Method for determining the absolute location of a streamer incorporating a reference signal system where the a priori location of the reference signal source (or alternatively the detector) need not be known

摘要

A method for determining the absolute geophysical location of a streamer using reference signal source(s), or alternately detector(s), of unknown location. The absolute geophysical location of a seismic streamer is determined by the optimal sequential use of the field measurements of reference signal travel time, streamer magnetic heading and conventional navigational measurement. The absolute location determination is accomplished in three steps. Each step solves for one aspect of streamer location by optimally utilizing one of three types of field measurement. This procedure requires no a priori knowledge of the absolute location of the reference signal source(s), or alternately detector(s).