[wxsig] Array of X1W-4 sensors to detrime direction and distance ?

[Stanley Reynolds]

Some searching turned up this site : www toasystems com
Some answers but still not sure how practical a simpler solution is, looks like they are using at least 3 sensors separated by several KM. 

I know the US military is using passive sound to locate small arms fire, wonder if sound with it's slower speed would make a range and direction measurement more practical for a local < 50 feet separation array ? Would obviously reduce the detection range vs RF.


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