Search International and National Patent Collections

1. (WO2005109034) GENERATING THREE-DIMENSIONAL IMAGES USING IMPULSIVE RADIO FREQUENCY SIGNALS

Pub. No.:    WO/2005/109034    International Application No.:    PCT/US2005/016217
Publication Date: Nov 17, 2005 International Filing Date: May 4, 2005
IPC: G01S 13/00
G01S 13/02
G01S 13/18
G01S 13/87
G01S 13/89
Applicants: RAYTHEON COMPANY
GOODMAN, Vernon, R.
SHIFRIN, David, M.
HOLZHEIMER, Timothy, R.
Inventors: GOODMAN, Vernon, R.
SHIFRIN, David, M.
HOLZHEIMER, Timothy, R.
Title: GENERATING THREE-DIMENSIONAL IMAGES USING IMPULSIVE RADIO FREQUENCY SIGNALS
Abstract:
Generating an image matrix includes accessing a round-trip time matrix for a space having points. The round-trip time matrix describes an estimated round-trip time for a signal to travel from a transmit antenna, to a point, and to a receive antenna. Signals reflected from an object of the space are received at the receive antennas. The following are repeated for at least a subset of the points to generate an image matrix: select a point of the subset of points; for each receive antenna, establish a waveform of a signal received by a receive antenna and identify a waveform value of the established waveform that corresponds to the selected point according to the round-trip time matrix; and combine the waveform values for the selected point to yield an image value for the selected point. The image matrix is generated from the image values.