Correlation of signals against a static mask is freauently used in signal processing. Many times it is useful to be able to rapidly change the mask. The programmable Excisor detector array can provide this capability when used as a combination mask and detector in an optical space integrating correlator. Such a correlator is described and experimental results are presented.
ImSynTM is an image synthesis technology, developed and patented by Essex Corporation.TM can provide compact, low cost, and low power solutions to some of the most difficult image synthesis problems existing today. The inherent simplicity of ImSyn enables the manufacture of low cost and reliable photonic systems for imaging applications ranging from airborne reconnaissance to doctors office ultrasound.The initial application of ImSyn technology has been to SAR processing2'3; however, it has a wide range of applications such as:. Image Correlation . Image Compression overlapped in time sequence (chirped), or transmiued all at the same time (an impulse). In any case, by Fourier transforming the return, it can be decomposed into individual frequencies and each frequency component can then be processed using ImSyn.
Essex has developed a prototype hybrid optical/digital processor for range-Doppler image formation using wideband arbitrary waveforms. The processor is called the Advanced Optical Processor (AOP) and is a hybrid acousto-optic/digital processor that generates high dynamic range, range-Doppler images from wideband radar returns in real time. The AOP was first tested at a U.S. Government facility in November 2005. The AOP is currently scheduled to be tested with a range radar in April 2006. The laboratory testing included three waveform types and verification of all the necessary trigger control signals.The range radar testing will include collection and processing of the same three waveform signals to demonstrate arbitrary waveform capability.The AOP supports high resolution processing necessary for target discrimination and kill assessment by enabling the use of true arbitrary wideband waveforms. The selected architecture combines the advantages of both optical signal processing for the front-end receiver and high-speed digital signal processing for the real-time processing. Its size is a 6U form-factor and fits within the 6U electronic chassis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.