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The USAF is considering a number of radar systems as a method to achieve persistent intelligence, surveillance and reconnaissance (ISR) over the Earth's surface. A comprehensive approach must be taken that identifies feasible radar system parameters, geometry, area coverage and processing approaches that will provide needed moving target indication MTI (both ground and air) performance. From the signal...
Summary form only given. Waveform diversity techniques for radar have gained considerable interest over the past several years. Novel radar waveforms have been proposed to improve detection performance and metric accuracy (i.e., angle estimation performance). This paper explores the potential for using a waveform diversity technique known as Multiple Input, Multiple Output (MIMO) radar to improve...
Space time adaptive processing was introduced to the radar community in the 1970's as a multi-dimensional filtering method to discriminate moving targets from clutter when observed from an air-borne/space-borne multi-channel phased array radar. Numerous variants of this filtering technique have been developed and are often compared to some baseline performance with respect to output signal to interference...
In this paper, a new method for processing wideband radar data is presented. To perform the full degree of freedom wideband processing, 3-D space-time adaptive processing (STAP) needs to be implemented, which involves intense computational burden. One approach in this case is to do subband STAP processing and combine these outputs. In this paper, instead of traditional subband processing, incoming...
The multistatic ambiguity function has recently been used as a tool for analyzing multistatic radar systems. It was demonstrated that the multistatic ambiguity function with proper analytical foundation and corresponding graphic representation can serve as a guideline for developing multistatic radar signal processing rules. In this work we use this newly developed approach to combine optimal selection...
In this paper we describe a methodology of jointly designing waveforms for a semi-cooperative, distributed radar system. Some radars have waveforms which are fixed and cannot adapt. The remainder of the group must optimize their emanations conditioned on the existence of the non-cooperative radars. We term this 'conditional joint optimization.' A special case is termed constrained joint optimization...
Space based radar has long been considered as a solution to the Department of Defense's requirement for persistent surveillance of the earth surface. Ignoring the logistical issues of launching, deploying, and maintaining a large phased array in space, space based radar has the advantage of being remote and has the capability to perform global surveillance in all weather conditions. In this paper...
Space based radar (SBR) has been investigated for decades and has once again made an appearance as a viable method for performing the moving target indication (MTI) mission. Large arrays are needed for this application in order to provide adequate energy on target for detection and to minimize the observed ground clutter Doppler spread. Large phased arrays in space are likely to experience mechanical...
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