Pseudo real time receive signal sampling for ground penetrating radar

摘要

A system and method for pseudo real time collection of receive signal data in a single- or multi-channel ground penetrating radar. Each channel transmits electromagnetic impulses into a medium under test during each of a plurality of runs over the medium. Run receive signals are received in response to the transmitted impulses. Each run receive signal is sampled multiple times at a run sample rate. The sample points of each run are delayed by delay sequences with respect to the sample points of the other runs. The sample points of the individual runs are stored as a composite set of sample points representative of a receive signal sampled at an effective sample rate equal to a multiple of the run sample rate where the multiple is the number of runs.

主权项

1. A method for operating a ground penetrating radar channel, comprising:
generating a trigger signal for each one of a plurality of data collection runs, wherein the trigger signals are configured to trigger the transmission of ground penetrating electromagnetic waves; receiving at an A/D converter a run receive signal in response to each ground penetrating electromagnetic wave; A/D sampling each run receive signal at a sampling rate to produce a run set of sample points, including sampling each run receive signal at a different delay sequence with respect to a beginning of the run receive signal; and storing the run sets of sample points as a composite set of sample points representative of a signal sampled with an effective sampling rate that is greater than the sampling rate at which the run receive signals were sampled.