Laser communication load ATP structure suitable for panel satellite

Abstract

The invention provides a laser communication load ATP structure suitable for a flat satellite, which comprises a telescope assembly, a pitch axis rotating assembly, an azimuth axis rotating assembly and a rear light path assembly, the azimuth axis rotating assembly is transversely and fixedly arranged on the rear light path assembly, the end part of the azimuth axis rotating assembly is fixedly connected with one side of the pitch axis rotating assembly, and the other side of the pitch axis rotating assembly is fixedly connected with the rear light path assembly. The end part of the pitch axis rotating assembly is fixedly connected with one side of the telescope assembly; the azimuth axis of the azimuth axis rotating assembly is orthogonal to the pitch axis of the pitch axis rotating assembly, and the pitch axis is orthogonal to the optical axis of the telescope assembly; light sequentially passes through the telescope assembly, the pitch axis rotating assembly and the azimuth axis rotating assembly and then enters the rear light path assembly. When the mechanism is locked, horizontal installation can be achieved, the telescope and the two-dimensional rotary table can be integrated with the rear light path assembly, the mechanism is smaller and lighter, and installation and adjustment work is simpler and more convenient. The mechanism has higher vibration adaptability when a rocket is launched, so that the capturing, tracking and pointing performance of the mechanism after orbit injection is more reliable.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a laser communication payload ATP structure suitable for a flat-panel satellite. Background Art

[0002] The ATP stand-alone on-orbit laser communication payload refers to one of the important components that satellites rely on when conducting inter-satellite and satellite-to-ground laser communications. Generally, the distance of inter-satellite laser communications ranges from hundreds of kilometers to tens of thousands of kilometers. The general functional requirements for laser communication payloads are to have functions such as capture, tracking and pointing (i.e., Acqui sition, Tracking and Pointing-ATP). In order for laser payloads to achieve two-way communication, high-precision alignment is required, and the angular deviation is only allowed to be within a few micro-radians. On an in-orbit satellite, even the slightest vibration of the satellite's own attitude control will far exceed this range. Therefore, in laser communications at a distance of thousands of kilometers, capture and pointing are extremely technically difficult functions. A reasonable structural mechanism design and layout can effectively improve the reliability of the mechanism's capture and pointing performance.

[0003] Satellite Internet is in its infancy, and Internet constellations are generally planned to have tens of thousands of satellites. In order to improve launch efficiency and reduce launch costs, flat-panel satellite stacking is used for launch. On stacked flat-panel satellites, the laser communication ATP unit is used as an extravehicular component of the satellite, and its size and mass are strictly limited.

[0004] like Figure 1 As shown, a general laser communication payload ATP unit consists of three parts: a telescope, a two-dimensional turntable, and a rear optical path. The communication beam is received and emitted by the telescope. The beam received by the telescope generally passes through the Coode optical path through the pitch axis and azimuth axis of the two-dimensional turntable and enters the rear optical path. The common forms of two-dimensional turntables are T-type and U-type. The pitch axis and the azimuth axis are orthogonal, and the optical path passes through them in sequence. The rear optical path component is generally mounted behind the pitch axis or the azimuth axis, and the mounting surface is perpendicular to the pitch axis or the azimuth axis. The optical path is reversible, and the beam emitted by the rear optical path returns from the same path and is emitted through the telescope. However, conventional two-dimensional turntables adopt T-type and U-type forms, with a symmetrical layout, occupying a large space, a large rotation envelope, and it is difficult to miniaturize the height when locked, which is difficult to adapt to the lightweight and miniaturized requirements of flat-panel satellites for laser payloads. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a laser communication payload ATP structure suitable for flat-panel satellites.

[0006] The laser communication payload ATP structure suitable for a flat-panel satellite provided by the present invention comprises a telescope assembly, a pitch axis rotation assembly, an azimuth axis rotation assembly and a rear optical path assembly, wherein the pitch axis rotation assembly and the azimuth axis rotation assembly together constitute a two-dimensional turntable assembly;

[0007] The azimuth axis rotation assembly is horizontally and fixedly mounted on the rear optical path assembly, an end of the azimuth axis rotation assembly is fixedly connected to one side of the elevation axis rotation assembly, and an end of the elevation axis rotation assembly is fixedly connected to one side of the telescope assembly;

[0008] The axis of the azimuth axis rotation assembly is the azimuth axis of the two-dimensional turntable assembly, and the axis of the pitch axis rotation assembly is the pitch axis of the two-dimensional turntable assembly. The azimuth axis and the pitch axis are orthogonal to each other, and the pitch axis and the optical axis of the telescope assembly are orthogonal to each other.

