Supporting structure for terahertz frequency band compact range RCS test

Abstract

The invention relates to the technical field of microwave testing, in particular to a supporting structure for a terahertz frequency band compact range RCS (radar cross section) test, which comprises a supporting frame body, a reflecting surface mounting and adjusting part and a feed source seat. The supporting frame body comprises a vertical section and a horizontal section, is connected with the lower end of a back frame of the reflecting surface through a follow-up adjusting support, is hinged to the vertical section through one end of a telescopic pull rod, is hinged to the upper end of the back frame through the other end of the telescopic pull rod, and when the telescopic pull rod stretches out and draws back, the back frame rotates relative to the follow-up adjusting support. The feed source antenna is installed on the pitching adjusting part through the horizontal adjusting part, the pitching adjusting part is installed on the horizontal section, the horizontal adjusting part drives the feed source antenna to move horizontally, and the pitching adjusting part is used for adjusting the pitching angle of the feed source antenna. According to the supporting structure, the reflecting surface is adjusted and fixed through the telescopic pull rod and the follow-up adjusting support, the position and angle of the feed source antenna are adjusted through the horizontal adjusting part and the pitching adjusting part, it is guaranteed that the feed source antenna is located at the focus of the reflecting surface, and testing is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of microwave testing, and in particular to a supporting structure for compact-range RCS testing in a terahertz frequency band. Background Art

[0002] Terahertz waves refer to electromagnetic waves with a frequency range of 0.1THz to 10THz and a wavelength of approximately 0.03mm to 3mm, which is between millimeter waves and infrared. With the development of terahertz RCS test technology, requirements have been put forward for terahertz frequency band measurement capabilities. In particular, the demand for large-scale scaled measurement of large-size targets has become increasingly urgent in recent years. The compact field test form, as one of the recognized indoor simulation far-field test methods, is also an important research direction for terahertz testing.

[0003] As an important device that converts the feed antenna beam from a spherical wave to a plane wave to create far-field conditions, the reflector plays an important role in the measurement of the compact radar cross section (RCS). The relative position adjustment of the reflector and the feed antenna directly affects the compact RCS measurement accuracy. Summary of the invention

[0004] The purpose of the present invention is to provide a support structure for terahertz frequency band compact range RCS testing, which can provide support and position adjustment for a reflective surface and a feed antenna.

[0005] In order to achieve the above object, the present invention provides a support structure for terahertz frequency band compact field RCS testing, comprising:

[0006] The support frame includes a vertical section and a horizontal section, the vertical section and the horizontal section are fixed in relative position, and a mounting platform extending horizontally outward is provided on the vertical section;

[0007] The reflective surface installation and adjustment part includes a telescopic pull rod and a follow-up adjustment support. The follow-up adjustment support is installed on the installation platform and is used to connect with the lower end of the back frame of the reflective surface. One end of the telescopic pull rod is hinged to the vertical section, and the other end is hinged to the upper end of the back frame of the reflective surface. When the telescopic pull rod is extended or retracted, the back frame rotates relative to the follow-up adjustment support to adapt to the angle change of the reflective surface.

[0008] The feed base includes a horizontal adjustment part and a pitch adjustment part. The feed antenna is installed on the pitch adjustment part through the horizontal adjustment part. The pitch adjustment part is installed on the horizontal section. The horizontal adjustment part can drive the feed antenna to move horizontally. The pitch adjustment part is used to adjust the pitch angle of the feed antenna.

[0009] Optionally, the telescopic pull rod includes a pull rod adjustment tube and two pull rod rotating screws, the two pull rod rotating screws are respectively threadedly connected to the two ends of the pull rod adjustment tube, and the thread directions of the two pull rod rotating screws are opposite. When the pull rod adjustment tube is rotated, the pull rod rotating screws move toward or away from each other.

[0010] Optionally, an arc block is provided at the lower end of the back frame, and an arc groove matching the arc block is provided on the follow-up adjustment support, and the arc block can rotate relative to the arc groove.

