A portable tracking device for low earth orbit satellite antennas

Abstract

A portable tracking device of a low-orbit satellite antenna comprises a shell assembly and a driving mechanism arranged in the shell assembly, the top of the shell assembly is provided with an antenna surface, the driving mechanism is connected to the antenna surface for controlling the adjustment of the antenna surface in the pitch and roll directions, the bottom of the antenna surface is provided with a connecting structure, the connecting structure is provided with a first movable connecting point movably connected with the top end of the shell assembly, the connecting structure is further provided with a second movable connecting point and a third movable connecting point, and the first movable connecting point, the second movable connecting point and the third movable connecting point form a triangular structure in space; compared with the prior art, the support of the antenna surface is realized through the three-point connection, the occupied space of the antenna surface is reduced, thereby the transportation and carrying of the tracking device are facilitated, and the convenience of the tracking device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite communication equipment, in particular to a portable tracking device of a low-orbit satellite antenna. BACKGROUND

[0002] Low-orbit satellites have the characteristics of low orbit height, fast running speed (about 7-8 km / s), dynamic coverage range, etc. When a low-orbit satellite passes, the change rate of the azimuth angle and the elevation angle can reach dozens of degrees per second, and the phased array antenna is required to complete beam pointing update in microseconds. If the beam switching speed is insufficient, it is easy to cause tracking interruption. At the same time, when the phased array antenna scans at a large angle, the antenna gain decreases with the increase of the scanning angle (usually proportional to the cosine of the scanning angle), and the beam width is widened, resulting in signal strength attenuation and tracking precision deterioration.

[0003] To solve the above problems, the Chinese patent with application number 202111209786.4 discloses a low-orbit satellite antenna turntable and a low-orbit satellite antenna. The disclosed low-orbit satellite antenna turntable includes: an antenna main body; the antenna main body is connected with a rotating device, the rotating device includes an elevation assembly for driving the antenna main body to perform elevation movement, and a roll assembly for driving the antenna main body to perform roll movement; the elevation assembly and the roll assembly can independently operate to drive the antenna main body to simultaneously perform elevation and roll actions. The Chinese patent with application number 201811617761.6 discloses a tracking device of a low-orbit satellite ground station antenna and an application method thereof. The disclosed tracking device of a low-orbit satellite ground station antenna includes: an ephemeris prediction unit, which is connected with an ephemeris receiver in communication with a low-orbit satellite to receive ephemeris; a tracking control unit in communication with the ephemeris prediction unit, which is connected with a GPS and / or Beidou positioning unit and an inertial measurement unit; and a servo control unit in communication with the tracking control unit, which is provided with an antenna driving assembly and a frame assembly matched with the ground station antenna.

[0004] In the prior art disclosed above, the elevation assembly and the roll assembly are used to control the antenna to perform elevation movement and roll movement. The elevation assembly and the roll assembly are arranged at the bottom of the antenna main body. Although this method can realize the adjustment of the elevation angle and the roll angle of the antenna, the elevation assembly and the roll assembly need to be connected to the bottom of the antenna main body as a whole, so that the elevation assembly and the roll assembly occupy most of the space at the bottom of the antenna main body. During movement or transportation and carrying, the structure of the elevation assembly, the roll assembly and the antenna main body is large and occupies a wide space, which is not conducive to transportation and carrying. SUMMARY

[0005] The present application is to overcome the defects in the prior art, and provide a portable tracking device for a low-orbit satellite antenna, which has simple structure, small space occupied for connecting with an antenna surface and is convenient to carry.

[0006] In order to achieve the above-mentioned application purposes, the present application adopts the following technical scheme: a portable tracking device for a low-orbit satellite antenna, comprising a shell assembly and a driving mechanism arranged in the shell assembly, the top of the shell assembly is provided with an antenna surface, the driving mechanism is connected to the antenna surface for controlling the adjustment of the antenna surface in the pitch and roll directions, the bottom of the antenna surface is provided with a connecting structure, the connecting structure is provided with a first movable connection point movably connected with the top end of the shell assembly, the connecting structure is further provided with a second movable connection point and a third movable connection point, and the first movable connection point, the second movable connection point and the third movable connection point form a triangular structure in space, and the driving mechanism comprises a first jacking mechanism and a second jacking mechanism, which are movably connected with the second movable connection point and the third movable connection point on the connecting structure respectively and adjust the height of the second movable connection point and the third movable connection point in space through jacking respectively.

