Inverse synthetic aperture LADAR for geosynchronous space objects - signal-to-noise analysis

Details Inverse synthetic aperture LADAR for geosynchronous space objects - signal-to-noise analysis Inverse synthetic aperture LADAR for geosynchronous space objects - signal-to-noise analysis

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011amos.confe..38p&link_type=abstract

Proceedings of the Advanced Maui Optical and Space Surveillance Technologies Conference, held in Wailea, Maui, Hawaii, September

Physics

Scientific paper

Inverse synthetic aperture LADAR (ISAL) provides high resolution images which are not limited in resolution by the diffraction limit of the telescope collecting the imaging data. This makes it an ideal method for imaging Geosynchronous Earth Orbit (GEO) space objects. Although LADAR is a well researched topic, little has been published on the suitability of ISAL for imaging GEO space objects and the associated SNR models. This paper derives an expression for the return signal detected by a coherent ISAL system. Using tomographic techniques common to synthetic aperture radar (SAR), a model is developed for the signal-to-noise ratio of the reconstructed image. Noise sources considered include photon noise and laser speckle noise.

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