[0009] The light passes through the telescope assembly, the pitch axis rotation assembly and the azimuth axis rotation assembly in sequence and then enters the rear optical path assembly.

[0010] Preferably, the telescope assembly comprises a telescope mount, a telescope primary mirror, a telescope secondary mirror and a first Coode mirror;

[0011] The telescope primary mirror, the telescope secondary mirror and the first Kude mirror are all installed inside the telescope mounting seat, and one side of the telescope mounting seat is fixedly connected to the pitch axis rotation assembly;

[0012] After the light enters the telescope assembly, it is reflected by the telescope primary mirror, the telescope secondary mirror and the first Coode mirror in sequence, and then is bent 90° and enters the pitch axis rotation assembly.

[0013] Preferably, the pitch axis rotation assembly comprises a pitch axis assembly, a pitch motor, a pitch axis mounting seat assembly and a second Kude mirror;

[0014] The pitch axis assembly, the pitch motor and the second Kude mirror are all installed inside the pitch axis mounting seat assembly, and one side of the pitch axis mounting seat assembly is fixedly connected to the azimuth axis rotation assembly;

[0015] The pitch shaft assembly is connected to the pitch motor, and an end of the pitch shaft assembly is fixedly connected to the telescope assembly;

[0016] The pitch motor and the pitch rotation axis assembly are provided with a hollow structure along the axial direction to form a pitch axis optical path. After the light reflected from the telescope assembly is incident on the pitch axis rotation assembly, it passes through the pitch axis optical path and is reflected 90° by the second Coode mirror before being incident on the azimuth axis rotation assembly.

[0017] Preferably, the pitch axis mounting seat assembly comprises a pitch motor mounting seat, a pitch auxiliary mounting seat and a pitch mounting base which are sequentially installed along the axial direction;

[0018] The pitch motor is installed in the pitch motor mounting seat, and one side of the pitch auxiliary mounting seat is fixedly connected to the azimuth axis rotation assembly;

[0019] The pitch mounting base is mounted on the end of the pitch auxiliary mounting base, and the second Kude mirror is mounted on the pitch mounting base and is located inside the pitch auxiliary mounting base.

[0020] Preferably, the azimuth axis rotation assembly comprises an azimuth rotation axis assembly, a third Coude mirror, an azimuth motor and an azimuth axis mounting seat assembly;

[0021] The azimuth rotating shaft assembly, the third Kude mirror and the azimuth motor are all installed inside the azimuth shaft mounting seat assembly, and the azimuth shaft mounting seat assembly is fixedly mounted on the rear optical path assembly;

[0022] The azimuth rotating shaft assembly is connected to the azimuth motor, and the end of the azimuth rotating shaft assembly is fixedly connected to the pitch axis rotating assembly;

[0023] The azimuth motor and the azimuth rotating shaft assembly are provided with a hollow structure along the axial direction to form an azimuth axis optical path. The light reflected from the pitch axis rotating assembly enters the azimuth axis rotating assembly, passes through the azimuth axis optical path, and is reflected by the third Coode mirror before entering the rear optical path assembly.

[0024] Preferably, the azimuth axis mounting seat assembly comprises an azimuth motor mounting seat, an azimuth auxiliary mounting seat and an azimuth mounting base which are sequentially installed along the axial direction;

[0025] The azimuth motor is installed in the azimuth motor mounting seat, and the azimuth auxiliary mounting seat and the azimuth motor mounting seat are both fixedly mounted on the top of the rear optical path component;

[0026] The azimuth mounting base is mounted on the end of the azimuth auxiliary mounting base, and the third Coude mirror is mounted on the azimuth mounting base and is located inside the azimuth auxiliary mounting base.

[0027] Preferably, the two-dimensional turntable assembly includes a locking state, and in the locking state, the telescope assembly, the pitch axis rotation assembly and the azimuth axis rotation assembly are all horizontally arranged on the rear optical path assembly.