[0007] As a preferred scheme of the present application, the first jacking mechanism comprises a first motor and a first screw rod connected with the first motor, the first screw rod is connected with a first connecting rod, the second movable connection point is movably connected with the top end of the first connecting rod, and the first screw rod is connected with a first screw nut movably connected with the first connecting rod.

[0008] As a preferred scheme of the present application, the second jacking mechanism comprises a second motor and a second screw rod connected with the second motor, the second screw rod is connected with a second connecting rod, the third movable connection point is movably connected with the top end of the second connecting rod, and the second screw rod is connected with a second screw nut movably connected with the second connecting rod.

[0009] As a preferred scheme of the present application, the connecting structure comprises an antenna connecting seat and a magnetic piece arranged on the antenna connecting seat for connecting the antenna surface, and the antenna surface is provided with a mounting groove for mounting the magnetic piece.

[0010] As a preferred scheme of the present application, the top end of the shell assembly is provided with a central rotating support for connecting the antenna connecting seat, the central rotating support is rotatably connected with a rotating bearing seat, and the first movable connection point is movably connected with the rotating bearing seat.

[0011] As a preferred scheme of the present application, the azimuth driving assembly further comprises an azimuth motor and a rotating seat connected with the output end of the azimuth motor, and the rotating seat is provided with a rotating hole for connecting with the first jacking mechanism and the second jacking mechanism.

[0012] As a preferred scheme of the present application, the shell assembly comprises a shell and upper and lower end covers arranged at two ends of the shell, and the lower end cover is provided with supporting legs at the bottom.

[0013] As a preferred scheme of the present application, the first motor, the second motor and the azimuth motor are coaxially arranged, the azimuth motor is arranged in the lower end cover, the first motor and the second motor are arranged in the upper end cover, and the output ends of the first motor and the second motor are arranged opposite to each other.

[0014] As a preferred scheme of the present application, the shell is provided with a first guide groove and a second guide groove arranged along the height direction of the shell, the first screw nut is provided with a first guide wheel connected with the first guide groove, and the second screw nut is provided with a second guide wheel connected with the second guide groove.

[0015] As a preferred scheme of the present application, the shell is further provided with a control system and a battery pack electrically connected with the driving mechanism, and the shell is provided with a first partition plate for separating the control system from the battery pack and a second partition plate for separating the control system from the driving mechanism.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The connecting structure is arranged at the bottom of the antenna surface, the connecting structure is provided with a first movable connecting point, a second movable connecting point and a third movable connecting point, the first movable connecting point is movably connected to the top end of the shell assembly, the second movable connecting point and the third movable connecting point are respectively connected with a first jacking mechanism and a second jacking mechanism, three-point connection is realized to support the antenna surface, the occupied space of the antenna surface is reduced, the transportation and carrying of the tracking device are facilitated, the convenience of the tracking device is improved, the height of the two points of the antenna surface is adjusted by the first jacking mechanism and the second jacking mechanism, the angle adjustment of the antenna surface in the pitch and roll directions is realized, and the timeliness and stability of the antenna surface in receiving and transmitting signals with satellites are ensured.

[0018] 2. Since the antenna surface is supported and adjusted by three-point connection, compared with the prior art, when the antenna surface is adjusted in the pitch and roll angles, the first jacking mechanism and the second jacking mechanism move a smaller distance, the adjustment speed of the antenna surface is faster, and the response is more rapid, so that the response time of the tracking device is reduced.

