CN211655062U

CN211655062U - Antenna housing, radar and movable platform

Info

Publication number: CN211655062U
Application number: CN202020372153.XU
Authority: CN
Inventors: 唐照成; 王春明
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-10-09
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses an antenna house, radar and movable platform. The antenna housing is formed with an accommodation space for accommodating the antenna assembly, and includes a top wall, a side wall structure, and a bottom wall. The side wall structure connects the bottom wall and the top wall. The bottom wall is provided with an opening through which the antenna assembly passes and enters the accommodating space. The side wall structure is a sandwich structure, the sandwich structure comprises at least two side walls which are arranged at intervals, the thickness range of the side walls is [0.4mm, 1.5mm ], and the thickness range of the sandwich layer between every two adjacent side walls is [0.8mm, 2.2mm ]. The utility model discloses embodiment's antenna house utilizes the sandwich structure of lateral wall can offset the back wave, reduces the influence to antenna radiation directional diagram to combine the lateral wall thickness scope and the intermediate layer thickness scope of above-mentioned antenna house, can alleviate the weight of antenna house.

Description

Antenna housing, radar and movable platform

Technical Field

The utility model relates to an antenna technical field, in particular to antenna house, radar and movable platform.

Background

In the related art, compared with ultrasonic waves, infrared waves, laser radars and the like, the millimeter wave radar has stronger capacity of penetrating smoke, fog and dust and has the characteristics of all weather and all day, so that the millimeter wave radar is widely applied to various industries and intelligent equipment such as automobiles, traffic, security, industry, unmanned aerial vehicles and the like. Along with the diversification of application scenes, the speed measurement, angle measurement and distance measurement of a single radar cannot meet the requirements of equipment working in a complex environment, the requirements of multitasking and multiple functions are increasing day by day, and besides the complication of data processing at the rear end of the radar, the radar antenna is required to scan beams and detect different directions. At present, the beam scanning is realized by mechanical scanning and electronic scanning, namely mechanical rotation or phased array, wherein the phased array is mostly used for military radar, the beam scanning speed is high, the reliability is high, but the system is complex, and the cost is very high; mechanical scanning is relatively simple, low cost, and very practical in some applications where the requirements are not particularly high and low cost is desirable. However, in both mechanical scanning and phased array applications, the radome has a significant impact on antenna performance, which can cause antenna pattern distortion, reduced transmit and receive gains, and increased noise if not appropriate.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antenna house, radar and movable platform.

The antenna housing of the embodiment of the utility model is provided with an accommodating space for accommodating the antenna component, and comprises a top wall, a side wall structure and a bottom wall;

the side wall structure connects the bottom wall and the top wall;

the bottom wall is provided with an opening through which the antenna assembly penetrates and enters the accommodating space;

the side wall structure is a sandwich structure, the sandwich structure comprises at least two side walls which are arranged at intervals, the thickness range of each side wall is [0.4mm, 1.5mm ], and the thickness range of a sandwich layer between every two adjacent side walls is [0.8mm, 2.2mm ].

The utility model discloses embodiment's antenna house utilizes the sandwich structure of lateral wall can offset the back wave, reduces the influence to antenna radiation directional diagram to combine the lateral wall thickness scope and the intermediate layer thickness scope of above-mentioned antenna house, can alleviate the weight of antenna house.

In certain embodiments, the sandwich structure comprises two of said sidewalls, both of said sidewalls having a thickness of 0.7mm + 0.1mm, said sandwich having a thickness of 2.0mm + 0.2 mm.

In certain embodiments, the sandwich structure comprises two of said sidewalls, both of said sidewalls having a thickness of 1.0mm + 0.1mm, said sandwich having a thickness of 1.0mm + 0.2 mm.

In certain embodiments, the sandwich structure comprises two said side walls, said side walls at the outer layer having a thickness of 1.0mm ± 0.1mm, said side walls at the inner layer having a thickness of 0.7mm ± 0.1mm, said sandwich layer having a thickness of 1.75mm ± 0.2 mm.

