Rotary radar and unmanned aerial vehicle

Abstract

The invention discloses a rotary radar and an unmanned aerial vehicle. The rotation radar comprises a rotation driving member; the antenna assembly is connected with the rotation driving piece, the rotation driving piece is used for driving the antenna assembly to rotate, and the antenna assembly is provided with a first light-transmitting channel and a second light-transmitting channel; the first grating sensor and the second grating sensor are installed on the antenna assembly, the first grating sensor comprises a first light emitting tube and a first light receiving tube, first light emitted by the first light emitting tube irradiates the first light receiving tube through the grating code disc, and the second grating sensor comprises a second light emitting tube and a second light receiving tube; second light emitted by the second light emitting tube irradiates the second light receiving tube through the grating code disc, the first light emitting tube and the first light receiving tube are arranged on the outer sides of the two opposite ends of the first light transmitting channel respectively, and the second light emitting tube and the second light receiving tube are arranged on the outer sides of the two opposite ends of the second light transmitting channel respectively. According to the rotation radar, the reliability of positioning and sensing the rotation angle of the antenna assembly is improved.

Description

Technical Field

[0001] This application relates to the field of radar, and in particular to a rotating radar and an unmanned aerial vehicle (UAV). Background Technology

[0002] Rotating radar installed on drones needs to know its own rotation angle to determine the direction of the object being detected. In related technologies, rotating radar includes two sets of grating sensors, each playing its own role in determining the rotation angle.

[0003] However, when two sets of grating sensors are placed adjacent to each other, they are prone to mutual optical signal interference, which makes it easy for the rotating radar to make misjudgments when determining the rotation angle. Summary of the Invention

[0004] This application provides a rotating radar and a drone, which improves the reliability of rotating radar when determining rotation angle.

[0005] In a first aspect, embodiments of this application provide a rotating radar, comprising: a rotation drive; an antenna assembly connected to the rotation drive, the rotation drive being used to drive the antenna assembly to rotate, the antenna assembly having a first light-transmitting channel and a second light-transmitting channel; a first grating sensor and a second grating sensor mounted on the antenna assembly, the first grating sensor including a first light emitting tube and a first light receiving tube, a first light emitted by the first light emitting tube passing through a grating code disk and illuminating the first light receiving tube, the second grating sensor including a second light emitting tube and a second light receiving tube, a second light emitted by the second light emitting tube passing through the grating code disk and illuminating the second light receiving tube, the first light emitting tube and the first light receiving tube being respectively disposed on the outer sides of opposite ends of the first light-transmitting channel, and the second light emitting tube and the second light receiving tube being respectively disposed on the outer sides of opposite ends of the second light-transmitting channel.

[0006] According to the aforementioned embodiments of the first aspect of this application, the first grating sensor cooperates with the grating code disk for angle detection; the second grating sensor cooperates with the grating code disk for zero-point detection.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the grating code disk is provided with a first opening and a grating structure arranged in a ring. The first light emitted by the first light emitting tube passes through the grating structure and shines on the first light receiving tube for angle detection. When the antenna assembly is rotated to a preset position, the second light emitted by the second light emitting tube passes through the first opening and shines on the second light receiving tube for zero-point detection.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the first light-transmitting channel and the second light-transmitting channel are arranged side by side and parallel to each other.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the antenna assembly includes a shielding portion disposed between the first light emitting tube and the first light receiving tube, and disposed between the second light emitting tube and the second light receiving tube, wherein the first light transmission channel and the second light transmission channel are disposed in the shielding portion.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the antenna assembly includes an antenna bracket and an antenna circuit board. The antenna bracket is connected to the rotation drive member, the antenna circuit board is mounted on the antenna bracket, the shielding portion is located on the antenna bracket, and the first light-transmitting channel and the second light-transmitting channel are formed by the antenna circuit board and the shielding portion.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the antenna bracket has a cavity on one side surface facing the antenna circuit board, the antenna circuit board includes an exposed portion extending outward relative to the antenna bracket, one of the first light emitting tube and the first light receiving tube is located in the cavity and the other is located in the exposed portion, one of the second light emitting tube and the second light receiving tube is located in the cavity and the other is located in the exposed portion.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the first optical receiver tube and the second optical receiver tube are located inside the cavity.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the shielding portion is provided with a first groove and a second groove on the side facing the antenna circuit board, the inner wall of the first groove and the antenna circuit board enclose to form the first light-transmitting channel, and the inner wall of the second groove and the antenna circuit board enclose to form the second light-transmitting channel.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the first light emitting tube and the second light emitting tube are side-emitting structures and are mounted on the antenna circuit board at the bottom, and the first light receiving tube and the second light receiving tube are side-receiving structures and are mounted on the antenna circuit board at the bottom.

