New strapdown seeker system integration method based on virtual optical axis
A virtual optical axis and system integration technology, applied in the aerospace field, can solve the problems of noise sensitivity, unstable guidance loop, and lower signal-to-noise ratio, and achieve the effect of not amplifying noise and facilitating multi-rate signal processing
Active Publication Date: 2020-01-21
NORTHWESTERN POLYTECHNICAL UNIV +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] However, the decoupling method of feeding back the attitude information of the missile body to the output of the seeker, for some typical parameters of the homing missile, the guidance loop is unstable, and to make the guidance loop stable, the seeker angle tracking system must be set to If the bandwidth is increased enough, it means that the tracking bandwidth of the seeker will be much larger than the bandwidth needed to track the expected maneuvering target, which will make the system more sensitive to noise and reduce the signal-to-noise ratio; the missile attitude information will be fed back to The decoupling method of the seeker angle tracking loop is stable for the typical parameters of the homing missile, but the differential network is still used in it, but after the adoption, the system is still sensitive to noise
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] See figure 1 — figure 2 , figure 1 Each parameter is explained as follows:
[0026] JS1: Target line-of-sight angle measurement, filter estimation and difference compensation calculation module in projectile coordinate system [, inertial angle measuring element];
[0027] JS2: Missile body attitude angle measurement, filter estimation calculation module [inertial angle measuring element];
[0028] JS3: Virtual optical axis inertial space pointing angle calculation module [inertial angle measuring element];
[0029] JS4: Pointing angle reconstruction and matching filter calculation module of virtual optical axis bullet system [inertial angle measuring element];
[0030] JS5: virtual offset angle calculation module [inertial angle measuring element];
[0031] JS6: Virtual optical axis inertial space pointing angular velocity calculation module [inertial velocity measuring element];
[0032] q: line of sight
[0033] The reconstructed value of the line-of-sight angular velocity of t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a new strapdown seeker system integration method based on a virtual optical axis. By introducing a new concept of the virtual optical axis, reconstruction of a line-of-light rate of an inertial space target is realized; and compared with the classical direct differential method, the method provided by the invention has the advantages that noise is not amplified and multirate signal processing is facilitated.
Description
Technical field [0001] The invention belongs to the field of aerospace technology, and relates to a new method for synthesizing a strapdown seeker system based on a virtual optical axis Background technique [0002] Compared with traditional powered gyro and frame seekers, the strap-down seeker's detector is rigidly connected to the projectile directly, eliminating the movable mechanism, and has a simple structure, which can effectively miniaturize the whole projectile. , And reduce manufacturing costs and improve reliability. However, the strap-down seeker cannot directly output the line-of-sight angular rate, and requires the combination of the detector and the inertial device to obtain the line-of-sight angular rate. For strapdown seekers, it is necessary to complete the estimation of the line-of-sight angular velocity when designing the guidance law, and then use the guidance law suitable for strapdown guidance systems. [0003] For strap-down seekers, theoretically, the iner...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 杨军朱学平袁博朱苏朋李玥杨婷
Owner NORTHWESTERN POLYTECHNICAL UNIV