In certain embodiments, the sandwich structure comprises two said side walls, said side walls at the outer layer having a thickness of 1.0mm ± 0.1mm, said side walls at the inner layer having a thickness of 0.5mm ± 0.1mm, said sandwich layer having a thickness of 2.0mm ± 0.2 mm.

In some embodiments, the interlayer is filled with an insulating reinforcement.

In certain embodiments, the material of the stiffener is foam.

In some embodiments, the radome is substantially cylindrical.

In some embodiments, the angle between the peripheral surface of the side wall and the bottom wall is 89 ° ± 0.5 °; and/or the presence of a gas in the gas,

the antenna housing is in a round table shape.

In certain embodiments, the top wall has a diameter of 124mm 5mm and the bottom wall has a diameter of 140mm 5 mm.

In some embodiments, a chamfered portion is provided between the side wall and the top wall, the chamfered portion having a radius of 10 ± 0.3 mm.

In some embodiments, the material of the radome is glass fiber reinforced plastic.

The utility model discloses the radar of embodiment includes antenna module and above-mentioned arbitrary embodiment the antenna house, the antenna module is located at least partially in accommodating space.

The utility model discloses embodiment's radar utilizes the sandwich structure of lateral wall can offset the back wave, reduces the influence to antenna radiation directional diagram to combine the lateral wall thickness scope and the intermediate layer thickness scope of above-mentioned antenna house, can alleviate the weight of antenna house.

The utility model discloses embodiment's movable platform includes organism and above-mentioned embodiment the radar, the radar is located the organism.

The utility model discloses embodiment's movable platform utilizes the sandwich structure of lateral wall can offset the back wave, reduces the influence to antenna radiation directional diagram to combine the lateral wall thickness scope and the intermediate layer thickness scope of above-mentioned antenna house, can alleviate the weight of antenna house.

In certain embodiments, the movable platform comprises at least one of: unmanned vehicles, unmanned vehicles.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic cross-sectional view of an antenna radome of an embodiment of the present invention;

fig. 2 is another schematic cross-sectional view of a radome of an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a radar according to an embodiment of the present invention;

fig. 4 is another schematic cross-sectional view of a radar according to an embodiment of the present invention;

fig. 5-8 are E-plane patterns of the antenna assembly of embodiments of the present invention without and with a radome;

fig. 9 is a schematic side view of an antenna cover according to an embodiment of the present invention;

fig. 10 is a perspective view of a radar according to an embodiment of the present invention;

fig. 11 is a perspective view of the movable platform according to the embodiment of the present invention.

Description of the main element symbols:

the antenna cover 10, the receiving space 11, the top wall 12, the side wall structure 14, the side wall 142, the outer peripheral surface 1422, the interlayer 144, the bottom wall 16, the opening 162, the chamfered portion 18, the antenna assembly 20, the antenna main body 22, the base body 24, the fixing portion 30, the radar 100, the movable platform 1000, the body 200, the body 210, the foot rest 220, the horn 230, the propeller 300, the bin 400, and the spraying mechanism 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Mobile platforms such as unmanned aerial vehicles, unmanned vehicles, etc. are typically equipped with millimeter-wave radars for speed measurement, angle measurement, distance measurement, detection of different orientations, etc. The antenna housing is a structural member for protecting the radar system from being influenced by the external environment, the antenna housing has great influence on the performance of the antenna, if the antenna housing is not suitable, the antenna directional diagram is distorted, the transmitting and receiving gains are reduced, and the noise is increased. In the related art, the shape of the radome includes a straight cylindrical shape, a doughnut shape, a disc shape, a spherical shape, and the like, the radome is of a single-layer sidewall structure, and the sidewall thickness of the radome has a large influence on a radar directional diagram. In order to cancel reflected waves and reduce the influence on the radar pattern, the sidewall thickness of the radome is preferably 3.6mm for a millimeter wave radar using a 24GHz band. Because the side wall thickness has reached 3.6mm, the weight of antenna house is great, is unfavorable for the lightweight of radar. For movable platforms such as unmanned aerial vehicles and unmanned vehicles, the radar arranged is very necessary to be light.