[0015] Secondly, embodiments of this application provide an unmanned aerial vehicle (UAV) comprising: a fuselage; and a rotating radar according to any of the foregoing embodiments of the first aspect of this application, wherein the rotating radar is mounted on the fuselage.

[0016] According to an embodiment of this application, the rotating radar has an antenna assembly with a first light-transmitting channel and a second light-transmitting channel. The rotating radar includes a first grating sensor and a second grating sensor mounted on the antenna assembly. The first grating sensor includes a first light emitting tube and a first light receiving tube, and the second grating sensor includes a second light emitting tube and a second light receiving tube. The first and second grating sensors each perform their respective functions to enable the rotating radar to locate and sense the rotation angle of the antenna assembly. The first light emitting tube and the first light receiving tube are respectively located on the outer sides of opposite ends of the first light-transmitting channel, and the second light emitting tube and the second light receiving tube are respectively located on the outer sides of opposite ends of the second light-transmitting channel. Therefore, the first grating sensor transmits light through the first light-transmitting channel, and the second grating sensor transmits light through the second light-transmitting channel. The separate first and second light-transmitting channels reduce light interference between the first and second grating sensors. Even with the first and second grating sensors arranged close together, the risk of false triggering and false sensing is reduced, improving the reliability of locating and sensing the rotation angle of the antenna assembly, and ensuring the compact installation of the sensor components within the rotating radar. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a perspective view of an embodiment of the rotating radar of this application;

[0019] Figure 2 This is an exploded perspective view of an embodiment of the rotating radar of this application;

[0020] Figure 3 This is a bottom view of the antenna assembly and grating code disk in one embodiment of the rotating radar of this application;

[0021] Figure 4 This is a cross-sectional schematic diagram of the antenna assembly in one embodiment of the rotating radar of this application;

[0022] Figure 5 This is a three-dimensional exploded view of the antenna assembly in one embodiment of the rotating radar of this application;

[0023] Figure 6 for Figure 5 A magnified view of a portion of region B in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-Rotating Radar;

[0026] 110 - Rotation drive component;

[0027] 120 - Antenna assembly; T1 - First light-transmitting channel; T2 - Second light-transmitting channel; 121 - Antenna bracket; P1 - Shielding part; P11 - First groove; P12 - Second groove; C1 - Cavity; 122 - Antenna circuit board; 1221 - Exposed part;

[0028] 130 - First grating sensor; 131 - First light emitter; 132 - First light receiver;

[0029] 140 - Second grating sensor; 141 - Second light emitter; 142 - Second light receiver;

[0030] 150 - Grating code disk; 151 - First opening; 152 - Grating structure;

[0031] 160 - Base.

[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0036] Figure 1 , Figure 2 These are a perspective view and an exploded perspective view of an embodiment of the rotating radar of this application, respectively. The rotating radar 100 includes a rotation drive 110, an antenna assembly 120, a first grating sensor 130, and a second grating sensor 140. The antenna assembly 120 is connected to the rotation drive 110, and the rotation drive 110 is used to drive the antenna assembly 120 to rotate.

