Coaxial radar infrared dual-mode composite seeker two-axis platform mechanism and installation method

Abstract

The invention relates to the technical field of composite seeker two-axis platform structures, in particular to a coaxial radar infrared dual-mode composite seeker two-axis platform mechanism and an installation method. At least part of a card type infrared detection module is installed in a millimeter wave radar detection module; the pitching ring assembly and the millimeter-wave radar detection module are assembled and connected, so that the millimeter-wave radar detection module realizes axial rotation; the rolling ring assembly and the pitching ring assembly are assembled and connected so that the pitching ring assembly can rotate in the axial direction. The multispectral fairing and shell assembly is used for installing the millimeter wave radar detection module, the clamping type infrared detection module, the pitching ring assembly and the rolling ring assembly in the multispectral fairing and shell assembly. According to the method, the difficulty in structural design of the two-axis platform of the radar infrared dual-mode composite seeker is solved, compared with aperture division design, the method has the advantage of being good in view field alignment, coordinate system calibration and coordinate system conversion in the aperture division design are reduced, and the guidance precision is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of a two-axis platform structure of a composite seeker, and in particular to a two-axis platform structure of a coaxial radar infrared dual-mode composite seeker and an installation method thereof. Background Art

[0002] With the escalation of modern warfare, precision guidance, rapid strikes, and efficient destruction have become the mainstream. Precision-guided weapons have high-precision target classification and recognition capabilities for stealth targets, small targets, and low-altitude targets even under strong clutter, strong interference, and hard strike conditions, and have therefore attracted widespread attention at home and abroad. Seeker technology is one of the core technologies of precision-guided weapons, which is used to complete autonomous search, recognition, and tracking of targets, and to provide control signals required for guidance.

[0003] At present, most of the precision-guided weapons used on the battlefield are single-mode homing seekers. As the levels of confrontation encountered during the attack increase and the means of confrontation become more and more complex, coupled with the use of target stealth, sea-skimming attacks, high-speed penetration attacks and multi-directional saturation attack tactics, guided weapons using a single-mode homing guidance mode are basically unable to complete combat missions, and it is necessary to vigorously develop multi-mode composite homing guidance technology.

[0004] In multi-mode composite seekers, the combination of millimeter wave radar guidance system and infrared guidance system is the main research trend at home and abroad. The infrared radar dual-mode composite seeker combines the advantages of infrared and radar guidance technologies, and has several significant advantages such as improved detection accuracy, enhanced anti-interference ability, improved combat effectiveness, and improved environmental adaptability.

[0005] However, in the design process of the radar infrared dual-mode seeker, there are difficulties in designing the two-axis platform mechanism, which are specifically manifested in: (1) The internal space of the seeker is limited and cannot be reasonably laid out to accommodate the installation of millimeter-wave radar and infrared two-axis detection modules; (2) When the millimeter-wave radar receives signals, it is required that there are no other media that affect the transmission of electromagnetic waves at the front end (such as components such as infrared detection module lenses); (3) The aperture dual-mode composite design requires the relative position relationship of the coordinate systems of the two guidance systems to be calibrated in advance, and the requirements for structural processing errors, assembly errors, and solution errors are extremely high. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a two-axis platform mechanism and an installation method for a coaxial radar infrared dual-mode composite seeker, which solves the technical problem of the difficulty in designing a two-axis platform mechanism.

[0007] In order to achieve the above-mentioned and other related purposes, the present invention provides a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker, comprising:

[0008] Millimeter wave radar detection module; and,

[0009] A card-type infrared detection module, which is at least partially installed in the millimeter-wave radar detection module;

[0010] A pitch ring assembly, which is assembled and connected to the millimeter-wave radar detection module to enable the millimeter-wave radar detection module to achieve axial rotation;

[0011] A roll ring assembly, which is assembled and connected with the pitch ring assembly to enable the pitch ring assembly to achieve axial rotation;

[0012] The multi-spectral fairing and shell assembly is used to install the millimeter wave radar detection module, the card-type infrared detection module, the pitch ring assembly, and the roll ring assembly in the multi-spectral fairing and shell assembly.

[0013] In one embodiment of the present invention, the millimeter wave radar detection module and the card-type infrared detection module are coaxially arranged.

[0014] In one embodiment of the present invention, the pitch ring assembly comprises:

[0015] Two pitch axes; and,

[0016] Two pitch bearings, which are assembled with the two pitch axes in pairs;

[0017] A pitch frame is arranged on the outside of the millimeter-wave radar detection module, and the pitch bearing is installed in the middle of the pitch frame, at least part of the pitch axis is installed in the pitch bearing, at least part of the pitch axis is in contact with the millimeter-wave radar detection module, and one end of the pitch frame is connected to the roll ring assembly.

