Patent ID: 8209146
Filing Date: 2012-06-26
Classification: G01S

Abstract:
1. A computer readable medium storing instructions that, when executed by a data processing device having at least one processor, perform an operation for determining a distance to a target by using a phase shift of a reflected signal relative to a transmitted signal, the operation comprising: generating the transmitted signal to be reflected from the target as the reflected signal, wherein the transmitted signal is modulated by one or more pulses having a modulation frequency; processing a first set of temporal samples of a first electrical signal produced by a first pulse of the transmitted signal temporally overlapping a corresponding second pulse of the reflected signal; processing a second set of temporal samples of a second electrical signal produced by the reflected signal; using the at least one processor to calculate the phase shift using the processed first set of temporal samples and the processed second set of temporal samples; and calculating the distance to the target based on the phase shift.