Why are sometimes multiple PS retrieved, which are disposed along a straight line?
Sometimes many PS are disposed close to each other and along a straight line. This happens because the radar signal reflected off the surface in that area is very strong. Due to the signal filtering and sampling, it results not as a unique large feature, but the system represents it as a group of PS, where the PS holding the highest coherence is the real PS and the points at its side will have decreasing coherence and will represent the same repeated information.
