CPC G01S 3/48 (2013.01) [G01S 3/023 (2013.01); H01Q 3/267 (2013.01)] | 9 Claims |
1. A system comprising:
a platform;
at least one antenna array including a plurality of antennas therein;
a receiver;
at least one processor capable of executing logical functions in communication with the receiver and the at least one antenna array; and
at least one non-transitory computer readable storage medium having instructions encoded thereon that, when executed by the processor, implements operations to determine the direction of origin for an incoming signal, the instructions including:
detect an incoming signal;
collect signal data from the incoming signal;
analyze the collected data using one of a Phase Only Real Correlation Interferometry Direction Finding (POR-CIDF) process and a Real Correlation Interferometry Direction Finding (R-CIDF) process;
wherein the POR-CIDF process comprises calculating a real part of a correlation coefficient according to
or its mathematical equivalent, where
φmeas,n=Measured phase for the nth element (in degrees with a range from −179.9° to 180.0°)
φcal,n=Calibration phase for the nth element (in degrees with a range from −179.9° to 180.0°)
and wherein the R-CIDF process comprises calculating a real part of a correlation coefficient according to
or its mathematical equivalent, where
and
generate a direction finding result representing the direction of origin for the incoming signal.
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