That would be the one - although it went by other names too... NADC Johnsville, NAWC, etc. It was originally a Brewster Buffalo factory in WW-II - about 5 miles from NAS Willow Grove in Bucks County, PA.
Link
It's primary mission when I was there was ASW Research and Development. But they did many, many other R&D projects there from the very weird if not bizarre, to outstanding cutting edge for the time and ultimately sucessful: TARPS, Deep Difar, TCAS, HUDS, VTAS, etc. Many other successful projects got their start there also, as well as many that are still I believe classified, decades later. Unfortunately, both the center and airfield have now been closed for many years.
For you airline types, it was by the Yardley VORTAC that many had to cross over for arrivals/departures of JFK, LGA, NWK, etc.