A system and method for generating a multidimensional navigation solutionutilizes Global Positioning System (GPS) data to obtain highly reliable andaccurate navigational solutions in high interference and dynamic environments,at a performance level which has been heretofore unattainable. Additionalsensors such as inertial (gyros and accelerometers), altimeters, radars, etc.may be employed in a deeply integrated configuration. The approach taken inthe present invention differs from that of previous techniques through itsexploitation of nonlinear filtering methods; as a result, the navigationsystem architecture and processes employed yield significant improvements innavigation system performance, both in code tracking and reacquisition, and incarrier tracking and reacquisition. The improvements are particularlysignificant at low signal/noise ratios, where conventional approaches areespecially susceptible to loss of code lock or carrier lock.
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