Name
Title | ||
|---|---|---|
Velocity estimation of moving targets on the sea surface by azimuth differentials of simulated-SAR image |
Abstract | ||
|---|---|---|
Since the change in Doppler centroid according to moving targets brings alteration to the phase in azimuth differential signals, one can measure the velocity of the moving targets using this. In this study, we will investigate theoretically measuring velocity of an object from azimuth differential signals by using range compressed data which is the interim outcome of treatment from the simulated Synthetic Aperture Radar (SAR) Raw data of moving targets considering sea clutter. Also, it will provide evaluation for the elements that affect the estimation error of velocity from a single SAR sensor. In the concrete, by making RADARSAT-1 simulated image, the research includes comparisons for the means of velocity measurement classified by directions of movement as in the four following cases. 1. A case in which the object that becomes the target exists independently, 2. When there is a tidal current of 1 m/s, 3. When there exists moving targets of different velocity on the azimuth, 4. When the target is contiguous to the land where it has high back scatter factor. As a result, when the object, which becomes the target, independently exists on SAR image in the range of 128 pixels, the velocity of object could be measured with high accuracy. However, when there existed other moving targets in the range of 128 pixels or when the target was contiguous to the land of high back scatter factor, the velocity was in error by 10% at the maximum. This is because in the process of assuming the target's location, an error occurred due to the disturbed signals affected by the scatterers. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/IGARSS.2009.5417890 | IGARSS |
Keywords | Field | DocType |
moving targets velocity estimation,synthetic aperture radar,radarsat-1 simulated image,target tracking,remote sensing by radar,doppler centroid,estimation error,simulated-sar image,geophysical image processing,sea clutter,azimuth differential,oceanographic techniques,sea surface,azimuth,clutter | Moving target indication,Synthetic aperture radar,Computer science,Remote sensing,Azimuth,Artificial intelligence,Geodesy,3D radar,Pulse-Doppler radar,Computer vision,Radar imaging,Clutter,Inverse synthetic aperture radar | Conference |
Volume | Issue | ISSN |
3 | 3 | 2153-6996 |
ISBN | Citations | PageRank |
978-1-4244-3395-7 | 0 | 0.34 |
References | Authors | |
1 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chan-Su Yang | 1 | 7 | 3.98 |
| Youn-Seop Kim | 2 | 0 | 0.68 |
| Kazuo Ouchi | 3 | 112 | 15.71 |