Therefore, in order to reduce the influence to antenna radiation pattern and guarantee the lightweight of radar, the utility model provides a new antenna house 10 is applicable to movable platform's such as unmanned vehicles, unmanned vehicles radar. Referring to fig. 1 to 4, a radome 10 is formed with a housing space 11 for housing an antenna assembly 20, and the radome 10 includes a top wall 12, a side wall structure 14, and a bottom wall 16. The side wall structure 14 connects the bottom wall 16 and the top wall 12. The bottom wall 16 is opened with an opening 162 through which the antenna assembly 20 is inserted into the receiving space 11. The sidewall structure 14 is a sandwich structure, which includes at least two sidewalls 142 spaced apart, the sidewalls 142 having a thickness in the range of [0.4mm, 1.5mm ], and an interlayer 144 between two adjacent sidewalls 142 having a thickness in the range of [0.8mm, 2.2mm ].

The utility model discloses embodiment's antenna house 10 utilizes the sandwich structure of lateral wall 142 to offset the back wave, reduces the influence to antenna radiation pattern to lateral wall 142 thickness scope and the intermediate layer 144 thickness scope that combine above-mentioned antenna house 10 both can reduce the side lobe and can alleviate the weight of antenna house 10.

It is understood that the main factors affecting the performance of the radar 100 by the radome 10 include the dielectric constant and loss tangent (i.e., dielectric loss), the thickness of the radome 10, and the curvature of the radome 10. Wherein the larger the loss tangent, the more energy is lost by the conversion of electromagnetic wave energy into heat during the penetration of the radome 10. The greater the dielectric constant, the greater the reflection of the electromagnetic wave at the interface of the air and the radome 10 wall. In a case where the dielectric is constant, the thicker the thickness of the radome 10, the greater the dielectric loss, and the reflectivity periodically fluctuates according to the thickness change. The larger the curvature of the radome 10, the more directly interferes with the formation of antenna plane waves, resulting in deterioration of the side lobes.

The utility model discloses embodiment's antenna house 10 offsets the back wave through sandwich structure, rationally sets up sandwich structure's lateral wall 142 thickness and intermediate layer 144 thickness (the thickness of rationally setting up antenna house 10 promptly), reduces the influence of antenna house 10 to radar 100's antenna radiation directional diagram when lightening antenna house 10 weight, reduces the vice lamella. The antenna housing 10 can be applied to the radar 100, the radar 100 can be detected uniformly in all directions without rotating the antenna housing 10, and the requirement of 360-degree all-directional scanning in a certain direction of the radar 100 can be met. The utility model discloses a simple and convenient mode has realized 360 even antenna house 10 of qxcomm technology of unidirectional, and gain, beam width, vice lamella homoenergetic satisfy the in-service use demand, have reduced the cost and the complexity of antenna house 10. The utility model discloses antenna house 10 of embodiment is not limited to 360 even scans, can scan or scan at certain angle range based on certain discrete angle.

Antenna module 20 is located antenna house 10's accommodating space 11, and antenna house 10 can realize antenna module 20 and external environment's physical isolation, has guaranteed physical reliability such as dustproof, waterproof of antenna module 20, prevents that dust, steam from getting into antenna module 20 and influencing the antenna performance. The sandwich structure includes at least two sidewalls 142 arranged at intervals, and an interlayer 144 is formed between two adjacent sidewalls 142, and the interlayer 144 may be air or filled with an insulating medium. In the illustrated embodiment, the sandwich structure includes two sidewalls 142 with a sandwich layer 144 formed between the two sidewalls 142. In other embodiments, the sandwich structure may include three sidewalls 142 or other number of sidewalls 142, the number of interlayers 144 being one less than the number of sidewalls 142. The thickness of the sidewall 142 may range from [0.4mm, 1.5mm ], i.e., the thickness of the sidewall 142 may be 0.4mm, 1.5mm, or other values between 0.4mm and 1.5 mm. The thickness of the interlayer 144 between two adjacent sidewalls 142 may be in the range of 0.8mm, 2.2mm, i.e., the interlayer 144 may have a thickness of 0.8mm, 2.2mm, or other values between 0.8mm and 2.2 mm.

