Error compensation in the case of temperature deviations supported in barometric inertial navigation system

摘要

A method for the purpose of error compensation in the case of temperature deviations in barometric supported inertia sensor systems, in the measured values of the acceleration is detected (10) and are suitably transformed and a corresponding acceleration signal (vert accel is) is generated, and this for generating a signal representing a geodetic the vertical speed (gvs) integrated once (20) and for generating a signal indicating the height (ifba) a second time (30) is integrated, wherein the obtained signal indicating the height measurement with a barometric altitude value obtained from a standardized standard atmosphere (hstdbaro) is adjusted (82), wherein the error compensation comprises the generation of at least a correction variable, which is a function of the deviation of the actual temperature (stt) of the standard temperature in the corresponding height, and that the from the measured values of the acceleration signal generated in the vertical direction (vert accel is; gvs; ifba) with which the temperature deviation is acted upon, representing respective correction variable for the formation of speed - and positional values (bvs; ifba), characterized in that the the temperature-corrected height indicative signal (ifba) for generating a temperature - and pressure corrected, the geometric elevation in better extent corresponding signal (ifbaptc) a further temperature correction with respect to the actual temperature (stt) and at the same time a pressure correction (60) with respect to the after standard atmosphere on sea level reduced measured air pressure (qnh) or of the measured air pressure at the bottom, based on the location height (qfe) is subjected to.