Study On Magnetic/Spectrum Red Shift Integrated Navigation

Magnetic/spectrum red shift integrated navigation is a kind of brand-new way ofautonomous navigation. People study little of this method of navigation, because it hassome obvious disadvantages. But it still has many advantages, such as high autonomy,low cost, simple modeling, flexible navigation star selection, etc. So in this paper, Apreliminary exploration of magnetic/spectrum red shift integrated navigation is carriedon, including deriving calculating formula, establishing state mode of location, theKalman filter designing and analysis of the Kalman filter simulation result. At last,some superficial views of geomagnetic/spectrum red shift integrated navigationsemi-physical simulation were put forward.In this paper, I mainly introduced the background of geomagnetic/spectrumred-shift integrated navigation and the research status at home and abroad. Then a briefintroduction of paper planning is given.After that,I introduce the basic principle ofnavigation system, including the common coordinate-navigation coordinate, geographiccoordinate and inertial coordinate, etc. Then two sub-systems of geomagnetic/spectrumred-shift integrated navigation-geomagnetic navigation system and the red-shiftnavigation system are introduced, and the sensors are chosen. Then according to thespecific magnetic and spectrum red-shift sensors, the noise characteristics of measureddata is studied, the result proved that the noise can be seen as white noise and processedwith Kalman filtering.Besides,0I set up the system model independently. Initialization is done and thestate model of the system is set up, including writing the state matrix and theobservation matrix. Then, by choosing another set of state variables, the state model issimplified. Then by calculating the Jacobi matrix, the system is turned linear around thenominal state.After setting up the model, geomagnetic/spectrum red-shift integrated navigationsimulation is done. After selecting the simulation initial state and writing Matlabsimulation code, the simulation of Kalman filter is carried out. After analyzing thefiltering results, we find that magnetic/spectrum red-shift integrated navigation methodsatisfies the requirement of navigation.At the last of the paper, the geomagnetic/spectrum red-shift integrated navigationon-ground semi-physical simulation experiment is introduced. After introducing the12-degrees-freedom semi-physical simulation system, experiment methods ofgeomagnetic/spectrum red-shift integrated navigation ground semi-physical simulationare introduced.