[Milsurplus] more on DIFAR ASW system on P3

[Brian Harrison]

Guys,

Comments from my brother who spent ~ 10 years active as P3 Navigator

best,
brian
kn4r

> I concur with what Bill said for the most part. The AQA-7 operators, SS1 and SS2, didn't provide circles. They would provide frequency of the signal, its signal strength, time of detection and loss of signal. Based on the signal strengths, the TACCO could draw circles around the buoys on his display to help localize the target. The greater the signal strength, the smaller the circle. Where the circles intersected, if they did, could provide possible target locations. That was only useful if the signal was direct path (nearby the buoy), but not if the signal was actually from a convergence Zone (CZ) (much farther away). The TACCO would use tactics to determine between the two. The tactics would include more Lofar buoys and/or some Difar buoys.
> 
> Interesting discussion. Brings back memories.