[0018] In one embodiment of the present invention, the pitch ring assembly further comprises:

[0019] a pitch drive element mounted on a surface of the pitch axis;

[0020] A pitch angle sensor is mounted on another surface of the pitch axis.

[0021] In one embodiment of the present invention, the rolling ring assembly comprises:

[0022] A roll frame, which is fixedly connected to one end of the pitch frame;

[0023] A roll axis, which is fixedly mounted on a side of the roll frame away from the pitch frame;

[0024] A rolling bearing, which is installed on the outer side of the rolling shaft;

[0025] The rolling slip ring is fixedly installed on a side of the rolling shaft away from the rolling frame.

[0026] In one embodiment of the present invention, the rolling ring assembly further comprises:

[0027] The rolling driving element is fixedly installed between the rolling frame and the rolling shaft.

[0028] In one embodiment of the present invention, the rolling ring assembly further comprises:

[0029] The roll angle sensor is fixedly installed between the roll frame and the roll axis.

[0030] In one embodiment of the present invention, the roll slip ring is fixedly mounted on a side of the roll shaft away from the roll frame through a stator.

[0031] The present invention also provides a method for installing a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker, comprising the above-mentioned two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker, and the installation method comprises:

[0032] S1. Assembling and adjusting the millimeter wave radar detection module and the card-type infrared detection module as separate components;

[0033] S2, inserting the card-type infrared detection module into the millimeter wave radar detection module;

[0034] S3, installing the card-type infrared detection module and the millimeter-wave radar detection module as a whole into the pitch ring assembly;

[0035] S4, installing the pitch ring assembly into the roll ring assembly;

[0036] S5. Install the card-type infrared detection module, millimeter wave radar detection module, pitch ring assembly, and roll ring assembly into the multi-spectral fairing and shell assembly.

[0037] As described above, the two-axis platform mechanism and installation method of a coaxial radar infrared dual-mode composite seeker of the present invention have the following beneficial effects:

[0038] (1) The coaxial radar infrared dual-mode composite seeker two-axis platform mechanism of the present invention adopts a two-module coaxial design, integrating the millimeter-wave radar and the card-type infrared module, solving the difficulties in the design of the two-axis platform structure of the radar infrared dual-mode composite seeker. Compared with the divided aperture design, it has the advantage of good field of view alignment, and reduces the coordinate system calibration and coordinate system conversion in the divided aperture design, which significantly improves the guidance accuracy.

[0039] (2) The two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention adopts a card-type folding lens infrared detection module, which has the advantages of long operating distance and good imaging quality compared with the transmission infrared detection module.

[0040] (3) The folding mirror in the card-type folding infrared module in the two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention is made of fully wave-transmitting materials. While ensuring the imaging quality, it has almost no effect on the reception of the millimeter-wave radar detection module and does not reduce the guidance accuracy of the system, thereby effectively realizing the coaxial coexistence of the two modules.

[0041] (4) The two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention adopts a roll-pitch platform structure, that is, a roll ring + pitch ring structure. Compared with the traditional orthogonal two-axis frame form, that is, the azimuth ring + pitch ring structure, it has the significant advantages of larger frame angle and more compact structure.

[0042] (5) The installation method of the two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention is simple and effective. Compared with the traditional aperture-divided installation, the coaxiality is better guaranteed and it is easier to maintain good strength, rigidity and stability of the structure. It has the advantages of easy operation, high reliability and quick disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A structural diagram of a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker provided in an embodiment of the present application.

[0044] Figure 2 A cross-sectional structural diagram of a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker provided in an embodiment of the present application.

[0045] Figure 3 A workflow diagram of a method for installing a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker provided in an embodiment of the present application.

[0046] Component number description

[0047] 1. Millimeter wave radar detection module

[0048] 2 card infrared detection module

[0049] 3 Multi-spectral fairing and shell components

[0050] 4 Pitch frame

[0051] 5 Pitch axis

[0052] 6 Pitch drive element

[0053] 7 Pitch angle sensor

[0054] 8 Pitch bearing

[0055] 9 Roll frame

[0056] 10 Roll drive element

[0057] 11 Roller bearing

[0058] 12 Rolling slip ring

[0059] 13 Roll axis DETAILED DESCRIPTION

[0060] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0061] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0062] Terms such as first or second can be used to describe various components, but these components are not limited by the above terms. The above terms are used to distinguish one component from another component, for example, without departing from the scope of the concept according to the present disclosure, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component.

