Guidance information extracting method and system used for semi-strapdown infrared guiding head
A technology of infrared guidance and guidance information, applied in guidance methods, weapon accessories, offensive equipment, etc., can solve problems such as difficulty in obtaining relative pose estimation of projectiles, weak observability, and high requirements for filter parameter adaptability
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Embodiment 1
[0065] figure 1 It is a flowchart of a method for extracting guidance information for a semi-strapdown infrared seeker according to Embodiment 1 of the present invention.
[0066] see figure 1 , the method for extracting guidance information for a semi-strapdown infrared seeker of an embodiment, comprising:
[0067] Step S1: Obtain the image of the infrared seeker, the parameters of the infrared seeker and the misalignment angle of the infrared seeker.
[0068] The infrared seeker parameters include the number of pixels in the horizontal direction of the infrared imaging plane, the number of pixels in the vertical direction of the infrared imaging plane, the length of the viewing plane, the width of the viewing plane, the horizontal field of view and the vertical field of view.
[0069] Step S2: Determine pixel information according to the infrared seeker image.
[0070] The pixel information includes the number of pixels occupied by the projected length of the target on th...
Embodiment 2
[0093] Step 1: According to the infrared seeker image and other reference auxiliary information, identify the type of the target, and then query the database according to the identification result to obtain the necessary information.
[0094] This step mainly achieves the acquisition of prior information, and retrieves target-related parameters in the database according to the target recognition results. The target recognition system is not the focus of this embodiment, so the introduction of this part is omitted. On the basis of the target recognition result, the infrared characteristic size of the relevant target (mainly referring to the characteristic size of the target part that can be sensed by the infrared imaging probe) is obtained by querying the relevant database, which is defined as a and b, respectively, the target infrared Feature length and target IR feature width.
[0095] Step 2: Estimate the relative distance of the projectile according to the infrared seeker ...
Embodiment 3
[0181] This embodiment provides a guidance information extraction system for a semi-strapdown infrared seeker, Figure 6 It is a schematic structural diagram of a guidance information extraction system for a semi-strapdown infrared seeker according to Embodiment 3 of the present invention.
[0182] see Figure 6 , the guidance information extraction system used in this embodiment for the semi-strapdown infrared seeker includes:
[0183] The image information acquisition module 601 is used to obtain the infrared seeker image, the infrared seeker parameters and the infrared seeker misalignment angle; the infrared seeker parameters include the number of pixels in the horizontal direction of the infrared imaging plane, the infrared imaging plane The number of pixels in the vertical direction, the length of the viewing plane, the width of the viewing plane, the horizontal viewing angle, and the vertical viewing angle.
[0184] The pixel information determining module 602 is used ...
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