[0011] Optionally, the follow-up adjustment support includes a rotating block and a rotating block seat body, the rotating block seat body having a first accommodating groove, and an opposite side wall of the first accommodating groove is respectively provided with an accommodating recess, two ends of the rotating block are respectively located in the accommodating recess, two first adjusting screws respectively pass through the wall of the first accommodating groove and extend into the accommodating recess to abut against the end of the rotating block, and rotating the first adjusting screw can adjust the length of the first adjusting screw extending into the accommodating recess, two second adjusting screws are respectively provided in the direction perpendicular to the connection line of the two first adjusting screws, the two second adjusting screws pass through the wall of the first accommodating groove and extend into the first accommodating groove and abut against the other two ends of the rotating block, an arc groove is provided on the upper end surface of the rotating block, and the rotating block can move horizontally and / or rotate in the first accommodating groove.

[0012] Optionally, the horizontal adjustment part includes a seat body and two sliding parts, the upper end surface of the seat body is provided with a second accommodating groove, the sliding part includes a lead screw nut, a lead screw and a slide plate, one end of the lead screw passes through the wall of the second accommodating groove and extends into the second accommodating groove, and is rotatably fixed to the seat body through a bearing, and the other end is provided with a handwheel, the lead screw nut is located in the second accommodating groove and is rotatably mounted on the lead screw, a slide rail is respectively provided on both sides of the notch of the second accommodating groove, the slide plate is mounted on the lead screw nut and cooperates with the two slide rails, and can slide along the slide rails with the lead screw nut, the two sliding parts are symmetrically arranged and the lead screws of the two are coaxial.

[0013] Optionally, the pitch adjustment part includes two telescopic struts and two hinged structures, one end of each telescopic strut is hinged to the horizontal adjustment part, and the other end is hinged to the horizontal section, each hinged structure includes two hinge seats, the two hinge seats are respectively installed on the bottom side and the horizontal section of the horizontal adjustment part, the two hinge seats are hinged by a hinge axis, the telescopic struts and the hinged structures are spaced apart in the direction from the feed antenna to the reflecting surface, and the telescopic struts can adjust the pitch angle of the feed antenna by telescoping.

[0014] Optionally, the telescopic support rod includes a support rod adjustment tube and two support rod rotating screws, the two support rod rotating screws are respectively threadedly connected to the two ends of the support rod adjustment tube, and the thread directions of the two support rod rotating screws are opposite. When the support rod adjustment tube is rotated, the support rod rotating screws move toward or away from each other.

[0015] Optionally, the pitch adjustment part is installed on the horizontal section through an adjustment base, and the adjustment base includes a support base, a pin shaft, and a first adjustment plate, a second adjustment plate, and a third adjustment plate stacked in sequence, a first pin hole is provided at the bottom of the support base, a first long waist hole is provided on the first adjustment plate, a second long waist hole is provided on the second adjustment plate, and a second pin hole is provided on the third adjustment plate, one end of the pin shaft passes through the second pin hole and the second long waist hole in sequence and then is inserted into the first long waist hole, and the other end of the pin shaft is inserted into the first pin hole, and the length direction of the first long waist hole is perpendicular to the length direction of the second long waist hole;

[0016] Two first bases are provided on the first adjustment plate, the two first bases are spaced apart along the length direction of the first long waist hole, a first adjustment screw hole is provided on the first base, a second base is provided at each end of the second adjustment plate, the two second bases are located between the two first bases and are spaced apart from the two first bases, and a third adjustment screw passes through the first adjustment screw hole and abuts against the second base;

[0017] Two third bases are provided at both ends of the second adjustment plate, and a second adjustment screw hole is provided on the third base. The two third bases are spaced apart along the length direction of the second long waist hole. Two fourth bases are provided on the third adjustment plate, and the two fourth bases are located between the two third bases and are spaced apart from the two third bases respectively. The fourth adjustment screw passes through the second adjustment screw hole and rests on the fourth base.

[0018] Optionally, the reflective surface installation and adjustment portion includes two telescopic pull rods and two follow-up adjustment supports.

[0019] Optionally, a counterweight is provided at the bottom end of the vertical section; and / or

[0020] The supporting frame is composed of multiple sections.