[0063] In addition, "connected / coupled" means that one component is directly electrically coupled to another component or is indirectly electrically coupled through another component. The singular form may include the plural form unless explicitly stated in the sentence. In addition, "include / comprise" or "includes / comprises" used in this specification indicates that one or more components, steps, operations, and elements exist or have been added. The specific structural or functional descriptions of the examples of the implementation of the concepts disclosed in this specification are only illustrated to describe the examples of the implementation of the concepts, and the examples of the implementation of the concepts can be implemented in various forms, but these descriptions are not limited to the examples of the implementation described in this specification.

[0064] According to the concept, various modifications and changes can be applied to the examples of the embodiments, so that the examples of the embodiments will be illustrated in the drawings and described in the specification. However, the examples of the embodiments according to the concept are not limited to the specific embodiments, but include all changes, equivalents or replacements included in the spirit and technical scope of the present disclosure.

[0065] It should be understood that when an element is described as being "coupled" or "connected" to another element, the element may be directly coupled or directly connected to the other element, or may be coupled or connected to the other element through a third element. Conversely, it should be understood that when an element is referred to as being "directly coupled to" or "directly coupled to" another element, no other element is placed between them. Other expressions describing the relationship between components (i.e., "between" and "directly between" or "adjacent to" and "directly adjacent to") need to be interpreted in the same manner.

[0066] The terms used in this specification are only used to describe specific examples of the embodiments and are not intended to limit the present disclosure. If there is no clear opposite meaning in the context, the singular form may include the plural form. In this specification, it should be understood that the term "including" or "having" indicates the presence of the features, quantities, steps, operations, components, parts or combinations thereof described in the specification, but the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts or combinations thereof cannot be precluded.

[0067] If there is no contrary definition, all terms (including technical terms or scientific terms) used herein have the same meaning as those generally understood by ordinary technicians in the field. If the terms defined in the commonly used dictionary are not clearly defined in this specification, they should be interpreted as having the same meaning as in the context of the relevant technology, and not interpreted as ideal or overly formal meanings.

[0068] Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure.

[0069] Throughout the specification, the same reference numerals refer to the same elements. Thus, even if a reference numeral is not mentioned or described with reference to one figure, it may be mentioned or described with reference to another figure. Furthermore, even if a reference numeral is not shown in one figure, it may be mentioned or described with reference to another figure.

[0070] In addition, the logic level of the signal may be different or opposite to the described logic level. For example, a signal described as having a logic "high" level may alternatively have a logic "low" level, and a signal described as having a logic "low" level may alternatively have a logic "high" level.

[0071] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented.

[0072] See also Figure 1 , Figure 2 , Figure 1 A structural diagram of a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker provided in an embodiment of the present application. Figure 2 A cross-sectional structural diagram of a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker provided in an embodiment of the present application. The present invention provides a coaxial radar infrared dual-mode composite seeker two-axis platform mechanism, characterized in that it comprises a millimeter-wave radar detection module 1, a card-type infrared detection module 2, a pitch ring assembly, a roll ring assembly, a multi-spectral fairing and a shell assembly 3, wherein at least part of the card-type infrared detection module 2 is installed in the millimeter-wave radar detection module 1; the pitch ring assembly is assembled and connected with the millimeter-wave radar detection module 1 so that the millimeter-wave radar detection module 1 can realize axial rotation; the roll ring assembly is assembled and connected with the pitch ring assembly so that the pitch ring assembly can realize axial rotation; the multi-spectral fairing and shell assembly 3 is used to install the millimeter-wave radar detection module 1, the card-type infrared detection module 2, the pitch ring assembly, and the roll ring assembly in the multi-spectral fairing and shell assembly 3.

[0073] In one embodiment of the present invention, during installation, the millimeter wave radar detection module 1 and the card-type infrared detection module 2 are first assembled and adjusted as separate components.

[0074] In one embodiment of the present invention, the card-type infrared detection module 2 is installed into the millimeter-wave radar detection module 1 from front to back, that is, from left to right as shown in the figure, and its coaxiality is debugged through relevant tooling to ensure that its center consistency is within the allowable error range.

[0075] The two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention adopts a card-type infrared detection module 2, which has the advantages of long operating distance and good imaging quality compared with a transmission-type infrared detection module.

