WAAS will provide the integrity for Category I precision approach and RAIM, if used, will serve in a backup role. RAIM can protect against local error sources (tropospheric and ionospheric effects, and possible interference), not observable to the WAAS. RAIM will not, however, be required for...
It is urgent and necessary to explore an optimized algorithm to construct a high-performance fingerprint database in a simple and convenient way to provide high-precision positioning services in indoor environments for a wide range of users. To address the existing problem of a large workload in...