[0028] Preferably, when in the locked state, the plane where the azimuth axis, the elevation axis and the optical axis of the telescope assembly are located is parallel to the mounting surface of the rear optical path assembly.

[0029] Preferably, the azimuth axis rotation assembly is mounted at a corner on the mounting surface of the rear optical path assembly;

[0030] When in the locked state, in the projection of the top-down angle, the telescope assembly, the elevation axis rotation assembly and the azimuth axis rotation assembly are all arranged along the edge of the mounting surface of the rear optical path assembly to form a P shape.

[0031] Preferably, a star sensor is provided on the mounting surface of the rear optical path component, and when in a locked state, the azimuth axis rotation component and the star sensor are arranged in parallel in the projection along the axial direction of the azimuth axis;

[0032] In the projection along the axial direction of the pitch axis, the telescope assembly and the star sensor are arranged in parallel, and the light incident end of the telescope assembly faces the star sensor.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention has a simple structure and is easy to operate. The telescope assembly, the pitch axis rotation assembly, and the azimuth axis rotation assembly are orthogonally connected in sequence and fixed on the rear optical path assembly. When the mechanism is locked, it can be installed horizontally and integrated with the rear optical path assembly. The mechanism is more miniaturized and lightweight, and the installation and adjustment work is simpler. The mechanism has a stronger adaptability to the vibration during rocket launch, making the capture and aiming performance of the mechanism more reliable after entering orbit.

[0035] 2. In the present invention, the light directly enters the rear optical path through the reflector of the telescope assembly, and the turntable and the telescope adopt a P-type configuration, which can make the overall mechanism in the locked state more compact, further realizing miniaturization and lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 It is a schematic diagram of the optical path principle of a single ATP laser communication payload in the prior art;

[0038] Figure 2 It is a schematic diagram of the overall structure of the present invention in a locked state;

[0039] Figure 3 It is a structural schematic diagram of the present invention in a locked state with the auxiliary mounting seat hidden;

[0040] Figure 4 It is a structural schematic diagram of the present invention in a locked state with the motor mounting seat hidden;

[0041] Figure 5 It is a schematic diagram of the overall structure of the present invention in an unlocked state.

[0042] The figure shows:

[0043] Telescope assembly 1 Pitch auxiliary mounting seat 26

[0044] Telescope primary mirror 11 Azimuth axis rotation assembly 3

[0045] First Kude mirror 12 azimuth shaft assembly 31

[0046] Pitch axis rotation assembly 2 Azimuth motor mounting seat 32

[0047] Pitch axis assembly 21 Third Kude mirror 33

[0048] Pitch motor mounting seat 22 Azimuth mounting base 34

[0049] Second Kude mirror 23 azimuth motor 35

[0050] Pitch mounting base 24 Azimuth auxiliary mounting base 36

[0051] Pitch motor 25 Rear optical path component 4 DETAILED DESCRIPTION

[0052] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0053] The present invention discloses a laser communication payload ATP structure suitable for flat-panel satellites. The turntable form of the traditional ATP single machine is simplified through innovative mechanism structure design and layout. In order to adapt to stacked flat-panel satellites, a P-type layout of a two-dimensional turntable and a telescope is specifically adopted, which greatly reduces the volume and locking height of the single machine, improves the processability and reliability of the whole machine, and makes it easier to miniaturize and lighten the ATP mechanism.

[0054] According to the laser communication payload ATP structure suitable for flat-panel satellites provided by the present invention, Figure 2-4 As shown, it includes a telescope assembly 1, a pitch axis rotation assembly 2, an azimuth axis rotation assembly 3 and a rear optical path assembly 4, wherein the pitch axis rotation assembly 2 and the azimuth axis rotation assembly 3 together constitute a two-dimensional turntable assembly; the azimuth axis rotation assembly 3 is horizontally and fixedly installed on the rear optical path assembly 4, an end of the azimuth axis rotation assembly 3 is fixedly connected to one side of the pitch axis rotation assembly 2, and an end of the pitch axis rotation assembly 2 is fixedly connected to one side of the telescope assembly 1;

[0055] The axis of the azimuth axis rotation component 3 is the azimuth axis of the two-dimensional turntable component, and the axis of the pitch axis rotation component 2 is the pitch axis of the two-dimensional turntable component. The azimuth axis is orthogonal to the pitch axis, and the pitch axis is orthogonal to the optical axis of the telescope component 1. The light passes through the telescope component 1, the pitch axis rotation component 2, and the azimuth axis rotation component 3 in sequence and then enters the rear optical path component 4. The two-dimensional turntable component includes a locking state. When in the locking state, the telescope component 1, the pitch axis rotation component 2, and the azimuth axis rotation component 3 are all horizontally arranged on the rear optical path component 4, and the planes where the azimuth axis, the pitch axis, and the optical axis of the telescope component 1 are located are parallel to the mounting surface of the rear optical path component 4.