[0021] The above technical solution of the present invention has the following advantages:

[0022] The support structure for the compact field RCS test in the terahertz frequency band provided by the present invention includes a support frame, a reflector mounting and adjusting portion and a feed seat. The support frame includes a vertical section and a horizontal section, the vertical section and the horizontal section are fixed in relative position, and a mounting platform extending horizontally outward is provided on the vertical section. The reflector mounting and adjusting portion includes a telescopic pull rod and a follow-up adjustment support, the follow-up adjustment support is installed on the mounting platform, and is used to connect with the lower end of the back frame of the reflector. One end of the telescopic pull rod is hinged to the vertical section, and the other end is hinged to the upper end of the back frame. When the telescopic pull rod is extended and retracted, the back frame rotates relative to the follow-up adjustment support to adapt to the angle change of the reflector. The feed seat includes a horizontal adjustment portion and a pitch adjustment portion. The feed antenna is installed on the pitch adjustment portion through the horizontal adjustment portion, and the pitch adjustment portion is installed on the horizontal section. The horizontal adjustment portion can drive the feed antenna to move horizontally, and the pitch adjustment portion is used to adjust the pitch angle of the feed antenna. The support structure adjusts and fixes the reflecting surface through the telescopic pull rod and the follow-up adjustment support, and adjusts the position and angle of the feed antenna through the horizontal adjustment part and the pitch adjustment part to ensure that the feed antenna is located at the focus of the reflecting surface, making the test more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings of the present invention are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not necessarily be consistent with the actual products.

[0024] Figure 1 It is a schematic diagram of a support structure for RCS testing in a terahertz frequency band compact field in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A top view schematic diagram of

[0026] Figure 3 is a structural schematic diagram of a support frame in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a structure in which a telescopic pull rod is connected to a reflective surface in an embodiment of the present invention;

[0028] Figure 5 is a structural schematic diagram of a telescopic pull rod in an embodiment of the present invention;

[0029] Figure 6 is a structural schematic diagram of a feed base in an embodiment of the present invention;

[0030] Figure 7 is a structural schematic diagram of a horizontal adjustment unit in an embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a pitch adjustment part connected to a horizontal connection part and an adjustment base in an embodiment of the present invention;

[0032] Fig. 9 is a schematic structural diagram of a telescopic support rod in an embodiment of the present invention;

[0033] Fig.10 is a schematic structural diagram of a back frame in an embodiment of the present invention;

[0034] Fig.11 It is a structural schematic diagram of a follow-up adjustable support in an embodiment of the present invention;

[0035] Fig.12 It is a structural schematic diagram of an adjustment base (excluding the support base) in an embodiment of the present invention.

[0036] In the figure:

[0037] 1: Reflective surface;

[0038] 11: Back rack;

[0039] 12: arc block;

[0040] 2: Feed antenna;

[0041] 3: Support frame;

[0042] 31: vertical segment;

[0043] 311: Installation platform;

[0044] 32: horizontal segment;

[0045] 33: counterweight;

[0046] 4: Telescopic pull rod;

[0047] 41: tie rod adjustment tube;

[0048] 42: pull rod rotating screw;

[0049] 5: Follow-up adjustment support;

[0050] 51: arc groove;

[0051] 52: Block transfer;

[0052] 53: rotating block seat;

[0053] 531: first receiving slot;

[0054] 5311: Accommodating recess;

[0055] 532: first adjusting screw;

[0056] 533: second adjusting screw;

[0057] 6: Feed seat;

[0058] 61: horizontal adjustment unit;

[0059] 611: base body;

[0060] 6111: second receiving slot;

[0061] 6112: slide rail;

[0062] 612: sliding part;

[0063] 6121: Screw;

[0064] 6122: Screw nut;

[0065] 6123: Handwheel;

[0066] 6124: Skateboard;

[0067] 62: pitch adjustment unit;

[0068] 621: telescopic support rod;

[0069] 6211: Strut adjustment tube;

[0070] 6212: support rod rotating screw;

[0071] 622: articulated structure;

[0072] 6221: articulated seat;

[0073] 6222: articulated shaft;

[0074] 63: Adjust the base;

[0075] 631: support seat;

[0076] 632: pin;

[0077] 633: first adjustment plate;

[0078] 6331: First base;

[0079] 634: second adjustment plate;

[0080] 6341: Second base;

[0081] 6342: Third base;

[0082] 635: third adjustment plate;

[0083] 6351: Fourth pedestal;

[0084] 636: third adjusting screw;

[0085] 637: Fourth adjustment screw. DETAILED DESCRIPTION

[0086] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0087] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] like Figure 1 and Figure 2 As shown, the supporting structure for the terahertz frequency band compact field RCS test provided by the embodiment of the present invention includes a supporting frame 3, a reflective surface mounting and adjusting portion and a feed seat 6.

