Mini quick-connecting inertia measurement system zero speed correcting method

The invention provides a zero-speed correction method for a miniature strap-down inertia measurement system. The method is an improved curve fitting zero-speed correction technique which can improve the position measurement precision of the miniature strap-down inertia measurement system on the premise without increasing the cost for the miniature strap-down inertia measurement system. The miniature strap-down inertia measurement system utilizes a gyroscope and an accelerometer to output the speed and position of a measurement carrier. Speed measurement errors of the miniature strap-down inertia measurement system are recorded at three or more than three parking time points; a speed error curve within a zero-speed correction time interval is obtained through a curve fitting technical proposal; then a position error correction value is obtained through integration; and finally a corrected position coordinate is obtained after calculating the difference between the position error correction value and a position measurement value of the miniature strap-down inertia measurement system.