of the strength of returned signals, cross-pol (HV- and VH-pol) data seems more effective to measure the velocity.
|Title of host publication||2015 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||4|
|Publication status||Published - 2015 Nov 10|
|Event||IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Milan, Italy|
Duration: 2015 Jul 26 → 2015 Jul 31
|Name||International Geoscience and Remote Sensing Symposium (IGARSS)|
|Other||IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015|
|Period||15/7/26 → 15/7/31|
Bibliographical notePublisher Copyright:
© 2015 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Earth and Planetary Sciences(all)