Patent Document ID: 20100060509
Application ID: 12557546
Patent Flag: 0

Claim One:
1. A method for determining wall positions for a building, comprising: (i) providing an array comprising an ultrawideband (UWB) transmitter and a plurality of UWB receivers; (ii) transmitting an UWB signal from said UWB transmitter into a building from a first location, to produce a first set of reflected signals; (iii) receiving said first set of reflected signals into said receivers, wherein each receiver of said plurality of receivers produces an output signal; (iv) stacking said output signal from said each receiver at each said first location to produce a stacked signal equivalent to a plane wave propagating perpendicular to said array; (v) reducing said stacked signal to a single quasi-one-dimensional (Q1D) signal; (vi) analyzing said single Q1D signal in successive time gates to produce stacking data; (vii) peeling said single Q1D signal to produce layer stripping data; (viii) minimizing the mean-square error between a predicted signal and said stacking data and said layer stripping data to produce a first minimized signal; and (ix) repeating steps i-viii at a plurality of locations.