In the example of fig. 1, the top wall 12 may be a single layer structure with the bottom wall 16 partially hollowed out to form an opening 162. In the example of fig. 2, the top wall 12 may be a sandwich structure with the bottom wall 16 being hollowed out entirely to form an opening 162.

It should be noted that the antenna cover 10 may be applied to any device having the antenna assembly 20, and is not limited to the radar 100, and the antenna assembly 20 is protected by the antenna cover 10, so that the service life of the antenna assembly 20 is prolonged. The utility model discloses an antenna house 10 can be applicable to 24-24.24GHz and 76-81GHz frequency channel, and application frequency range is wide. The antenna house 10 of the single lateral wall 142 of the related art is applied to the antenna assembly 20 of 24G frequency channel, and the thickness of lateral wall 142 needs about 3.6mm, and the utility model discloses a sandwich structure, the thickness of lateral wall 142 is thinner relatively, can alleviate the weight of antenna house 10.

Referring to fig. 1, 2 and 5, in some embodiments, the sandwich structure includes two sidewalls 142, the thickness of each sidewall 142 is 0.7mm ± 0.1mm, and the thickness of the sandwich layer 144 is 2.0mm ± 0.2 mm.

It can be understood that + -0.1 mm is the allowable tolerance range for the thickness of the sidewall 142 and + -0.2 mm is the allowable tolerance range for the thickness of the interlayer 144, which facilitates the processing of the interlayer structure. Preferably, the thicknesses T1 and T2 of both side walls 142 are 0.7mm, the thickness T3 of the interlayer 144 is 2.0mm, and the influence of the radome 10 on the side lobe is minimized.

Fig. 5 is an E-plane pattern of the antenna cover 10 without using the antenna cover 10 and using the antenna cover 10 of the present embodiment for the antenna assembly 20. As can be seen from fig. 5, compared to the case where the radome 10 is not provided, when the radome 10 according to the present embodiment is used, the change in the side lobe of the antenna assembly 20 is small, and the performance of the antenna assembly 20 is less affected by the radome 10.

Referring to fig. 1, 2 and 6, in some embodiments, the sandwich structure includes two sidewalls 142, the thickness of each sidewall 142 is 1.0mm ± 0.1mm, and the thickness of the sandwich layer 144 is 1.0mm ± 0.2 mm.

It can be understood that + -0.1 mm is the allowable tolerance range for the thickness of the sidewall 142 and + -0.2 mm is the allowable tolerance range for the thickness of the interlayer 144, which facilitates the processing of the interlayer structure. Preferably, the thicknesses T1 and T2 of the two side walls 142 are both 1.0mm, the thickness T3 of the interlayer 144 is 1.0mm, and the influence of the radome 10 on the side lobe is minimal.

Fig. 6 is an E-plane pattern of the antenna cover 10 without using the antenna cover 10 and using the antenna cover 10 of the present embodiment for the antenna assembly 20. As can be seen from fig. 6, compared to the case where the radome 10 is not provided, when the radome 10 according to the present embodiment is used, the change in the side lobe of the antenna assembly 20 is small, and the performance of the antenna assembly 20 is less affected by the radome 10.

