Optimum detection and receiver performance for multistatic radar configurations

The binary detection problem is investigated for a multistatic radar configuration with one transmitter and N separated receivers, A time-discrete mathematical framework is developed to which the likelihood ratio test can be applied. The optimum multistatic receiver structures are elaborated for the Swerling fluctuation models and can be described as follows: Each wave form is fed into a square envelope detector and the outputs are multiplied by a weight factor, depending on the local average signal-to-noise ratio. The computed N quantities are summed up and compared to a threshold. To determine the receiver performance, the detection probability is calculated as a function of the false alarm probability and the local signal-to-noise ratios.