Synthesis planar array and apertures in passive HF phase array radar

In this paper we discuss analysis and synthesis techniques for planar arrays usage in passive HF target ranging. Three types of elements geometries are assumed and analyzed for the array. First rectangular element geometry is discussed. Then the analysis method is extended to the case of circular array in which the Fourier function is replaced by the Bessel function. As the last geometry, the non-planar array is discussed briefly. Finally the consideration in applying these arrays in HF passive radar is discussed.