Abstract
Global navigation satellite systems, which provide high accuracy of navigation, in certain conditions (in tunnels, in closed rooms, in conditions of interference, etc.) have restrictions on their use. In this regard, in order to ensure “seamless” navigation in any conditions of the situation, it becomes necessary to develop new methods and means to increase the stability of navigation definitions. The article is devoted to the consideration of the problems of creating an integrated navigation system using measurements of the parameters of the Earth’s gravitational and magnetic fields. Requirements for meters of parameters of geophysical fields and navigation charts are considered, a number of new navigation meters, new methods and means of preparing navigation charts are proposed. The ways of development of relativistic geodesy and the possibility of using the achievements of gravitational-wave astronomy in gravimetry are considered.
Highlights
The widely used global navigation satellite systems (GNSS) GPS, GLONASS, GALILEO, BeiDou provide high potential navigation definition accuracy, global coverage and navigation continuity
One of the way to increase the noise immunity of navigation solutions is to create an integrated navigation system based on the use of a correlation-extreme navigation system (CENS) operating on the anomalous Earth's gravitational field (EGF) and Earth's magnetic field (EMF)
Autonomous navigation based on the use of the parameters of the Earth's gravitational and magnetic fields is one of the most effective directions for the development of assisting GNSS technologies in difficult conditions
Summary
The widely used global navigation satellite systems (GNSS) GPS, GLONASS, GALILEO, BeiDou provide high potential navigation definition accuracy, global coverage and navigation continuity. One of the way to increase the noise immunity of navigation solutions is to create an integrated navigation system based on the use of a correlation-extreme navigation system (CENS) operating on the anomalous Earth's gravitational field (EGF) and Earth's magnetic field (EMF) It should include an airborne strapdown navigation system (SINS) based on the use of accelerometers and gyroscopes, as well as sensors of the current parameters of. To assess the achievable accuracy of an integrated navigation system using a EGF, its mathematical modeling was carried out using a special model In this case, joint measurements of SINS (with drift 1.8 km/h), gravity anomalies (GA) and gravitational gradient (GG) (SINS + gravimeter + gradiometer) were used. FSUE "VNIIFTRI" has created and tested an onboard model of a ground vehicle navigation system for geophysical fields - EGF and EMF It includes an SINS, a magnetic field meter (magnetometer and magnetic gradiometer), and a small-sized onboard gravimeter developed at FSUE "VNIIFTRI". When using information about the current EGF and EMF parameters, the navigation error on the route did not exceed 900 m
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