[0089] See also Figure 3 As shown, the support frame 3 includes a vertical section 31 and a horizontal section 32 . The vertical section 31 and the horizontal section 32 are fixed in relative position. A mounting platform 311 extending horizontally outward is provided on the vertical section 31 .

[0090] The reflective surface installation and adjustment part includes a telescopic pull rod 4 and a follow-up adjustment support 5, which is used to install the reflective surface 1 on the vertical section 31. Figure 1 As shown, the follow-up adjustable support 5 is installed on the mounting platform 311, and is used to be connected to the lower end of the back frame 11 of the reflecting surface 1. One end of the telescopic rod 4 is hinged to the vertical section 31, and the other end is hinged to the upper end of the back frame 11 of the reflecting surface 1. When the telescopic rod 4 is extended or retracted, the back frame 11 rotates relative to the follow-up adjustable support 5 to adapt to the angle change of the reflecting surface 1.

[0091] The feed seat 6 includes a horizontal adjustment part 61 and a pitch adjustment part 62. The feed antenna 2 is installed on the pitch adjustment part 62 through the horizontal adjustment part 61. The pitch adjustment part 62 is installed on the horizontal section 32. The horizontal adjustment part 61 can drive the feed antenna 2 to move horizontally, and the pitch adjustment part 62 is used to adjust the pitch angle of the feed antenna 2.

[0092] The support structure for the terahertz frequency band compact field RCS test of this embodiment adjusts and fixes the reflecting surface 1 through the telescopic pull rod 4 and the follow-up adjustment support 5, and adjusts the position and angle of the feed antenna through the horizontal adjustment part 61 and the pitch adjustment part 62 to ensure that the feed antenna 2 is located at the focus of the reflecting surface 1. The reflecting surface 1 converts the beam of the feed antenna 2 into plane wave irradiation, thereby realizing 220GHz~330GHz far-field RCS test.

[0093] To achieve better fixation, in one example, see Figure 2 and Figure 4 As shown, the reflective surface installation and adjustment portion includes two telescopic pull rods 4 and two follow-up adjustment supports 5.

[0094] In one example, see Figure 4 and Figure 5 As shown, the telescopic pull rod 4 includes a pull rod adjustment tube 41 and two pull rod rotating screws 42. The two pull rod rotating screws 42 are respectively threadedly connected to the two ends of the pull rod adjustment tube 41, and the thread directions of the two pull rod rotating screws 42 are opposite. By rotating the pull rod adjustment tube 41, the pull rod rotating screws 42 move toward or away from each other, thereby realizing the length adjustment of the telescopic pull rod 4, and then realizing the angle adjustment of the reflecting surface 1. During the adjustment process, the follow-up adjustment support 5 rotates with the reflection, which on the one hand provides stable support, and on the other hand releases stress that may be caused by articulation and assembly accuracy, thereby improving life and reliability.

[0095] In one example, see Fig.10 and Fig.11 As shown, an arc block 12 is provided at the lower end of the back frame 11, and an arc groove 51 matching the arc block 12 is provided on the follow-up adjustment support 5, and the arc block 12 can rotate relative to the arc groove 12 to achieve follow-up.

