The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1977
Filed:
Jun. 25, 1976
Applicant:
Inventor:
Richard Edwin Watt, San Diego, CA (US);
Assignee:
Cubic Corporation, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
343 177 ;
Abstract
A measurement system wherein a given quantity such as distance, is determined by measuring the phase shift between a transmitted signal and a signal received from a transponder in response to the transmitted signal. The system includes a transmitter, a receiver, a digital phasemeter for measuring the phase shift and for providing a count representative thereof, and a calibration system for making the measurement system insensitive to temperature variation induced change in internal phase shifts present in the transmitter and receiver.