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A DEEPLY-INTEGRATED ADAPTIVE INS/GPS NAVIGATOR WITH EXTENDED-RANGE CODE TRACKING
A DEEPLY-INTEGRATED ADAPTIVE INS/GPS NAVIGATOR WITH EXTENDED-RANGE CODE TRACKING
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机译:具有扩展范围代码跟踪的深度集成自适应INS / GPS导航仪
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摘要
A system and method for generating a multidimensional navigation solution utilizes Global Positioning System (GPS) data to obtain highly reliable and accurate navigational solutions in high interference and dynamic environments, at a performance level which has been heretofore unattainable. Additional sensors such as inertial (gyros and accelerometers), altimeters, radars, etc. may be employed in a deeply integrated configuration. The approach taken in the present invention differs from that of previous techniques through its exploitation of nonlinear filtering methods; as a result, the navigation system architecture and processes employed yield significant improvements in navigation system performance, both in code tracking and reacquisition, and in carrier tracking and reacquisition. The improvements are particularly significant at low signal/noise ratios, where conventional approaches are especially susceptible to loss of code lock or carrier lock.
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