[0096] In order to achieve fine adjustment of the reflection position and angle, make the position of the reflection surface 1 more accurate and further release possible stress, see Fig.11As shown, in one example, the follow-up adjustment support 5 includes a rotating block 52 and a rotating block seat body 53, the rotating block seat body 53 has a first accommodating groove 531, and an opposite side wall of the first accommodating groove 531 is respectively provided with an accommodating recess 5311, the two ends of the rotating block 52 are respectively located in the accommodating recess 5311, and have a certain interval with the accommodating recess 5311, two first adjusting screws 532 respectively pass through the wall of the first accommodating groove 531 and extend into the accommodating recess 5311 to abut against the end of the rotating block 52, and rotating the first adjusting screw 532 can adjust the length of the first adjusting screw 532 extending into the accommodating recess 5311, thereby realizing fine-tuning of the position of the rotating block 52 in the axial direction of the first adjusting screw 532. Two second adjusting screws 533 are respectively provided in the direction of the line perpendicular to the two first adjusting screws 532. The two second adjusting screws 533 pass through the wall of the first accommodating groove 531 and extend into the first accommodating groove 531, and abut against the other two ends of the rotating block 52. The arc groove 51 is provided on the upper end surface of the rotating block 52, and the rotating block 52 can move horizontally and / or rotate in the first accommodating groove 531.

[0097] In one example, see Figure 6 and Figure 7 As shown, the horizontal adjustment part 61 includes a seat body 611 and two sliding parts 612. The upper end surface of the seat body 611 is provided with a second receiving groove 6111. The sliding part 612 includes a lead screw nut 6122, a lead screw 6121 and a slide plate 6124. One end of the lead screw 6121 passes through the wall of the second receiving groove 6111 and extends into the second receiving groove 6111, and is rotatably fixed to the seat body 611 through a bearing. A hand wheel 6123 is provided at the other end. The lead screw nut 6122 is located in the second receiving groove 6111 and is rotatably mounted on the lead screw nut 6121. On the rod 6121, a slide rail 6112 is respectively provided on both sides of the notch of the second accommodating groove 6111, and the slide plate 6124 is installed on the screw nut 6122 and cooperates with the two slide rails 6112. It can slide along the slide rail 6112 with the screw nut 6122. The two sliding parts 612 are symmetrically arranged and the screws 6121 of the two are coaxial. The two sliding parts 612 can be adjusted separately, and a feed antenna is respectively fixed on the slide plate 6124 of the first sliding part 612, which can respectively adopt a single-transmit and single-receive mode and a one-transmit and one-receive mode.

[0098] See also Figure 6 and Figure 8As shown, in one example, the pitch adjustment part 62 includes two telescopic struts 621 and two hinged structures 622, one end of each telescopic strut 621 is hinged to the horizontal adjustment part 61, and the other end is hinged to the horizontal section 32, each hinged structure 622 includes two hinge seats 6221, the two hinge seats 6221 are respectively installed on the bottom side of the horizontal adjustment part 61 and the horizontal section 32, the two hinge seats 6221 are hinged by a hinge shaft 6222, the telescopic struts 621 and the hinged structures 622 are spaced apart in the direction from the feed antenna 2 to the reflecting surface 1, and the telescopic struts 621 can adjust the pitch angle of the feed antenna 2 by telescoping.

[0099] In one example, see Fig. 9 As shown, the telescopic strut 621 includes a strut adjusting tube 6211 and two strut rotating screw rods 6212. The two strut rotating screw rods 6212 are respectively threadedly connected to the two ends of the strut adjusting tube 6211, and the thread directions of the two strut rotating screw rods 6212 are opposite. By rotating the strut adjusting tube 6211, the strut rotating screw rods 6212 move toward or away from each other to achieve length adjustment.

[0100] In order to achieve fine adjustment of the position of the feed antenna and horizontal angle rotation, in one example, see Figure 6 and Fig.12 As shown, the pitch adjustment part 62 is installed on the horizontal section 32 through the adjustment base 63. The adjustment base 63 includes a support base 631, a pin shaft 632, and a first adjustment plate 633, a second adjustment plate 634 and a third adjustment plate 635 stacked in sequence. A first pin hole (not shown in the figure) is provided at the bottom of the support base 631, a first long waist hole (not shown in the figure) is provided on the first adjustment plate 633, a second long waist hole (not shown in the figure) is provided on the second adjustment plate 634, and a second pin hole is provided on the third adjustment plate 635. One end of the pin shaft 632 passes through the second pin hole and the second long waist hole in sequence and is inserted into the first long waist hole. The other end of the pin shaft 632 is inserted into the first pin hole. The length direction of the first long waist hole is perpendicular to that of the second long waist hole.

