CROSS-SENSOR PROCESSING FOR A U-SHAPED ARRAY

Cross-sensor processing is examined for a U-shaped array and for a horizontal line array. Attention is given to accounting for crossterms in the cross-sensor field caused by doublet arrivals from the same source. For the arrays considered, the line array did not have sufficient aperture to resolve the doublets. Thus, its response to a doublet was the response to the single wave whose amplitude is the coherent sum of the multi-path arrivals. The U-shaped array did have sufficient vertical aperture to resolve the doublets. A detection list was generated for the U-shaped array that contains accurate level, bearing, and elevation parameters. The detection list for the line array contains more signals; however, the spatial information about the signals is inherently limited to conical angles.