[0037] Figure 3 , Figure 4 The images show a bottom view and a cross-sectional view of the antenna assembly and grating code disk in one embodiment of the rotating radar of this application, respectively. Figure 3 The middle AA line shows Figure 4 The cross-sectional area is defined. The antenna assembly 120 has a first light-transmitting channel T1 and a second light-transmitting channel T2. A first grating sensor 130 and a second grating sensor 140 are mounted on the antenna assembly 120. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132. A first light ray emitted from the first light emitting tube 131 passes through a grating code disk 150 and illuminates the first light receiving tube 132. The second grating sensor 140 includes a second light emitting tube 141 and a second light receiving tube 142. A second light ray emitted from the second light emitting tube 141 passes through a grating code disk 150 and illuminates the second light receiving tube 142. The first light emitting tube 131 and the first light receiving tube 132 are respectively located on the outer sides of opposite ends of the first light-transmitting channel T1. The second light emitting tube 141 and the second light receiving tube 142 are respectively located on the outer sides of opposite ends of the second light-transmitting channel T2.

[0038] According to an embodiment of this application, the rotating radar 100 has an antenna assembly 120 with a first light-transmitting channel T1 and a second light-transmitting channel T2. The rotating radar 100 includes a first grating sensor 130 and a second grating sensor 140 mounted on the antenna assembly 120. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132, and the second grating sensor 140 includes a second light emitting tube 141 and a second light receiving tube 142. The first grating sensor 130 and the second grating sensor 140 each perform their respective functions to locate and sense the rotation angle of the antenna assembly 120. The first light emitting tube 131 and the first light receiving tube 132 are respectively located on the outer sides of opposite ends of the first light-transmitting channel T1, and the second light emitting tube 141 and the second light receiving tube 142 are respectively located on the outer sides of opposite ends of the second light-transmitting channel T2. Therefore, the first grating sensor 130 transmits light through the first light-transmitting channel T1, and the second grating sensor 140 transmits light through the second light-transmitting channel T2. The separate first light-transmitting channel T1 and the second light-transmitting channel T2 can reduce the light interference between the first grating sensor 130 and the second grating sensor 140. The close proximity arrangement of the first grating sensor 130 and the second grating sensor 140 can also reduce the risk of false triggering and false sensing, improve the reliability of the rotation angle positioning and sensing of the antenna assembly 120, and ensure the compactness of the sensor installation inside the rotating radar 100.

[0039] In some embodiments, the rotating radar 100 further includes a base 160, on which a rotation drive 110 is mounted. A grating code disk 150 may be mounted on the base 160.

[0040] In some embodiments, the first grating sensor 130 cooperates with the grating code disk 150 for angle detection. The second grating sensor 140 cooperates with the grating code disk 150 for null point detection. By combining angle detection and null point detection, the rotation angle of the antenna assembly 120 can be accurately located. Null point detection allows the antenna assembly 120 to reset after each rotation, reducing cumulative errors.

[0041] like Figure 3 In some embodiments, the grating code disk 150 is provided with a first opening 151 and annularly arranged grating structures 152. The grating structure 152 includes a plurality of annularly arranged through holes, the size of the plurality of through holes and the spacing between adjacent through holes being the same.

[0042] The first light emitted by the first light emitting tube 131 passes through the grating structure 152 and shines onto the first light receiving tube 132 for angle detection. When the antenna assembly 120 rotates, the through holes and the blocking areas between the through holes of the grating structure 152 alternately allow the first light to pass through and be blocked. The first light receiving tube 132 can count the intermittently received first light rays, match the count data with the rotation angle, and thus obtain the rotation angle.

[0043] When the antenna assembly 120 rotates to a preset position, the second light emitted by the second light emitting tube 141 shines through the first opening 151 onto the second light receiving tube 142 for null detection. When the antenna assembly 120 rotates to a position other than the initial preset position, the grating code disk 150 blocks the second light. Each time the antenna assembly 120 rotates to the preset position, the second light shines through the first opening 151 onto the second light receiving tube 142. This preset position corresponds to the null position, thereby realizing the null detection of the rotation angle of the antenna assembly 120.

[0044] like Figure 4 In some embodiments, the first light-transmitting channel T1 and the second light-transmitting channel T2 are arranged side by side and parallel to each other. On the one hand, the side-by-side arrangement of the first light-transmitting channel T1 and the second light-transmitting channel T2 allows for a more compact arrangement of the first grating sensor 130 and the second grating sensor 140. On the other hand, the parallel arrangement of the first light-transmitting channel T1 and the second light-transmitting channel T2 can further reduce light interference between the two channels, thereby further improving the reliability of positioning and sensing the rotation angle of the antenna assembly 120.

