Research of phase integer ambiguity search optimal algorithm and short baseline GPS heading system

The method for orientation determination of short baseline based on GPS carrier phase is introduced,and the precision estimation of azimuth is ayart,then several shortline s azimuth are computed to make a comparing with astronomical azimuth,and a precision ±(1″~2″) with the length between 400-700 m is obtained.

The principle, structure and performance measurements of the DSQ short based water tube tiltmeter which is characterized by domestics, miniaturization, digitalization and intellectua lization is reported briefly, and results of experiment, monitoring record and accuracy estimation of the instrument on 8 short baselines of 7 stations are intruduced in this paper.

Based on short base line DF principle, the simulation test for short base line time difference DF system is discussed.

This method can carry on the distance measuring examination in the short base or the short distance.

So it is necessary to solve such a problem that how to satisfy the high precision demand to the short base by using pre.

Based on the passive localization theory of ultra-short baseline for acoustic detection and localization,a practical non-typical array with four elements was proposed.

Hardware Design of Long Range Ultra Short Baseline Locating System Transceiver;

The ultra short baseline transducers are not installed in a vessel reference point.

Ultra Short Baseline (USBL) Position System is an under water acoustic Position system, which realize Position, track and data communication to several under water cooperative targets.

The long-short baselines and information of amplitude are employed to establish a method of setting stiding coarse phase according to the threshold of amplitude difference.