Referring to fig. 1, 2 and 7, in some embodiments, the sandwich structure includes two sidewalls 142, the thickness of the sidewall 142 at the outer layer is 1.0mm ± 0.1mm, the thickness of the sidewall 142 at the inner layer is 0.7mm ± 0.1mm, and the thickness of the interlayer 144 is 1.75mm ± 0.2 mm.

It can be understood that + -0.1 mm is the allowable tolerance range for the thickness of the sidewall 142 and + -0.2 mm is the allowable tolerance range for the thickness of the interlayer 144, which facilitates the processing of the interlayer structure. Preferably, the thickness T1 of the sidewall 142 at the outer layer is 1.0mm, the thickness T2 of the sidewall 142 at the inner layer is 0.7mm, and the thickness T3 of the interlayer 144 is 1.75mm, so that the radome 10 has minimal effect on the side lobe.

Fig. 7 is an E-plane pattern of the antenna cover 10 without using the antenna cover 10 and using the antenna cover 10 of the present embodiment for the antenna assembly 20. As can be seen from fig. 7, compared to the case where the radome 10 is not provided, when the radome 10 according to the present embodiment is used, the change in the side lobe of the antenna assembly 20 is small, and the performance of the antenna assembly 20 is less affected by the radome 10.

Referring to fig. 1, 2 and 8, in some embodiments, the sandwich structure includes two sidewalls 142, the thickness of the sidewall 142 at the outer layer is 1.0mm ± 0.1mm, the thickness of the sidewall 142 at the inner layer is 0.5mm ± 0.1mm, and the thickness of the interlayer 144 is 2.0mm ± 0.2 mm.

It can be understood that + -0.1 mm is the allowable tolerance range for the thickness of the sidewall 142 and + -0.2 mm is the allowable tolerance range for the thickness of the interlayer 144, which facilitates the processing of the interlayer structure. Preferably, the thickness T1 of the sidewall 142 at the outer layer is 1.0mm, the thickness T2 of the sidewall 142 at the inner layer is 0.5mm, and the thickness T3 of the interlayer 144 is 2.0mm, so that the radome 10 has minimal effect on the side lobe.

Fig. 8 is an E-plane pattern of the antenna cover 10 using the antenna cover 10 without the antenna assembly 20 and using the antenna cover 10 of the present embodiment. As can be seen from fig. 8, compared to the case where the radome 10 is not provided, when the radome 10 according to the present embodiment is used, the change in the side lobe of the antenna assembly 20 is small, and the performance of the antenna assembly 20 is less affected by the radome 10.

In some embodiments, the interlayer 144 is filled with an insulating reinforcement. It will be appreciated that in the case where the interlayer 144 is not filled with a reinforcement, the interlayer 144 is an air interlayer. Filling the interlayer 144 with a reinforcement may increase the structural strength of the sidewall structure 14. The stiffener may be a low density, low dielectric constant, low loss insulating dielectric. Specifically, in one example, the material of the stiffener is foam. The foam is low cost and light weight, and can avoid increasing the weight of the radome 10.

In some embodiments, the radome 10 is substantially cylindrical.

Specifically, in one embodiment, referring to FIG. 9, the angle A between the outer peripheral surface 1422 of the sidewall 142 and the bottom wall 16 is 89 ° ± 0.5 °, such as 89 °, 89.5 °, 88.5 ° or other degrees between 88.5 ° -89.5 °. In another embodiment, the radome 10 is in a truncated cone shape, the influence of the truncated cone-shaped radome 10 on the antenna radiation pattern is small, the structure is simple, injection molding and mold drawing are facilitated, and production is convenient. In yet another embodiment, the radome 10 has a truncated cone shape and the angle a between the outer peripheral surface 1422 of the sidewall 142 and the bottom wall 16 is 89 ° ± 0.5 °.

