Geomagnetic Satellite Integrated Navigation Method for Rotating Missile Based on Dynamic Model Assistance
A technology of dynamic model and integrated navigation, which is applied in the field of measurement of flight attitude, velocity and position of aircraft or rotating bombs. It can solve the problems of low measurement accuracy, poor reliability, and incomplete flight parameter testing, etc., so as to improve accuracy and reliability. Effect
Active Publication Date: 2022-04-01
北京恒准时代科技有限公司
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[0002] Due to the special application environment of the "three highs" of high overload, high spin and high dynamics of the rotating projectile, the existing mature missile-borne measurement system cannot be directly transplanted to the test application of the rotating projectile, which has poor reliability and incomplete flight parameter testing. Or low measurement accuracy and other issues
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[0057] In the following, the combined navigation method of the rotating elastic geomagnetic satellite based on the dynamic model of the present invention will be further described in detail in combination with specific embodiments and accompanying drawings.
[0058] Such as figure 1 Shown is a schematic diagram of the geomagnetic / satellite integrated navigation solution scheme based on the dynamic model assistance provided by the present invention, wherein the missile-borne sensor is composed of a three-axis geomagnetic sensor and a satellite navigation system. The geomagnetic satellite integrated navigation method for rotating missiles mainly includes the following two processes:
[0059] (1) Using the projectile dynamics model and the measurement equation of the satellite navigation system to construct a filtering model, the projectile position is completed by the EKF filtering algorithm and speed estimates
[0060] (2) Velocity information estimated by the projectile f...
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The invention provides a geomagnetic-satellite integrated navigation method for rotating missiles assisted by a dynamic model, and provides a combined geomagnetic / satellite solution solution for a rotating missile based on a dynamic model. The equations jointly construct a filtering model, and the EKF filtering algorithm completes the estimation of the position and velocity of the projectile; then uses the velocity information to estimate the pitch angle of the projectile in real time, and finally completes the optimal solution of the yaw angle and roll angle attitude of the projectile by an iterative algorithm, thus Effectively improve the accuracy and reliability of testing rotary bombs.
Description
technical field [0001] The invention relates to the technical field of measurement methods for flying attitude, velocity and position of aircraft or rotating missiles, in particular to a geomagnetic satellite integrated navigation method for rotating missiles based on dynamic model assistance. Background technique [0002] Due to the special application environment of the "three highs" of high overload, high spin and high dynamics of the rotating projectile, the existing mature missile-borne measurement system cannot be directly transplanted to the test application of the rotating projectile, which has poor reliability and incomplete flight parameter testing. Or problems such as low measurement accuracy. Therefore, the high-precision attitude measurement technology of high-speed rotating ammunition is the difficulty of its guided transformation. The measurement problem has important theoretical value and practical significance. Contents of the invention [0003] In view ...
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IPC IPC(8): G01C21/00G01C21/08G01C21/20G01S19/42G01S19/48G01S19/52G01S19/53G06F30/20
CPCG01C21/08G01C21/005G01C21/20G01S19/42G01S19/52G01S19/53G01S19/48G06F30/20G06F2119/14
Inventor 龙达峰孙俊丽
Owner 北京恒准时代科技有限公司