Performance of imaging spectrometer methods for airborne reconnaissance with wide area coverage

Brian A. Gorin

doi:10.1117/12.458853

15 November 2002 Performance of imaging spectrometer methods for airborne reconnaissance with wide area coverage

Brian A. Gorin

Proceedings Volume 4824, Airborne Reconnaissance XXVI; (2002) https://doi.org/10.1117/12.458853
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The performance characteristics of hyperspectral imaging methods for airborne reconnaissance with wide area coverage are compared for Dispersive Grating (DGS) and Fourier Transform Spectrometer (FTS) technologies. The system characteristics of field of regard ground coverage, signal-to-noise ratio, and spatial and spectral resolution are evaluated to include temporal frame time and moving platform parameters within the airborne environments. Additional trade space parameters are included for field operational examples, and real-time hyperspectral image cube processing. The comparison utilizes equivalent requirements for ground coverage rates, ground spatial resolution (GSD),s pectral range, spectral channel width, and airborne platform parameters for both the DGS and FTS approaches. Achievement of equivalent system characteristics drive the implementation and performance trades for scanning (DGS) versus step stare (FTS) field of regard ground coverage, SNR and NESR, and the subsequent trades of output data rate processing for airborne platform flight parameters of altitude, ground speed, and look angles. Comparison of existing system concepts implemented for pan-scanning with DGS and step-stare with FTS reveals fundamental differences between the concepts of operation and subsequent achievement of airborne reconnaissance objectives.

Citation Download Citation

Brian A. Gorin "Performance of imaging spectrometer methods for airborne reconnaissance with wide area coverage", Proc. SPIE 4824, Airborne Reconnaissance XXVI, (15 November 2002); https://doi.org/10.1117/12.458853

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