Sparse interferometer array systems can be the cost-effective precision radio-frequency emitter directionfinding
systems needed in military and civilian applications. High precision can be implemented by array
extent, while low cost is supported because the array is sparse. However, in the design process ambiguities
in the high dimensional array manifold space need to be evaluated, which typically can be mathematically
or empirically daunting. Here we describe a method to collapse the high dimensional design space, using
root-mean-squared phase differences for signals received at pairs of elements in the interferometer, to a twodimensional
histogram for ambiguity visualization and evaluation (HAVE). The histogram facilitates design
by presenting and locating interferometer ambiguities.
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