Prediction of Adaptive Array Performance

A direct relationship between the conventional properties of an antenna array and its performance in an adaptive mode is given. Expressions are provided to obtain the output signal-to-interference-plus-noise ratio (SINR) of an adaptive array in terms of its conventional pattern and the locations of the desired signal and jammers. These expressions permit one to evaluate the performance of an adaptive array without an exhaustive search for all possible scenarios and parametric values to ascertain that the required performance levels would be met. In fact, one can predict the jammer locations for which the array will provide its best and worst performance by observing the conventional pattern.