Patent ID: 7994797
Filing Date: 2011-08-09
Classification: G01S,H04B

Abstract:
1. A coded time domain transmission distance meter circuit comprising: a first transmitter module; said first transmitter module being connected to a cable at a first point; said first transmitter module including a first code generator for generating a testing coded pulse and a first transmitter coupled to said first code generator for sending the testing coded pulse onto the cable; a second receiver module; said second receiver module being connected to the cable at a second point; said second receiver module including a second receiver for receiving the testing coded pulse, a second code generator coupled to said second receiver for generating a receiver response coded pulse and a second transmitter coupled to said second code generator for sending a the receiver response coded pulse to the first transmitter module; and said first transmitter module including a calculate distance function for determining a round-trip elapsed time, subtracting a receiver latency time, and calculating a distance to the second receiver module.