[0101] Two first bases 6331 are provided on the first adjustment plate 633, and the two first bases 6331 are spaced apart along the length direction of the first long waist hole. A first adjusting screw hole is provided on the first base 6331. A second base 6341 is provided at both ends of the second adjustment plate 634 respectively. The two second bases 6341 are located between the two first bases 6331 and are spaced apart from the two first bases 6331 respectively. The third adjusting screw 636 passes through the first adjusting screw hole and rests on the second base 6341.

[0102] Two third bases 6342 are provided at both ends of the second adjustment plate 634, and the third base 6342 is provided with a second adjustment screw hole. The two third bases 6342 are spaced apart along the length direction of the second long waist hole. Two fourth bases 6351 are provided on the third adjustment plate 635. The two fourth bases 6351 are located between the two third bases 6342 and are spaced apart from the two third bases 6342 respectively. The fourth adjustment screw 637 passes through the second adjustment screw hole and abuts against the fourth base 6351. By rotating the third adjustment screw 636, the second adjustment plate 634, the third adjustment plate 635 and the pin 632 can be moved along the length direction of the first long waist hole, thereby achieving fine adjustment of the support seat 631, the horizontal adjustment part 61, the pitch adjustment part 62 and the feed antenna 2 in this direction. Similarly, by rotating the fourth adjustment screw 637, the second adjustment plate 634, the third adjustment plate 635 and the pin 632 can be moved along the length direction of the second long waist hole, thereby achieving fine adjustment of the support seat 631, the horizontal adjustment part 61, the pitch adjustment part 62 and the feed antenna 2 in this direction. In this example, when the horizontal rotation angle of the feed antenna 2 needs to be adjusted, the support seat 631 can be rotated relative to the pin 632 to achieve this.

[0103] In order to improve the stability of the support frame 3 , a counterweight 33 is provided at the bottom end of the vertical section 31 .

[0104] In order to facilitate transportation and installation, in one example, the support frame 3 is composed of multiple sections. Figure 1 As shown, the support frame body 3 is divided into two sections, which are fixed together by bolts when in use.

[0105] Any details not described in detail in the present invention are common knowledge or prior art in the art.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that not every embodiment contains only one independent technical solution. In the absence of a conflict of solutions, the various technical features mentioned in each embodiment can be combined in any manner to form other implementation methods that can be understood by those skilled in the art.

[0107] In addition, without departing from the scope of the present invention, the technical solutions described in the aforementioned embodiments may be modified, or some of the technical features may be replaced by equivalents, without causing the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A support structure for terahertz frequency band compact field RCS testing, characterized in that: include: The support frame comprises a vertical section and a horizontal section, wherein the vertical section and the horizontal section are fixed in relative position, and the vertical section is provided with a mounting platform extending horizontally outward; The reflective surface installation and adjustment part includes a telescopic pull rod and a follow-up adjustment support, wherein the follow-up adjustment support is installed on the installation platform and is used to connect with the lower end of the back frame of the reflective surface, one end of the telescopic pull rod is hinged to the vertical section, and the other end is hinged to the upper end of the back frame of the reflective surface, and when the telescopic pull rod is extended or retracted, the back frame rotates relative to the follow-up adjustment support to adapt to the angle change of the reflective surface; The feed seat includes a horizontal adjustment part and a pitch adjustment part. The feed antenna is installed on the pitch adjustment part through the horizontal adjustment part. The pitch adjustment part is installed on the horizontal section. The horizontal adjustment part can drive the feed antenna to move horizontally. The pitch adjustment part is used to adjust the pitch angle of the feed antenna.

2. The support structure according to claim 1, characterized in that: The telescopic pull rod includes a pull rod adjustment tube and two pull rod rotating screws. The two pull rod rotating screws are respectively threadedly connected to the two ends of the pull rod adjustment tube, and the thread directions of the two pull rod rotating screws are opposite. When the pull rod adjustment tube is rotated, the pull rod rotating screws move toward or away from each other.

3. The support structure according to claim 1, characterized in that: An arc block is arranged at the lower end of the back frame, and an arc groove matching the arc block is arranged on the follow-up adjustment support, and the arc block can rotate relative to the arc groove.

