Laser Gyro Strapdown Inertial Navigation System Status Monitoring

As Laser Gyro Strapdown Inertial Navigation System(LSDINS) independently accomplishes navigation assignment entirely, with great sensitivity range and being out of moving components, has many virtues such as low cost, high reliability and suitability for high dynamic circumstance etc. So it is used in fields of aviation, spaceflight and seafaring abroadly. but LSDINS is at the beginning of actual application in our country, has some weaknesses in reliability and maintainance quality, bring bad effect on the use of LSDINS .This thesis stresses work over state supervisory technology of LSDINS used in guided weapon. Owing to the relation between hardware supervisory and hardware structure of Inertial Navigation System, so state supervisory technology is combined with the design of LSDINS, especially the design of Navigation Computer and interface circuit.In the design of LSDINS, state supervisory technology with hardware redundance is employed, corresponding software and hardware are also used. Besides conventional state supervisory technology, the author stresses work on limited recover technology and state supervisory techonology combining with maintainance system aiming at the specialty of guided weapons Inertial Navigation Sytem.It is proved that state supervisory technology works properly after Navigation computer debugging, system software debugging and state supervisory debugging. The system can display system state or transmits message to external testing equipment when there is somenting wrong. The technology can be applied in actual products.