[0076] Generally, due to the internal space constraints of the seeker, both the millimeter wave radar module and the card-type infrared module have the defects of being large in size and difficult to adjust, and cannot be used for compounding. The return mirror in the card-type infrared detection module 2 in the two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention adopts a fully wave-transmitting material, which has almost no effect on the reception of the millimeter wave radar detection module 1 while ensuring the imaging quality, does not reduce the guidance accuracy of the system, and effectively realizes the coaxial coexistence of the two modules.

[0077] In one embodiment of the present invention, the millimeter wave radar detection module 1 needs to debug the millimeter wave radar antenna receiving and transmitting signal functions, power amplification functions, etc.

[0078] In one embodiment of the present invention, the card-type infrared detection module 2 needs to adjust the card-type folding lens to ensure good imaging quality.

[0079] Specifically, the millimeter wave radar detection module 1 and the card-type infrared detection module 2 are coaxially arranged.

[0080] Specifically, the pitch ring assembly includes two pitch axes 5, two pitch bearings 8, and a pitch frame 4. The two pitch bearings 8 are assembled in pairs with the two pitch axes 5; the pitch frame 4 is arranged on the outside of the millimeter-wave radar detection module 1, and the pitch bearing 8 is installed in the middle of the pitch frame 4, at least part of the pitch axis 5 is installed in the pitch bearing 8, at least part of the pitch axis 5 is in contact with the millimeter-wave radar detection module 1, and one end of the pitch frame 4 is connected to the roll ring assembly.

[0081] Specifically, the pitch ring assembly further includes a pitch driving element 6 and a pitch angle sensor 7 . The pitch driving element 6 is mounted on the surface of one of the pitch shafts 5 ; and the pitch angle sensor 7 is mounted on the surface of another of the pitch shafts 5 .

[0082] In one embodiment of the present invention, the card-type infrared detection module 2 and the millimeter-wave radar detection module 1 are installed as a whole into the pitch frame 4, and the specific installation sequence is: the pitch axis 5 and the pitch bearing 8 are matched in pairs to meet the axial rotation flexibility, and the matched pitch axis 5 and the pitch bearing 8 are installed into the pitch frame 4, the card-type infrared detection module 2 and the millimeter-wave radar detection module 1 are fixedly connected to the pitch axis as a whole, and finally the pitch drive element 6 and the pitch angle sensor 7 are installed into the pitch ring assembly, thereby completing the assembly of the pitch ring assembly.

[0083] Specifically, the roll ring assembly includes a roll frame 9, a roll axis 13, a roll bearing 11, and a roll slip ring 12. The roll frame 9 is fixedly connected to one end of the pitch frame 4; the roll axis 13 is fixedly installed on a side of the roll frame 9 away from the pitch frame 4; the roll bearing 11 is installed on the outside of the roll axis 13; and the roll slip ring 12 is fixedly installed on a side of the roll axis 13 away from the roll frame 9.

[0084] Specifically, the rolling ring assembly further includes: a rolling driving element 10 , which is fixedly installed between the rolling frame 9 and the rolling shaft 13 .

[0085] Specifically, the roll ring assembly further includes: a roll angle sensor, which is fixedly installed between the roll frame 9 and the roll shaft 13 .

[0086] Specifically, the rolling slip ring 12 is fixedly mounted on a side of the rolling shaft 13 away from the rolling frame 9 through a stator.

[0087] In one embodiment of the present invention, the pitch ring assembly is installed into the roll ring assembly, and the specific installation sequence is: similarly, the roll bearing 11 and the roll shaft 13 are matched, and the roll slip ring 12 is installed into the roll shaft 13 to meet the axial rotation flexibility, and the stator of the roll slip ring 12 is fixedly connected to the roll shaft 13. The pitch ring assembly is fixedly connected to the roll frame 9, and the roll frame 9 is installed into the roll shaft 13, and the roll drive element 10 / roll angle sensor is installed to complete the assembly of the roll ring assembly.

[0088] The two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention adopts a roll and pitch platform structure, that is, a roll ring + pitch ring structure. Compared with the traditional orthogonal two-axis frame form, that is, an azimuth ring + pitch ring structure, it has the significant advantages of a larger frame angle and a more compact structure.

[0089] In one embodiment of the present invention, the rolling ring assembly is installed into the multi-spectral fairing and shell assembly 3 to complete the installation of the two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker.

[0090] To sum up, the coaxial radar infrared dual-mode composite seeker two-axis platform mechanism of the present invention adopts a two-module coaxial design, integrating the millimeter-wave radar and the card-type infrared module, solving the difficulties in the design of the two-axis platform structure of the radar infrared dual-mode composite seeker, and compared with the divided aperture design, it has the advantage of good field of view alignment, and reduces the coordinate system calibration and coordinate system conversion in the divided aperture design, significantly improving the guidance accuracy.