4. The support structure according to claim 3, characterized in that: The follow-up adjustment support includes a rotating block and a rotating block seat body, the rotating block seat body has a first accommodating groove, and an opposite side wall of the first accommodating groove is respectively provided with an accommodating recess, and two ends of the rotating block are respectively located in the accommodating recess, and two first adjusting screws respectively pass through the wall of the first accommodating groove and extend into the accommodating recess to abut against the end of the rotating block, and rotating the first adjusting screw can adjust the length of the first adjusting screw extending into the accommodating recess, and two second adjusting screws are respectively provided in the direction perpendicular to the connection line of the two first adjusting screws, and the two second adjusting screws pass through the wall of the first accommodating groove and extend into the first accommodating groove and abut against the other two ends of the rotating block, and the arc groove is arranged on the upper end surface of the rotating block, and the rotating block can move horizontally and / or rotate in the first accommodating groove.

5. The support structure according to claim 1, characterized in that: The horizontal adjustment part includes a seat body and two sliding parts. The upper end surface of the seat body is provided with a second accommodating groove. The sliding part includes a lead screw nut, a lead screw and a slide plate. One end of the lead screw passes through the wall of the second accommodating groove and extends into the second accommodating groove, and is rotatably fixed to the seat body through a bearing. A handwheel is provided at the other end. The lead screw nut is located in the second accommodating groove and is rotatably mounted on the lead screw. A slide rail is respectively provided on both sides of the notch of the second accommodating groove. The slide plate is mounted on the lead screw nut and cooperates with the two slide rails. It can slide along the slide rails with the lead screw nut. The two sliding parts are symmetrically arranged and the lead screws of the two are coaxial.

6. The support structure according to claim 1, characterized in that: The pitch adjustment part includes two telescopic struts and two hinged structures, one end of each of the telescopic struts is hinged to the horizontal adjustment part, and the other end is hinged to the horizontal section, each of the hinged structures includes two hinge seats, the two hinge seats are respectively installed on the bottom side of the horizontal adjustment part and the horizontal section, the two hinge seats are hinged by a hinge axis, the telescopic struts and the hinged structure are spaced apart in the direction from the feed antenna to the reflecting surface, and the telescopic struts can adjust the pitch angle of the feed antenna by telescoping.

7. The support structure according to claim 6, characterized in that: The telescopic support rod comprises a support rod adjustment tube and two support rod rotating screws, the two support rod rotating screws are respectively threadedly connected to the two ends of the support rod adjustment tube, and the thread directions of the two support rod rotating screws are opposite, and the support rod adjustment tube is rotated, and the support rod rotating screws move towards or away from each other.

8. The support structure according to claim 1, characterized in that: The pitch adjustment part is installed on the horizontal section through an adjustment base, and the adjustment base includes a support base, a pin shaft, and a first adjustment plate, a second adjustment plate, and a third adjustment plate stacked in sequence, a first pin hole is provided at the bottom of the support base, a first long waist hole is provided on the first adjustment plate, a second long waist hole is provided on the second adjustment plate, and a second pin hole is provided on the third adjustment plate, one end of the pin shaft passes through the second pin hole and the second long waist hole in sequence and then is inserted into the first long waist hole, and the other end of the pin shaft is inserted into the first pin hole, and the length direction of the first long waist hole is perpendicular to the length direction of the second long waist hole; The first adjustment plate is provided with two first bases, the two first bases are spaced apart along the length direction of the first long waist hole, the first base is provided with a first adjustment screw hole, two ends of the second adjustment plate are respectively provided with a second base, the two second bases are located between the two first bases and are spaced apart from the two first bases, and the third adjustment screw passes through the first adjustment screw hole and abuts against the second base; Two third bases are provided at both ends of the second adjustment plate, and a second adjustment screw hole is provided on the third base. The two third bases are spaced apart along the length direction of the second long waist hole. Two fourth bases are provided on the third adjustment plate, and the two fourth bases are located between the two third bases and are spaced apart from the two third bases respectively. The fourth adjustment screw passes through the second adjustment screw hole and rests on the fourth base.

9. The support structure according to claim 1, characterized in that: The reflective surface installation and adjustment part comprises two telescopic pull rods and two follow-up adjustment supports.

10. The support structure according to claim 1, characterized in that: A counterweight is provided at the bottom end of the vertical section; and / or The support frame is composed of multiple sections.

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