[0019] 3、Through the common adjustment of the azimuth, the pitch and the roll angle of the antenna surface by the first jacking mechanism, the second jacking mechanism and the azimuth driving assembly, three-axis driving tracking is realized, the response speed of the tracking device is improved, the applicability is wider, the tracking device can be applied to the orbital satellite in a smaller scanning angle, and is not afraid of overtopping and low elevation angle, meanwhile, the first lead screw and the second lead screw drive the first connecting rod and the second connecting rod to lift respectively, so that the connecting structure connected to the top of the first connecting rod and the second connecting rod can be adjusted in the pitch angle and the roll angle at the same time, the linkage of the antenna surface in the pitch direction and the roll direction is realized, the adjustment speed of the antenna surface angle is improved, and then the response time is reduced;

[0020] 4、Further, the first motor, the second motor and the azimuth motor adopt the coaxial driving mode layout, the structure is more compact and efficient, the volume of the tracking device is smaller, and the carrying is more convenient;

[0021] 5、Further, the battery pack and the control system are built-in in the shell, the control and power supply are integrally arranged, the adjustment of the antenna surface is facilitated, the tracking device is more suitable for the wild harsh environment, and the first partition plate and the second partition plate are arranged in the shell and used for isolating the battery pack, the control system and the driving mechanism, so that the mutual interference is avoided, the response speed of the antenna surface is affected, the anti-interference ability of the tracking device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is a structural schematic diagram of the connecting structure of the present application;

[0024] Figure 3 is a structural schematic diagram of the first jacking mechanism and the second jacking mechanism of the present application;

[0025] Figure 4 is a structural schematic diagram of the azimuth driving assembly;

[0026] Figure 5 is a structural schematic diagram of the shell;

[0027] Figure 6 is a structural schematic diagram of the supporting leg;

[0028] Figure 7 is a structural schematic diagram of the present application after folding;

[0029] Figure 8 is a structural schematic diagram of the antenna surface;

[0030] Figure 9 is a working principle schematic diagram of the present application

[0031] Label: shell assembly 1, shell 101, first guide groove 1011, second guide groove 1012, first partition 1013, second partition 1014, upper end cover 102, upper mounting plate 1021, lower end cover 103, leg 1031, adjusting groove 1032, antenna surface 2, mounting groove 201, positioning hole 202, driving mechanism 3, first jacking mechanism 4, first motor 401, first gear 4011, first lead screw 402, first driven gear 4021, first connecting rod 403, first screw rod 4031, first fish-eye joint bearing 4032, first lead screw nut 404, first guide wheel 4041, second jacking mechanism 5, second motor 501, second gear 5011, second lead screw 502, second driven gear 5021, second connecting rod 503, second screw rod 5031, second fish-eye joint bearing 5032, second lead screw nut 504, second guide wheel 5041, azimuth driving assembly 6, azimuth motor 601, rotating seat 602, rotating hole 6021, control system 7, connecting structure 8, antenna connecting seat 801, first movable connecting point 8011, second movable connecting point 8012, third movable connecting point 8013, positioning pin 8014, magnetic part 802, central rotating support 803, rotating bearing seat 804, rotating shaft 8041, battery pack 9. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below with reference to the drawings.

[0033] As Figures 1-9 shown, a portable tracking device for low-orbit satellite antenna includes a shell assembly 1 and a driving mechanism 3 arranged in the shell assembly 1, the shell assembly 1 is provided with an antenna surface 2 at the top, the driving mechanism 3 is connected to the antenna surface 2 for controlling the adjustment of the antenna surface 2 in the pitch and roll directions, the antenna surface 2 is provided with a connecting structure 8 at the bottom, the connecting structure 8 is provided with a first movable connecting point 8011 movably connected to the top end of the shell assembly 1, the connecting structure 8 is also provided with a second movable connecting point 8012 and a third movable connecting point 8013, and the first movable connecting point 8011, the second movable connecting point 8012 and the third movable connecting point 8013 form a triangular structure in space, the driving mechanism 3 includes a first jacking mechanism 4 and a second jacking mechanism 5, the first jacking mechanism 4 and the second jacking mechanism 5 are movably connected to the second movable connecting point 8012 and the third movable connecting point 8013 of the connecting structure 8 respectively and adjust the height of the second movable connecting point 8012 and the third movable connecting point 8013 in space by jacking respectively.