[0091] See also Figure 3 , Figure 3The present invention also provides a method for installing a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker, including the above-mentioned two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker, and the installation method includes:

[0092] Step S1, assembling and adjusting the millimeter wave radar detection module 1 and the card-type infrared detection module 2 as separate components.

[0093] Step S2: Install the card-type infrared detection module 2 into the millimeter-wave radar detection module 1.

[0094] Step S3, installing the card-type infrared detection module 2 and the millimeter-wave radar detection module 1 as a whole into the pitch ring assembly.

[0095] Step S4: Install the pitch ring assembly into the roll ring assembly.

[0096] Step S5, installing the card-type infrared detection module 2, the millimeter-wave radar detection module 1, the pitch ring assembly, and the roll ring assembly into the multi-spectral fairing and shell assembly 3.

[0097] To sum up, the installation method of the two-axis platform mechanism of the coaxial radar infrared dual-mode composite seeker of the present invention is simple and effective. Compared with the traditional aperture installation, the coaxiality is better guaranteed and it is easier to maintain good strength, rigidity and stability of the structure. It has the advantages of easy operation, high reliability and quick disassembly.

[0098] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker, characterized in that: include: Millimeter wave radar detection module (1); as well as, A card-type infrared detection module (2), which is at least partially installed in the millimeter wave radar detection module (1); a pitch ring assembly, which is assembled and connected to the millimeter wave radar detection module (1) so as to enable the millimeter wave radar detection module (1) to achieve axial rotation; A roll ring assembly, which is assembled and connected with the pitch ring assembly to enable the pitch ring assembly to achieve axial rotation; A multi-spectral fairing and shell assembly (3) is used to install the millimeter wave radar detection module (1), the card-type infrared detection module (2), the pitch ring assembly, and the roll ring assembly in the multi-spectral fairing and shell assembly (3).

2. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 1 is characterized in that: The millimeter wave radar detection module (1) and the card-type infrared detection module (2) are coaxially arranged.

3. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 1 is characterized in that: The pitch ring assembly comprises: two pitch axes (5); and, Two pitch bearings (8), which are assembled with the two pitch shafts (5) in pairs; A pitch frame (4) is arranged on the outside of the millimeter-wave radar detection module (1), and the pitch bearing (8) is installed in the middle of the pitch frame (4), at least part of the pitch axis (5) is installed in the pitch bearing (8), at least part of the pitch axis (5) is in contact with the millimeter-wave radar detection module (1), and one end of the pitch frame (4) is connected to the roll ring assembly.

4. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 3 is characterized in that: The pitch ring assembly also includes: A pitch driving element (6) mounted on a surface of the pitch axis (5); A pitch angle sensor (7) is mounted on the surface of another pitch axis (5).

5. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 4 is characterized in that: The rolling ring assembly comprises: A roll frame (9) fixedly connected to one end of the pitch frame (4); A roll axis (13) fixedly mounted on a side of the roll frame (9) away from the pitch frame (4); A rolling bearing (11) mounted on the outer side of the rolling shaft (13); A rolling slip ring (12) is fixedly mounted on a side of the rolling shaft (13) away from the rolling frame (9).

6. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 5 is characterized in that: The rolling ring assembly also includes: A rolling drive element is fixedly installed between the rolling frame (9) and the rolling shaft (13).

7. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 5 is characterized in that: The rolling ring assembly also includes: A roll angle sensor is fixedly installed between the roll frame (9) and the roll shaft (13).

8. The two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker according to claim 5 is characterized by: The rolling slip ring (12) is fixedly mounted on a side of the rolling shaft (13) away from the rolling frame (9) via a stator.

9. A method for installing a two-axis platform mechanism of a coaxial radar infrared dual-mode composite seeker, characterized in that: The coaxial radar infrared dual-mode composite seeker two-axis platform mechanism comprises any one of claims 1 to 8, and the installation method comprises: S1, assembling and adjusting the millimeter wave radar detection module (1) and the card-type infrared detection module (2) as separate components; S2, installing the card-type infrared detection module (2) into the millimeter wave radar detection module (1); S3, installing the card-type infrared detection module (2) and the millimeter wave radar detection module (1) as a whole into the pitch ring assembly; S4, installing the pitch ring assembly into the roll ring assembly; S5. Install the card-type infrared detection module (2), the millimeter wave radar detection module (1), the pitch ring assembly, and the roll ring assembly into the multi-spectral fairing and shell assembly (3).

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