It is understood that the included angle a between the outer peripheral surface 1422 of the sidewall 142 and the bottom wall 16 can be set according to the performance requirements of the antenna assembly 20. In one embodiment, an included angle a between the outer peripheral surface 1422 of the sidewall 142 and the bottom wall 16 is 89 °, that is, an inclination angle of the sidewall 142 is 1 °, and the small-angle inclination angle has a small influence on a beam of the antenna assembly 20, and is beneficial to injection molding and mold drawing of the radome 10, thereby facilitating production.

Referring to FIG. 9, in some embodiments, the diameter D1 of the top wall 12 is 124 + -5 mm and the diameter D2 of the bottom wall 16 is 140 + -5 mm.

It will be appreciated that the diameter D1 of the top wall 12 may be 119mm, 124mm, 129mm or other values between 119mm-129 mm. The diameter D2 of bottom wall 16 may be 135mm, 140mm, 145mm, or other values between 135mm-145 mm. The diameters of top wall 12 and bottom wall 16 may be set based on the size of antenna assembly 20, the performance requirements of antenna assembly 20, and the like, to provide antenna assembly 20 with superior radiation pattern, radiation and reception gains.

Additionally, the diameter of opening 162 of bottom wall 16 may also be set based on the size of antenna assembly 20, the performance requirements of antenna assembly 20, and the like. The diameter of the opening 162 may be 110 ± 5mm, i.e., the diameter of the opening 162 may be 105mm, 110mm, 115mm, or other values between 105mm and 115 mm.

In some embodiments, a chamfered portion 18 is provided between the side wall 142 and the top wall 12, the radius of the chamfered portion 18 being 10 ± 0.3 mm.

It is understood that the radius of the chamfered portion 18 may be 9.7mm, 10mm, 10.3mm, or other values between 9.7mm and 10.3 mm. In some embodiments, the diameter of the top wall 12 is 124mm, the diameter of the bottom wall 16 is 140mm, the diameter of the opening 162 is 110mm, and the radius of the chamfer 18 is 10mm, and the antenna assembly 20 is covered by the antenna cover 10 configured according to the size, so that the radiation pattern, the emission and the receiving gain of the antenna assembly 20 are optimized.

In some embodiments, the material of the radome 10 is glass fiber reinforced plastic. Specifically, the glass fiber reinforced plastic may be a mixed material of Polyamide (PA, Polyamide, commonly known as nylon) and glass fiber (glass fiber), wherein the content range of the glass fiber is [ 20%, 30% ].

It can be understood that the top wall 12, the bottom wall 16 and the side wall 142 of the radome 10 are made of the mixed material of polyamide and glass fiber, and the manufactured radome 10 has good toughness, high structural strength, high corrosion resistance and low possibility of collision and breakage of the radome body, and can effectively protect the antenna assembly 20. The content of glass fibers may be 20%, 30% or a percentage between 20% and 30%. The content ratio of the polyamide and the glass fiber can be set in consideration of the cost and the strength. In some embodiments, the radome 10 is made of a mixture of 70% polyamide and 30% glass fiber, and the radome 10 made of the mixture according to the proportion has high strength and low cost.

Referring to fig. 3, 4 and 10, a radar 100 according to an embodiment of the present invention includes an antenna assembly 20 and the antenna cover 10 according to any of the above embodiments, where the antenna assembly 20 is at least partially located in the accommodating space 11.

The utility model discloses embodiment's radar 100 utilizes the sandwich structure of lateral wall 142 to offset the back wave, reduces the influence to antenna radiation pattern to lateral wall 142 thickness scope and the intermediate layer 144 thickness scope that combine above-mentioned antenna house 10 can alleviate the weight of antenna house 10.

