Patent ID: 6368276
Filing Date: 2002-04-09
Classification: A61B,G01S,G10K

Abstract:
A sensing system comprising(a) two arrays of transducers, where an array is shaped and operated to form a semi-collimated beam segment, and said semi-collimated beam segment defines boundaries of a field of view in one dimension, and (b) said two arrays are in approximate orthogonal arrangement to define said field of view in two dimensions and to resolve said field of view in two dimensions, and (c) an array transmits coded signals that radiate through said field of view causing a plurality of coded, semi-collimated, transmit, beam segments to form in transmit regions of said field of view such that said coded signals excite respective said transmit regions, where said transmit regions are at different locations in said field of view, and (d) objects in said transmit regions cause reflected signals, and (e) reflected signals are received and processed to form code channels that respond to signals from respective said transmit regions.