Ins alignment method using a doppler sensor and a GPS/HVINS

Details Ins alignment method using a doppler sensor and a GPS/HVINS Ins alignment method using a doppler sensor and a GPS/HVINS

1998-01-21

2000-07-25

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

34235705, 701213, G01S 502, H04B 7185

Patent

active

060941634

ABSTRACT:
Transfer/in-flight alignment technique using a Doppler velocity sensor. An aircraft navigation system (10 and/or 20), a Doppler velocity sensor (50) and an alignment filter (45) are used to align the inertial navigation system (4) of a slave vehicle. The velocity (and/or position) of the aircraft navigation system, the velocity (and/or position) of the slave vehicle's inertial navigation system (40) and the velocity measurement of a Doppler velocity sensor (50) are used to generate the measurements of the alignment filter (45). The DVS and aircraft navigation system are used simultaneously to align the inertial navigation system of the slave vehicle. A GPS receiver (60) with a GPS antenna (70), a Doppler velocity sensor (50) and an alignment filer (46) are used to align the inertial navigation system (40) of a flight vehicle. The velocity (and/or position) of a GPS receiver (60), the velocity (and/or position) of the inertial navigation system (40) of a flight vehicle and the velocity measurement of a Doppler velocity sensor (50) are used to generate the measurements of the in-flight alignment filter (46).

REFERENCES:
patent: 3750456 (1973-08-01), Walker
patent: 5574650 (1996-11-01), Diesel
patent: 5657025 (1997-08-01), Ebner et al.
patent: 5672872 (1997-09-01), Wu et al.

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