The Real-Time Disposaling Of The Measuring Data Of The Sea Gravimeter

Currently, the submarines all adopt with the navigation system which takes the inertial navigate as core. With the time going on, the position error of the inertial system becomes more and more big. It's necessary to correct position. Most submarines adopt to receive GPS or source signals to correct the inertial system, which makes the concealment of the submarine lowers consumedly. So no-source navigation system which do not need to shoot and receive outside signals rises gradually, include gravity aided navigation system, magnetic aided navigation system and terrain aided navigation etc. With the gravity aided navigation system for background, the text studies the real-time processing of the sea gravity data.First, the thesis researches the principle, structure and composing of sea gravimeter and analyses the characteristic of the sensor using CHEKAN-AM sea gravimeter as model. Then the characteristics of gravity measuring and the reasons of all kinds of errors are discussed. The methods of eliminating these errors are discussed too. Finally, the data correction methods such as zero shift, time lag, Eotvos and sea length of the sea gravimeter are discussed and emulations of these methods are did too.In consideration of the actual situation of gravity aided navigation and the reasons of all kinds of errors in the processing of measuring, the thesis built up gravimeter simulator, designed a real time data handling system using DSP as core, gave the result the data dealing, verified the possibility of the project.