[0045] In some embodiments, the first light emitting tube 131 and the second light emitting tube 141 are infrared light emitting tubes, and the first light receiving tube 132 and the second light receiving tube 142 are infrared light receiving tubes. In other embodiments, the first light emitting tube 131 and the second light emitting tube 141 may also be light emitting tubes that emit other forms of light, and the type of light sensed by the first light receiving tube 132 is consistent with the type of light emitted by the first light emitting tube 131, and the type of light sensed by the second light receiving tube 142 is consistent with the type of light emitted by the second light emitting tube 141. For example, the first light emitting tube 131 and the second light emitting tube 141 are visible light emitting tubes, and the first light receiving tube 132 and the second light receiving tube 142 are visible light receiving tubes. In some embodiments, the first light emitting tube 131 and the second light emitting tube 141 emit different types of light; for example, one of the first light emitting tube 131 and the second light emitting tube 141 is an infrared light emitting tube, and the other is a visible light receiving tube, thereby further reducing the interference between the first grating sensor 130 and the second grating sensor 140.

[0046] Figure 5This is an exploded perspective view of the antenna assembly in one embodiment of the rotating radar of this application. Figure 6 for Figure 5 A magnified view of a portion of region B in the middle.

[0047] In some embodiments, the antenna assembly 120 includes a shielding portion P1. The shielding portion P1 is disposed between the first light emitting tube 131 and the first light receiving tube 132, and between the second light emitting tube 141 and the second light receiving tube 142. A first light transmission channel T1 and a second light transmission channel T2 are disposed in the shielding portion P1.

[0048] The shielding part P1 is a light-shielding structure, so that during the operation of the rotating radar 100, the first light emitted by the first light emitting tube 131 will be blocked by the shielding part P1 and can only pass through the first light transmission channel T1, and the second light emitted by the second light emitting tube 141 will be blocked by the shielding part P1 and can only pass through the second light transmission channel T2, thereby reducing the interference when the first light receiving tube 132 and the second light receiving tube 142 receive light respectively.

[0049] In some embodiments, the antenna assembly 120 includes an antenna bracket 121 and an antenna circuit board 122. The antenna bracket 121 is connected to a rotation drive 110, and the antenna circuit board 122 is mounted on the antenna bracket 121. An antenna array is arranged on the antenna circuit board 122. A blocking portion P1 is located on the antenna bracket 121, and a first light-transmitting channel T1 and a second light-transmitting channel T2 are formed by the antenna circuit board 122 and the blocking portion P1.

[0050] In the above embodiment, the antenna circuit board 122 and the shielding part P1 enclose each other to form a first light-transmitting channel T1 and a second light-transmitting channel T2, so that one side of the first light-transmitting channel T1 and the second light-transmitting channel T2 is in close contact with the surface of the antenna circuit board 122. On the one hand, this ensures the compactness of the antenna assembly 120 structure, and on the other hand, it allows the surface of the antenna circuit board 122 to be used as a reference plane, which facilitates the alignment of the first grating sensor 130, the second grating sensor 140 with the first light-transmitting channel T1 and the second light-transmitting channel T2.

[0051] In some embodiments, the antenna bracket 121 has a cavity C1 on one side surface facing the antenna circuit board 122, and the antenna circuit board 122 includes an exposed portion 1221 extending outward relative to the antenna bracket 121.

[0052] One of the first light emitting tube 131 and the first light receiving tube 132 is located inside the cavity C1, and the other is located in the exposed part 1221.

[0053] One of the second light emitting tube 141 and the second light receiving tube 142 is located inside the cavity C1, and the other is located in the exposed part 1221.

[0054] In the above embodiment, one of the first light emitting tube 131 and the first light receiving tube 132 is located in the cavity C1, and one of the second light emitting tube 141 and the second light receiving tube 142 is located in the cavity C1, so that at least a portion of the first grating sensor 130 and at least a portion of the second grating sensor 140 are located in the cavity C1 and protected by the antenna bracket 121 and the antenna circuit board 122.

