Not really. Let's look at what is generally known: 1. We may if we are lucky know the time in transit. 2. We may know the signal strength. Unless you have

Not really. Let's look at what is generally known: 1. We may if we are lucky know the time in transit. 2. We may know the signal strength. Unless you have the same signal being intercepted by multiple (minimum number is 3) satellites, you can't triangulate. From a single satellite, you can probably extrapolate from either of these to some extent the location, however you can't do this with any precision beyond a full circle arc. A good parallel might be earthquake detection and the location of an epicenter. Both these involve tracing a location based on the strength of weakening waves reaching detectors. To locate an epicenter, you need detection of the earthquake by three independent detections. One gives you very little information. Two gives you a line of possibilities. Only with three do you get a chance to determine exactly where the waves originated from. Now if you know signal strength, and you have two detections, you know it is somewhere in a line based on signal strength, but you can trace it to two more precise possibilities if you have time in transit. Based on the information we have it sounds like they must have two satellites picking up on the signal and comparing times in transit.