A Comparison of Radiolocation Using DOA Respective TDOA

Despite the prevalence of IR threats facing the US Army’s helicopters today in Iraq and Afghanistan, the Army also needs to start planning for the next generation of RF threats.

Due to the fact that today’s signal scenarios’ complexity is increasing (i.e. shorter signals, lower signal-to-noise ratios (SNR), higher bandwidths and – of course – better encoding and/or encryption) it is getting harder to get to the content of an unknown emission. Thus, for radio reconnaissance experts it is getting more and more of interest to determine the location of the original emitter (target). In the following, two location methods “Direction of Arrival” and “Time Difference of Arrival” will be explained and compared to each other.

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