Study On Array Measuring & Calibration For Long Base Line Array

The Long Base Line Acoustic Positioning and Navigation System has been used to provide the precise positioning and navigation for the underwater targets by acoustic positioning techniques, based on the range measurements, determines the position of the target relative to an array of transponders, works out the target's space coordinate, consequently realizes the positioning and navigation.Under the background of Long Base Line Positioning and Navigation System, the main task of the dissertation includes study on array measuring and calibration, automatic array measuring software design, the design of optimized ship course.The research on array measuring and calibration contains some sides, firstly the analysis of positioning theory, the establishment of positioning model, secondly discussed some kinds errors such as timing error, GPS navigation error, the sound velocity measuring error, lastly discussion the array measuring theory, divide the array measuring into absolutely array measuring and relatively array measuring.Automatic array measuring is the prominent characteristic of the multi-function transponder. The object of automatic array measuring software is design the software which use the shortest time and shortest ship course for completing array measuring and calibration. The automatic array measuring software includes five modules, the initial module, the design of array module, the data analysis module, the expert system module, the communication module, the display module. In the communication module, the kernel is the design of relatively array measuring command module, because in the module first use the path planning algorithms.The software validated by cistern and lake trial, the software works reliable and steadily, it has high-positioning ability and precision.