A method of designing irregular subarray architectures for partially adaptive processing

A method of dividing a uniform linear array with identical elements into unequally sized subarrays is proposed based on the principle of designing a density tapering array. Noise power at every subarray output is normalized for partially adaptive processing to obtain near-optimum interference suppression performance with low sidelobe level and distortionless mainlobe in the adapted antenna pattern. Unlike regular subarray architectures, irregular subarray architectures may not have a problem with grating lobes. An example of space-time adaptive processing (STAP) for airborne radar systems based on irregular subarrays is given