초록 ▼

Compressed wavelet transform coefficients are used to correct outputs of inertial sensors for gravitational deflections. The compressed wavelet transform coefficients comprise gravitational deflection data that is first converted to discrete wavelet coefficients by a discrete wavelet transform and t

Compressed wavelet transform coefficients are used to correct outputs of inertial sensors for gravitational deflections. The compressed wavelet transform coefficients comprise gravitational deflection data that is first converted to discrete wavelet coefficients by a discrete wavelet transform and that are then compressed to form the compressed wavelet transform coefficients. An inertial sensor signal relating to a first navigational parameter of a vehicle is generated. The compressed discrete wavelet coefficients are accessed from a memory based on a position of the vehicle. The accessed coefficients are decompressed, and an inverse discrete wavelet transform is performed on the decompressed coefficients to produce gravitational compensation data. The sensor signal is compensated based on the gravitational compensation data.

대표청구항 ▼

Compressed wavelet transform coefficients are used to correct outputs of inertial sensors for gravitational deflections. The compressed wavelet transform coefficients comprise gravitational deflection data that is first converted to discrete wavelet coefficients by a discrete wavelet transform and t

Compressed wavelet transform coefficients are used to correct outputs of inertial sensors for gravitational deflections. The compressed wavelet transform coefficients comprise gravitational deflection data that is first converted to discrete wavelet coefficients by a discrete wavelet transform and that are then compressed to form the compressed wavelet transform coefficients. An inertial sensor signal relating to a first navigational parameter of a vehicle is generated. The compressed discrete wavelet coefficients are accessed from a memory based on a position of the vehicle. The accessed coefficients are decompressed, and an inverse discrete wavelet transform is performed on the decompressed coefficients to produce gravitational compensation data. The sensor signal is compensated based on the gravitational compensation data. ; US-5746049, 19980500, Cullen et al.; US-5746052, 19980500, Kinugasa et al.; US-5752492, 19980500, Kato et al.; US-5771685, 19980600, Hepburn; US-5771686, 19980600, Pischinger et al.; US-5778666, 19980700, Cullen et al.; US-5792436, 19980800, Feeley et al.; US-5802843, 19980900, Kurihara et al.; US-5803048, 19980900, Yano et al.; US-5806306, 19980900, Okamoto et al.; US-5813387, 19980900, Minowa et al.; US-5831267, 19981100, Jack et al.; US-5832722, 19981100, Cullen et al.; US-5842339, 19981200, Bush et al.; US-5842340, 19981200, Bush et al.; US-5862661, 19990100, Zhang et al.; US-5865027, 19990200, Hanafusa et al.; US-5867983, 19990200, Otani; US-5877413, 19990300, Hamburg et al.; US-5910096, 19990600, Hepburn et al.; US-5929320, 19990700, Yoo; US-5934072, 19990800, Hirota et al.; US-5938715, 19990800, Zhang et al.; US-5953907, 19990900, Kato et al.; US-5966930, 19991000, Hatano et al.; US-5970707, 19991000, Sawada et al.; US-5974788, 19991100, Hepburn et al.; US-5974791, 19991100, Hirota et al.; US-5974793, 19991100, Kinugasa et al.; US-5974794,