The alignment of a strapdown inertial navagation system (SDINS) is the process whereby the orientation of body frame is determined with respect to the navigation frame. In a broad sense, alignment of SDINS can be classified as initial alignment and in-flight alignment (IFA). The IFA is performed with IMU and external sensors during the vehicle flight, in which the primary assistant sources are satellite system, radar, or other airborne equipment, offering reference signals like position, velocity, or attitude to assist the alignment process. However, these sources have disadvantages in redundancy, independence, and stability, which will be incipient faults in emergency take-off or warfare. So it is necessary for us to analyse the subsidiary airborne equipments and design new in-flight alignment scheme.
An In-Flight Emergency Alignment Scheme for Aircraft MINS with Assistant of Airborne SAR
2013
8 Seiten
Aufsatz (Konferenz)
Englisch
An In-Flight Emergency Alignment Scheme for Aircraft MINS with Assistant of Airborne SAR
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