# On the Use of Start-Stop Approximation for Spaceborne SAR Imaging

@article{Tsynkov2009OnTU, title={On the Use of Start-Stop Approximation for Spaceborne SAR Imaging}, author={Semyon Tsynkov}, journal={SIAM J. Imaging Sci.}, year={2009}, volume={2}, pages={646-669} }

The start-stop approximation is a standard tool for processing radar data in synthetic aperture imaging. It assumes that the antenna is motionless when a pulse is emitted and the scattered signal received, after which the antenna moves to its next sending/receiving position along the flight track. However, when the antenna is mounted on a satellite, as opposed to an airplane, its relatively high speed raises at least two questions. The first one is whether the image may be affected by the…

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## 19 Citations

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## References

SHOWING 1-10 OF 19 REFERENCES

On SAR Imaging through the Earth's Ionosphere

- PhysicsSIAM J. Imaging Sci.
- 2009

The ionospheric phenomena, both deterministic and random, are shown to affect the azimuthal resolution of a SAR sensor stronger than the range resolution; also, the effect of randomness appears weaker than that of the baseline dispersion.

Imaging moving targets from scattered waves

- Mathematics
- 2008

We develop a linearized imaging theory that combines the spatial, temporal and spectral aspects of scattered waves. We consider the case of fixed sensors and a general distribution of objects, each…

A tomographic formulation of spotlight-mode synthetic aperture radar

- Environmental Science, MathematicsProceedings of the IEEE
- 1983

Spotlight-mode synthetic aperture radar (spotlight-mode SAR) synthesizes high-resolution terrain maps using data gathered from multiple observation angles. This paper shows that spotlight-mode SAR…

A Mathematical Tutorial on Synthetic Aperture Radar

- MathematicsSIAM Rev.
- 2001

The paper shows how a simple antenna model can be used together with a linearized scattering approximation to predict the received signal and the conventional matched-filter processing is explained and analyzed to exhibit the resolution of the SAR system.

Synthetic-aperture imaging through a dispersive layer

- Mathematics
- 2004

This paper develops a method for forming a synthetic-aperture image of a flat surface seen through a homogeneous layer of a material that is dispersive, i.e., its wave speed varies with frequency. We…

Spotlight synthetic aperture radar : signal processing algorithms

- Environmental Science
- 1995

Part 1 Introduction: spotlight SAR SAR modes importance of spotlight SAR early SAR chronology. Part 2 Synthetic aperture radar fundamentals: SAR system overview imaging considerations pulse…

Artificial boundary conditions for the numerical simulation of unsteady acoustic waves

- Mathematics
- 2003

Synthetic Aperture Radar Processing

- Environmental Science, Mathematics
- 1999

FUNDAMENTALS Introduction Historical Background Synthetic Aperture Radar Systems Modes Geometric Resolution Goemetric Distortions Synthetic Aperture Radar Signal Statistics InterferometricSynthetic…