USCG Solicitation 90CG5 suggests evaluation of Kalman Filtering, a digital signal processing (DSP) technique, to improve geodetic positioning provided by single chain, and eventually, multichain LORAN receivers. A DSP technique comparable to Kalman Filtering has already been implemented on a single chain LORAN receiver, resulting in substantial geodetic positioning improvements in noisy, dynamic environments. These improvements have been documented during extensive studies using off-air and simulator signals. Given our documented success of the DSP implementation on a single chain receiver, our Phase I proposal addresses the goal of converting this DSP technique to a multichain system. Specific tasks detailed in the proposal are: (1) determine the feasibility of converting existing DSP techniques to a multichain environment; (2) project the capabilities of a multichain system using those converted DSP techniques; and (3) structure a development plan and determine the development tools required for the actual implementation during Phase II.
Anticipated Results:(1) existing DSP techniques converted to multichain environment; 2.) projected receiver performance substantially enhanced; (3) strategy and tools for Phase II conversion. Commercial Applications: all existenting marine, aviation, and terrestrial (vehicle location) applications. Government Applications: for Depts. of Transportation, Defense, Interior