[0055] In the above embodiment, the first light receiver 132 and the second light receiver 142 are located inside the cavity C1. The first light emitter 131 and the second light emitter 141 are located in the exposed portion 1221. Since the first light receiver 132 and the second light receiver 142 are located inside the relatively dark cavity C1, the influence of ambient light on the light sensing of the first light receiver 132 and the second light receiver 142 can be reduced, thereby improving the accuracy of light sensing by the first light receiver 132 and the second light receiver 142.

[0056] In the above embodiment, the shielding part P1 is provided with a first groove P11 and a second groove P12 on the side facing the antenna circuit board 122. The inner wall of the first groove P11 and the antenna circuit board 122 surround each other to form a first light-transmitting channel T1, and the inner wall of the second groove P12 and the antenna circuit board 122 surround each other to form a second light-transmitting channel T2.

[0057] In the above embodiment, the first groove P11 and the second groove P12 of the shielding part P1 are enclosed with the antenna circuit board 122 to form the first light-transmitting channel T1 and the second light-transmitting channel T2. The first groove P11 and the second groove P12 are easy to form in the shielding part P1, thereby reducing the process difficulty of forming the first light-transmitting channel T1 and the second light-transmitting channel T2 in the rotating radar 100, and making it easier to reduce the manufacturing cost of the rotating radar 100.

[0058] In this embodiment, the first optical transmitter 131 and the second optical transmitter 141 are side-emitting structures and are mounted on the antenna circuit board 122 at their bottoms. The first optical receiver 132 and the second optical receiver 142 are side-receiving structures and are also mounted on the antenna circuit board 122 at their bottoms. By adopting the side-emitting structures of the first optical transmitter 131 and the second optical transmitter 141, and the side-receiving structures of the first optical receiver 132 and the second optical receiver 142, the first optical transmitter 131, the second optical transmitter 141, the first optical receiver 132, and the second optical receiver 142 can be directly mounted on the antenna circuit board 122 without the need for intermediate components, further improving the compactness of the structure.

[0059] Although not shown in the figures, in some embodiments, the rotating radar 100 may also include a housing that covers the antenna assembly 120.

[0060] This application also provides a drone, which includes a fuselage and a rotating radar 100 according to any of the aforementioned embodiments, the rotating radar 100 being mounted on the fuselage. The rotating radar 100 includes a rotation drive 110, an antenna assembly 120, a first grating sensor 130, and a second grating sensor 140. The antenna assembly 120 is connected to the rotation drive 110, and the rotation drive 110 drives the antenna assembly 120 to rotate. The antenna assembly 120 has a first light transmission channel T1 and a second light transmission channel T2. The first grating sensor 130 and the second grating sensor 140 are mounted on the antenna assembly 120. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132. The first light emitted by the first light emitting tube 131 passes through a grating code disk 150 and illuminates the first light receiving tube 132. The second grating sensor 140 includes a second light emitting tube 141 and a second light receiving tube 142. The second light emitted by the second light emitting tube 141 passes through the grating code disk 150 and illuminates the second light receiving tube 142. The first light emitting tube 131 and the first light receiving tube 132 are respectively disposed on the outer sides of the opposite ends of the first light-transmitting channel T1. The second light emitting tube 141 and the second light receiving tube 142 are respectively disposed on the outer sides of the opposite ends of the second light-transmitting channel T2.

[0061] According to an embodiment of this application, the unmanned aerial vehicle (UAV) includes a rotating radar 100, wherein the antenna assembly 120 of the rotating radar 100 is provided with a first light-transmitting channel T1 and a second light-transmitting channel T2. The rotating radar 100 includes a first grating sensor 130 and a second grating sensor 140 mounted on the antenna assembly 120. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132, and the second grating sensor 140 includes a second light emitting tube 141 and a second light receiving tube 142. The first grating sensor 130 and the second grating sensor 140 each perform their respective functions to enable the rotating radar 100 to locate and sense the rotation angle of the antenna assembly 120. The first light emitting tube 131 and the first light receiving tube 132 are respectively disposed on the outer sides of opposite ends of the first light-transmitting channel T1, and the second light emitting tube 141 and the second light receiving tube 142 are respectively disposed on the outer sides of opposite ends of the second light-transmitting channel T2. Therefore, the first grating sensor 130 transmits light through the first light-transmitting channel T1, and the second grating sensor 140 transmits light through the second light-transmitting channel T2. The separate first light-transmitting channel T1 and the second light-transmitting channel T2 can reduce the light interference between the first grating sensor 130 and the second grating sensor 140. The close proximity arrangement of the first grating sensor 130 and the second grating sensor 140 can also reduce the risk of false triggering and false sensing, improve the reliability of the rotation angle positioning and sensing of the antenna assembly 120, and ensure the compactness of the sensor installation inside the rotating radar 100.

