3750152 is referenced by 17 patents and cites 7 patents.

This disclosure is of a pulse-echo signal processor for deriving and displaying bearing angle information by measurement of the phase difference of echo signals received at two spaced points. Bearing angle determination is accomplished by processing signals received at each of the two spaced points through a moving time series DELTIC and correlating the time-compressed outputs with the transmitted signal which is correspondingly time-compressed in a stationary time series DELTIC. The correlation signals thus generated are combined to provide an unthresholded display output, in which the input signal amplitude information is preserved, and a thresholded output to a timer which indicates the desired phase difference measurement.

Title
Pulse-echo phase discriminator using deltic processing
Application Number
05/244,802
Publication Number
3750152
Application Date
April 17, 1972
Publication Date
July 31, 1973
Inventor
Waful Lawrence F
Assignee
General Electric Company
IPC
G01s 09/66
G01S 03/808
G01S 03/00
G01S 13/28
G01S 01/00
G01S 15/00
G01S 15/42
G01S 13/00
G01S 15/10
G01S 01/72
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