[0056] In a preferred embodiment, Figure 2 , 3 As shown, the azimuth axis rotation assembly 3 is installed at the corner of the mounting surface of the rear optical path assembly 4; when in the locked state, in the projection of the top view angle, the telescope assembly 1, the pitch axis rotation assembly 2 and the azimuth axis rotation assembly 3 are all arranged along the edge of the mounting surface of the rear optical path assembly 4 to form a P shape, and in the projection along the axial direction of the azimuth axis, the azimuth axis rotation assembly 3 and the star sensor on the rear optical path assembly 4 are arranged side by side; in the projection along the axial direction of the pitch axis, the telescope assembly 1 and the star sensor are arranged side by side, and the light incident end of the telescope assembly 1 faces the star sensor. Through the P-type layout of the two-dimensional turntable and the telescope, it can be integrated with the rear optical path assembly in the locked state, greatly reducing the volume and locking height of the single machine.

[0057] Preferably, the telescope assembly 1 includes a telescope mounting seat, a telescope primary mirror 11, a telescope secondary mirror and a first Coode mirror 12; the telescope primary mirror 11, the telescope secondary mirror and the first Coode mirror 12 are all installed inside the telescope mounting seat, and one side of the telescope mounting seat is fixedly connected to the pitch axis rotation assembly 2; after the light enters the telescope assembly 1, it is reflected by the telescope primary mirror 11, the telescope secondary mirror and the first Coode mirror 12 in turn, and then is turned 90° before entering the pitch axis rotation assembly 2.

[0058] The pitch axis rotation assembly 2 includes a pitch axis assembly 21, a pitch motor 25, a pitch axis mounting seat assembly and a second Coude mirror 23; the pitch axis assembly 21, the pitch motor 25 and the second Coude mirror 23 are all installed inside the pitch axis mounting seat assembly, and one side of the pitch axis mounting seat assembly is fixedly connected to the azimuth axis rotation assembly 3; the pitch axis assembly 21 is connected to the pitch motor 25, and the end of the pitch axis assembly 21 is fixedly connected to the telescope assembly 1; the pitch motor 25 and the pitch axis assembly 21 are axially provided with a hollow structure to form a pitch axis optical path, and the light reflected from the telescope assembly 1 enters the pitch axis rotation assembly 2, passes through the pitch axis optical path, and is reflected 90° by the second Coude mirror 23 before entering the azimuth axis rotation assembly 3. The pitch axis mounting seat assembly includes a pitch motor mounting seat 22, a pitch auxiliary mounting seat 26 and a pitch mounting base 24 which are installed in sequence along the axial direction; the pitch motor 25 is installed in the pitch motor mounting seat 22, and one side of the pitch auxiliary mounting seat 26 is fixedly connected to the azimuth axis rotation assembly 3; the pitch mounting base 24 is installed at the end of the pitch auxiliary mounting seat 26, and the second Kude mirror 23 is installed on the pitch mounting base 24 and is located inside the pitch auxiliary mounting seat 26.