It is to be appreciated that the radar 100 of embodiments of the present invention may be a millimeter wave radar. Compared with ultrasonic wave, infrared and laser radar, the millimeter wave radar has stronger capacity of penetrating smoke, fog and dust and has the characteristics of all weather and all day, so the millimeter wave radar is widely applied to various industries and intelligent equipment such as automobiles, traffic, security, industry, unmanned aircrafts and the like. Along with the diversification of application scenes, the speed measurement, angle measurement and distance measurement of a single radar cannot meet the requirements of equipment working in a complex environment, the requirements of multitasking and multiple functions are increasing day by day, and besides the complication of radar rear-end data processing, an antenna assembly of the radar is required to scan beams and detect different directions. The beam scanning mode comprises mechanical scanning and electronic scanning, namely mechanical rotation or phased array, wherein the phased array is mostly used for military radars, the beam scanning speed is high, the reliability is high, but the system is complex and the cost is very high; mechanical scanning is relatively simple, low cost, and very practical in some applications where the requirements are not particularly high and low cost is desirable. No matter to mechanical scanning or phased array, the antenna house has a huge influence on the performance of the antenna assembly, and if not suitable, the radiation pattern of the antenna assembly is distorted, the emission and receiving gains are reduced, and the noise is increased. The utility model discloses radar 100 of embodiment uses the antenna house 10 of above-mentioned embodiment, and antenna module 20 can realize the demand of 360 omnidirectional uniform scanning of unidirectional, and antenna module 20's gain, radiation pattern, minor lobe homoenergetic satisfy practical requirement.

Specifically, the antenna assembly 20 may include an antenna body 22 and a housing 24. Wherein the antenna main body 22 is fixed on the base body 24. The antenna body 22 is housed in the housing space 11 of the antenna cover 10, and the antenna body 22 is protected by the antenna cover 10, thereby preventing the antenna body 22 from being damaged. Further, the antenna body 22 and the top wall 12 of the radome 10 and the side wall 142 located in the inner layer are arranged at intervals, so that the antenna body 22 is prevented from being affected by direct contact between the radome 10 and the antenna body 22. The bottom wall 16 of the antenna cover 10 abuts against the base body 24 to seal the antenna main body 22 in the housing space 11, thereby preventing foreign objects from entering the housing space 11 and affecting the performance of the antenna main body 22.

Pedestal 24 and radome 10 accessible screw thread, joint or other modes realize fixed connection, and the lateral wall 142 that radome 10 is located the inlayer is equipped with fixed part 30, and fixed part 30 is connected with pedestal 24. In the example of fig. 3, the fixing portion 30 includes a screw structure, and the sidewall 142 located at the inner layer is screw-fitted with the housing 24 of the antenna assembly 20. In the example of fig. 4, the fixing portion 30 may be a metal base, and the base body of the antenna assembly 20 is clamped to the metal base by a clamping structure.

In addition, the central axis of the sidewall structure 14 of the antenna housing 10 coincides with the rotation axis of the antenna assembly 20, so that the influence of the antenna housing 10 on the performance of the antenna assembly 20 is reduced, and the performance of the antenna assembly 20 is optimized. The antenna assembly 20 may be rotated about an axis of rotation by a motor.

Referring to fig. 11, a movable platform 1000 according to an embodiment of the present invention includes a body 200 and a radar 100 according to the above embodiment, wherein the radar 100 is disposed on the body 200.

The utility model discloses embodiment's movable platform 1000 utilizes the sandwich structure of lateral wall 142 to offset the back wave, reduces the influence to antenna radiation pattern to combine the lateral wall 142 thickness scope and the intermediate layer 144 thickness scope of above-mentioned antenna house 10, can alleviate the weight of antenna house 10.

It can be understood that the radar 100 is in communication connection with a control system of the movable platform 1000 to send detected obstacle information to the control system, and the control system can control the movement of the movable platform 1000 according to the received obstacle information, so as to achieve obstacle avoidance of the movable platform 1000.

In certain embodiments, the movable platform 1000 includes at least one of: unmanned vehicles, unmanned vehicles.

