Download or read book Analyzing Spatial Diversity in Distributed Radar Networks written by Rani Daher and published by . This book was released on 2008 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: We introduce the notion of diversity order as a performance measure for distributed radar systems. We define the diversity order of a radar network as the slope of the probability of detection ( PD) versus signal-to-noise ratio (SNR) curve evaluated at PD = 0.5. We prove that the diversity order of both joint detection and optimal binary detection grows as K , K being the number of widely distributed sensors. This result shows that the communication bandwidth between the sensors and the fusion center does not affect the asymptotic growth in diversity order. We also prove that, amongst fixed decision rules, the OR rule leads to the best performance and its corresponding diversity order only grows as (log K). Space-Time Adaptive Processing (STAP) systems depend to a great extend on geometry, and we introduce the notion of a random radar network in order to study the effect of geometry on overall system performance. We first approximate the distribution of the signal-to-interference-plus-noise ratio (SINR) at each sensor by an exponential distribution, and we derive the corresponding moments for a specific system model. We extend this analysis to multistatic systems and prove that each sensor should individually be large enough to cancel the interference so that the system exploits the available spatial diversity.