Uscg solicitation 90-cg5 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… More

Earlier studies on Locus' new Loran technology demonstrated that Loran signals can be received in urban/indoor environments where GPS is unavailable, but additional development was needed to utilize Loran's advantages in these applications. Nevertheless, it is clear that a combination of… More