[0062] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A rotating radar, characterized in that, include: Rotation drive component; An antenna assembly is connected to the rotation drive, the rotation drive is used to drive the antenna assembly to rotate, and the antenna assembly is provided with a first light-transmitting channel and a second light-transmitting channel. A first grating sensor and a second grating sensor are mounted on the antenna assembly. The first grating sensor includes a first light emitting tube and a first light receiving tube. A first light emitting tube emits light through a grating code disk and illuminates the first light receiving tube. The second grating sensor includes a second light emitting tube and a second light receiving tube. A second light emitting tube emits light through the grating code disk and illuminates the second light receiving tube. The first light emitting tube and the first light receiving tube are respectively disposed on the outer sides of opposite ends of the first light-transmitting channel, and the second light emitting tube and the second light receiving tube are respectively disposed on the outer sides of opposite ends of the second light-transmitting channel.

2. The rotating radar as described in claim 1, characterized in that, The first grating sensor works in conjunction with the grating code disk for angle detection; the second grating sensor works in conjunction with the grating code disk for zero-point detection.

3. The rotating radar as described in claim 2, characterized in that, The grating code disk has a first opening and a ring-shaped arrangement of grating structures. The first light emitted by the first light emitter passes through the grating structure and illuminates the first light receiver for angle detection. When the antenna assembly is rotated to a preset position, the second light emitted by the second light emitting tube shines through the first opening onto the second light receiving tube for zero-point detection.

4. The rotating radar as described in claim 1, characterized in that, The first light-transmitting channel and the second light-transmitting channel are arranged side by side and parallel to each other.

5. The rotating radar as described in claim 1, characterized in that, The antenna assembly includes a shielding portion disposed between the first light emitting tube and the first light receiving tube, and disposed between the second light emitting tube and the second light receiving tube. The first light transmission channel and the second light transmission channel are disposed in the shielding portion.

6. The rotating radar as described in claim 5, characterized in that, The antenna assembly includes an antenna bracket and an antenna circuit board. The antenna bracket is connected to the rotation drive component, the antenna circuit board is mounted on the antenna bracket, the shielding part is located on the antenna bracket, and the first light-transmitting channel and the second light-transmitting channel are formed by the antenna circuit board and the shielding part.

7. The rotating radar as described in claim 6, characterized in that, The antenna bracket has a cavity on one side surface facing the antenna circuit board, and the antenna circuit board includes an exposed portion extending outward relative to the antenna bracket. One of the first light emitting tube and the first light receiving tube is located inside the cavity, and the other is located in the exposed portion. One of the second light emitting tube and the second light receiving tube is located inside the cavity, and the other is located in the exposed part.

8. The rotating radar as described in claim 7, characterized in that, The first optical receiver tube and the second optical receiver tube are located inside the cavity.

9. The rotating radar as described in claim 6, characterized in that, The shielding portion has a first groove and a second groove on the side facing the antenna circuit board. The inner wall of the first groove and the antenna circuit board enclose each other to form the first light-transmitting channel, and the inner wall of the second groove and the antenna circuit board enclose each other to form the second light-transmitting channel.

10. The rotating radar as described in claim 6, characterized in that, The first and second light emitting tubes are side-emitting structures and are mounted on the antenna circuit board at their bottoms. The first and second light receiving tubes are side-receiving structures and are mounted on the antenna circuit board at their bottoms.

11. A drone, characterized in that, include: body; as well as The rotating radar as described in any one of claims 1 to 10, wherein the rotating radar is mounted on the fuselage.

Images