Detection Performance Analysis of Distributed OSCA CFAR with Nonconherent Integration

A novel distributed detector, called order statistic cell-averaging (OSCA) detector, are proposed in the case of noncoherent integration, In this detector, each sensor transmits its test cell sample and a designated order statistic (OS) of its reference observations surrounding test cell to the fusion center. At the fusion center, the global noise power level is obtained with cell-averaging (CA) processing. Under the assumption of chi-square family target model and exponential clutter for independent square-law detector, the exact formulas of probability of false alarm (P_fa) and probability of detection (P_d), are derived. Finally, the corresponding detection performance is calculated with numerical analysis