It is understood that movable platform 1000 may be an unmanned aerial vehicle, an unmanned vehicle. The present embodiment is further described by taking the movable platform 1000 as an unmanned aerial vehicle as an example. Wherein, the control system is the flight control system of unmanned vehicles. Referring to fig. 11, the body 200 may include a body 210 and foot rests 220 connected to both sides of the bottom of the body 210. Further, the body 200 may further include arms 230 connected to both sides of the body 210. Optionally, the radar 100 is fixedly attached to the foot rest 220. Of course, the radar 100 may be fixedly attached to the body 210 or the horn 230.

The unmanned aerial vehicle of the illustrated embodiment is an eight-rotor unmanned aerial vehicle. A propeller 300 may be connected to an end of the horn 230 remote from the fuselage 210 to provide flight power for the unmanned aerial vehicle. Optionally, the unmanned aerial vehicle is a plant protection unmanned aerial vehicle, and the bottom of the fuselage 210 is provided with a bin 400 for holding pesticides or seeds. The bin 400 may be provided with a spreader mechanism (not shown) which cooperates with the bin 400. Seeds can be arranged in the material box 400 and then sown through the sowing mechanism, so that automatic agricultural operation is realized. Further, the end of the arm 230 remote from the body 210 may be provided with a spraying mechanism 500, and the spraying mechanism 500 is also engaged with the hopper 400. The pesticide can be filled in the material box 400 and then sprayed through the spraying mechanism 500, so that the automatic agricultural operation is realized. In other embodiments, the unmanned aerial vehicle can be a quad-rotor unmanned aerial vehicle or other unmanned aerial vehicle.

In the case where the movable platform 1000 is an unmanned vehicle, the radar 100 may be mounted on the roof or other suitable location.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An antenna cover is characterized in that the antenna cover is provided with a containing space for containing an antenna component, and the antenna cover comprises a top wall, a side wall structure and a bottom wall;

the side wall structure connects the bottom wall and the top wall;

2. The radome of claim 1, wherein the sandwich structure comprises two sidewalls, both sidewalls having a thickness of 0.7mm + 0.1mm, the sandwich thickness being 2.0mm + 0.2 mm.

3. The radome of claim 1, wherein the sandwich structure comprises two sidewalls, both sidewalls having a thickness of 1.0mm + 0.1mm, the sandwich thickness being 1.0mm + 0.2 mm.

4. The radome of claim 1, wherein the sandwich structure includes two sidewalls, the sidewalls at the outer layer having a thickness of 1.0mm + 0.1mm, the sidewalls at the inner layer having a thickness of 0.7mm + 0.1mm, and the sandwich thickness being 1.75mm + 0.2 mm.

5. The radome of claim 1, wherein the sandwich structure includes two sidewalls, the sidewalls at the outer layer having a thickness of 1.0mm + 0.1mm, the sidewalls at the inner layer having a thickness of 0.5mm + 0.1mm, and the sandwich thickness being 2.0mm + 0.2 mm.

6. The radome of claim 1, wherein the interlayer is filled with an insulating reinforcement member.

7. The radome of claim 6, wherein the material of the stiffener is foam.

8. The radome of claim 1, wherein the radome is substantially cylindrical.

9. The radome of claim 8, wherein an angle between the outer circumferential surface of the sidewall and the bottom wall is 89 ° ± 0.5 °; and/or the presence of a gas in the gas,

the antenna housing is in a round table shape.

10. The radome of claim 9, wherein the top wall has a diameter of 124 ± 5mm and the bottom wall has a diameter of 140 ± 5 mm.

11. The radome of claim 1, wherein a chamfered portion is provided between the side wall and the top wall, the chamfered portion having a radius of 10 ± 0.3 mm.

12. The radome of claim 1, wherein the radome material is a fiberglass reinforced plastic.

13. A radar comprising an antenna assembly and a radome of any one of claims 1 to 12, the antenna assembly being at least partially located within the receiving space.

14. A movable platform comprising a body and a radar according to claim 13, the radar being located in the body.

15. The movable platform of claim 14, wherein the movable platform comprises at least one of: unmanned vehicles, unmanned vehicles.