[0059] The azimuth axis rotation assembly 3 includes an azimuth axis assembly 31, a third Coude mirror 33, an azimuth motor 35 and an azimuth axis mounting seat assembly; the azimuth axis assembly 31, the third Coude mirror 33 and the azimuth motor 35 are all installed inside the azimuth axis mounting seat assembly, and the azimuth axis mounting seat assembly is fixedly installed on the rear optical path assembly 4; the azimuth axis assembly 31 is connected to the azimuth motor 35, and the end of the azimuth axis assembly 31 is fixedly connected to the pitch axis rotation assembly 2; the azimuth motor 35 and the azimuth axis assembly 31 are axially provided with a hollow structure to form an azimuth axis optical path, and the light reflected from the pitch axis rotation assembly 2 enters the azimuth axis rotation assembly 3, passes through the azimuth axis optical path, and is reflected by the third Coude mirror 33 and then enters the rear optical path assembly 4. The azimuth axis mounting seat assembly includes an azimuth motor mounting seat 32, an azimuth auxiliary mounting seat 36 and an azimuth mounting base 34 which are installed in sequence along the axial direction; the azimuth motor 35 is installed in the azimuth motor mounting seat 32, and the azimuth auxiliary mounting seat 36 and the azimuth motor mounting seat 32 are both fixedly mounted on the top of the rear optical path assembly 4; the azimuth mounting base 34 is installed at the end of the azimuth auxiliary mounting seat 36, and the third Kude mirror 33 is installed on the azimuth mounting base 34 and is located inside the azimuth auxiliary mounting seat 36.

[0060] Example 1

[0061] The structure of this embodiment mainly consists of the following parts:

[0062] Telescope component 1: responsible for sending and receiving light beams.

[0063] Two-dimensional turntable assembly: The two-dimensional turntable and the telescope assembly 1 form a P-type layout, providing a large-range two-dimensional pointing function for the telescope. One end face of the pitch axis is connected to the telescope assembly 1, and the side face of the other end is connected to one end face of the azimuth axis. The azimuth axis is fixed on the mounting surface of the rear optical path assembly 4 as a whole, so that the light between the telescope and the rear optical path can be transmitted to each other through the hollow pitch axis and azimuth axis. In particular, the P-type described in this embodiment means that the azimuth axis, pitch axis, and telescope optical axis of the turntable are on the same plane, and the azimuth axis and the pitch axis, and the pitch axis and the telescope optical axis are orthogonal. In particular, the P-type turntable assembly described in this embodiment is horizontally integrated with the rear optical path assembly 4 in the locked state, and the mounting surface of the rear optical path assembly 4 is parallel to the plane where the azimuth axis, the pitch axis, and the telescope optical axis are located. When unlocked, the pitch axis drives the telescope to rotate 90° in the direction away from the mounting surface, providing rotation space within the working range for the two rotating axes.

[0064] Post-optical path components: responsible for the splitting and calibration of the light beam.

[0065] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0066] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A laser communication payload ATP structure suitable for flat-panel satellites, characterized in that: It comprises a telescope assembly (1), a pitch axis rotation assembly (2), an azimuth axis rotation assembly (3) and a rear optical path assembly (4), wherein the pitch axis rotation assembly (2) and the azimuth axis rotation assembly (3) together form a two-dimensional turntable assembly; The azimuth axis rotation assembly (3) is horizontally and fixedly mounted on the rear optical path assembly (4), an end of the azimuth axis rotation assembly (3) is fixedly connected to one side of the elevation axis rotation assembly (2), and an end of the elevation axis rotation assembly (2) is fixedly connected to one side of the telescope assembly (1); The axis of the azimuth axis rotation component (3) is the azimuth axis of the two-dimensional turntable component, and the axis of the pitch axis rotation component (2) is the pitch axis of the two-dimensional turntable component. The azimuth axis and the pitch axis are orthogonal to each other, and the pitch axis and the optical axis of the telescope component (1) are orthogonal to each other. The light rays sequentially pass through the telescope assembly (1), the pitch axis rotation assembly (2) and the azimuth axis rotation assembly (3) and then enter the rear optical path assembly (4).

2. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 1 is characterized in that: The telescope assembly (1) comprises a telescope mounting seat, a telescope primary mirror (11), a telescope secondary mirror and a first Coode mirror (12); The telescope primary mirror (11), the telescope secondary mirror and the first Kude mirror (12) are all installed inside the telescope mounting seat, and one side of the telescope mounting seat is fixedly connected to the pitch axis rotation assembly (2); After the light enters the telescope assembly (1), it is reflected by the telescope primary mirror (11), the telescope secondary mirror and the first Coode mirror (12) in sequence, and then is folded 90 degrees before entering the pitch axis rotation assembly (2).

3. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 1 is characterized in that: The pitch axis rotation assembly (2) comprises a pitch rotation axis assembly (21), a pitch motor (25), a pitch axis mounting seat assembly and a second Kude mirror (23); The pitch axis assembly (21), the pitch motor (25) and the second Kude mirror (23) are all installed inside the pitch axis mounting seat assembly, and one side of the pitch axis mounting seat assembly is fixedly connected to the azimuth axis rotation assembly (3); The pitch shaft assembly (21) is connected to the pitch motor (25), and an end of the pitch shaft assembly (21) is fixedly connected to the telescope assembly (1); The pitch motor (25) and the pitch rotation axis assembly (21) are provided with a hollow structure along the axial direction to form a pitch axis optical path. After the light reflected from the telescope assembly (1) enters the pitch axis rotation assembly (2), it passes through the pitch axis optical path and is reflected 90 degrees by the second Coudre mirror (23) before entering the azimuth axis rotation assembly (3).

4. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 3 is characterized in that: The pitch axis mounting seat assembly comprises a pitch motor mounting seat (22), a pitch auxiliary mounting seat (26) and a pitch mounting base (24) which are sequentially mounted along the axial direction; The pitch motor (25) is installed in the pitch motor mounting seat (22), and one side of the pitch auxiliary mounting seat (26) is fixedly connected to the azimuth axis rotation assembly (3); The pitch mounting base (24) is mounted on the end of the pitch auxiliary mounting base (26), and the second Kude mirror (23) is mounted on the pitch mounting base (24) and is located inside the pitch auxiliary mounting base (26).

5. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 1 is characterized in that: The azimuth axis rotation assembly (3) comprises an azimuth rotation axis assembly (31), a third Kude mirror (33), an azimuth motor (35) and an azimuth axis mounting seat assembly; The azimuth rotating shaft assembly (31), the third Kude mirror (33) and the azimuth motor (35) are all installed inside the azimuth shaft mounting seat assembly, and the azimuth shaft mounting seat assembly is fixedly mounted on the rear optical path assembly (4); The azimuth rotation axis assembly (31) is connected to the azimuth motor (35), and an end of the azimuth rotation axis assembly (31) is fixedly connected to the pitch axis rotation assembly (2); The azimuth motor (35) and the azimuth rotating shaft assembly (31) are provided with a hollow structure along the axial direction to form an azimuth axis optical path. The light reflected from the pitch axis rotating assembly (2) enters the azimuth axis rotating assembly (3), passes through the azimuth axis optical path, is reflected by the third Kudet mirror (33), and then enters the rear optical path assembly (4).

6. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 5 is characterized in that: The azimuth axis mounting seat assembly comprises an azimuth motor mounting seat (32), an azimuth auxiliary mounting seat (36) and an azimuth mounting base (34) which are sequentially mounted along the axial direction; The azimuth motor (35) is installed in the azimuth motor mounting seat (32), and the azimuth auxiliary mounting seat (36) and the azimuth motor mounting seat (32) are both fixedly mounted on the top of the rear optical path component (4); The azimuth mounting base (34) is mounted on the end of the azimuth auxiliary mounting base (36), and the third Kude mirror (33) is mounted on the azimuth mounting base (34) and is located inside the azimuth auxiliary mounting base (36).

7. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 1 is characterized in that: The two-dimensional turntable assembly includes a locking state. When in the locking state, the telescope assembly (1), the pitch axis rotation assembly (2) and the azimuth axis rotation assembly (3) are all arranged horizontally on the rear optical path assembly (4).

8. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 7 is characterized in that: When in the locked state, the planes on which the azimuth axis, the elevation axis and the optical axis of the telescope assembly (1) are located are all parallel to the mounting surface of the rear optical path assembly (4).

9. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 7, characterized in that: The azimuth axis rotation component (3) is installed at a corner on the installation surface of the rear optical path component (4); When in a locked state, in a projection at a top-down angle, the telescope assembly (1), the elevation axis rotation assembly (2) and the azimuth axis rotation assembly (3) are all arranged along the edge of the mounting surface of the rear optical path assembly (4) to form a P shape.

10. The laser communication payload ATP structure suitable for flat-panel satellites according to claim 9, characterized in that: A star sensor is provided on the mounting surface of the rear optical path component (4), and when in a locked state, the azimuth axis rotation component (3) and the star sensor are arranged in parallel in the projection along the axial direction of the azimuth axis; In the projection along the axial direction of the pitch axis, the telescope assembly (1) and the star sensor are arranged in parallel, and the light incident end of the telescope assembly (1) faces the star sensor.

Images