The best approximation of radar signal amplitude and delay

The estimation ofreceiver signal amplitude and delay, which can be converted to target cross section and range, is one of the fundamental functions of signal processing algorithms in a narrowband radar. The problem of tracking high-earth-orbit (HEO) satellites with ground-based radars requires a generalization of simple filter-bank signal processing architectures traditionally used to estimate signal amplitude and delay. A solution of the mathematical best-approximation problem leads to a new signal processing architecture that efficiently estimates signal amplitude and delay in all of the generality necessary to address the BEO satellite tracking problem.