[0034] Further, the connecting structure 8 is arranged at the middle part of the bottom of the antenna surface 2, the first movable connecting point 8011, the second movable connecting point 8012 and the third movable connecting point 8013 are arranged on the connecting structure 8, and the first movable connecting point 8011, the second movable connecting point 8012 and the third movable connecting point 8013 are not on the same straight line, that is, the first movable connecting point 8011, the second movable connecting point 8012 and the third movable connecting point 8013 form a triangular structure in space, and the support of the antenna surface 2 is realized through the three-point connection, the occupied space of the antenna surface 2 is reduced, thereby facilitating the transportation and carrying of the tracking device, improving the convenience of the tracking device, and the height adjustment of the two points of the antenna surface 2 is realized through the first jacking mechanism 4 and the second jacking mechanism 5, thereby realizing the angle adjustment of the antenna surface 2 in the pitch and roll directions, and ensuring the timeliness and stability of the antenna surface 2 in the satellite signal transmission.

[0035] The first jacking mechanism 4 comprises a first motor 401 and a first screw rod 402 connected with the first motor 401, the first screw rod 402 is connected with a first connecting rod 403, the second movable connecting point 8012 is movably connected to the top end of the first connecting rod 403, and the first screw rod 402 is connected with a first screw nut 404 movably connected with the first connecting rod 403.

[0036] The second jacking mechanism 5 comprises a second motor 501 and a second screw rod 502 connected with the second motor 501, the second screw rod 502 is connected with a second connecting rod 503, the third movable connecting point 8013 is movably connected to the top end of the second connecting rod 503, and the second screw rod 502 is connected with a second screw nut 504 movably connected with the second connecting rod 503.

[0037] Further, the first jacking mechanism 4 and the second jacking mechanism 5 are arranged at the upper end of the shell assembly 1, the azimuth driving assembly 6 is arranged at the lower end of the shell assembly 1, the first jacking mechanism 4 and the second jacking mechanism 5 are connected with the antenna surface 2 through the connecting structure 8, and the pitch angle and the roll angle of the antenna surface 2 are adjusted; the first screw rod 402 and the second screw rod 502 are vertically arranged, the first connecting rod 403 is connected to the first screw rod 402, the second connecting rod 503 is connected to the second screw rod 502, the first connecting rod 403 and the second connecting rod 503 are driven to rise and fall through the first screw rod and the second screw rod respectively, so that the connecting structure 8 connected to the top ends of the first connecting rod 403 and the second connecting rod 503 can be adjusted in the pitch angle and the roll angle at the same time, the antenna surface 2 is linked in the pitch direction and the roll direction, the adjustment speed of the angle of the antenna surface 2 is improved, and the response time is reduced.

[0038] The shell assembly 1 comprises a shell 101, an upper end cover 102 and a lower end cover 103 arranged at two ends of the shell 101, the upper end cover 102 is provided with an upper mounting plate 1021, and the parts are connected by bolts, and a sealing groove is designed at the connection to meet the protection level requirement after locking.

[0039] The lower end cover 103 is provided with a plurality of supporting legs 1031 distributed along the circumferential direction of the lower end cover 103, and the outer wall of the lower end cover 103 is provided with an adjusting groove 1032 for mounting the supporting legs 1031, the supporting legs 1031 are rotationally arranged in the adjusting groove 1032, when the tracking device is not used, the supporting legs 1031 can be folded upward, and the antenna surface 2 is disassembled, thereby facilitating carrying, as shown in Figure 7

[0040] The output end of the first motor 401 is connected with a first gear 4011, the top end of the first lead screw 402 is provided with a first driven gear 4021 engaged with the first gear 4011, the first lead screw 402 is connected with a first screw nut 404, the bottom end of the first connecting rod 403 is connected to the first screw nut 404, further, the first motor 401 is a joint motor, the first gear 4011 is arranged at the rotor end of the first motor 401, the stator end of the first motor 401 is fixedly arranged in the upper end cover 102, the first lead screw 402 is arranged in the shell 101 along the vertical direction, and the first lead screw 402 passes through the upper mounting plate 1021, the top end of the first lead screw 402 is provided with the first driven gear 4021, the first driven gear 4021 is engaged with the first gear 4011, the diameter of the first driven gear 4021 is smaller than that of the first gear 4011, the first motor 401 drives the first gear 4011 to rotate, thereby driving the first driven gear 4021 and the first lead screw 402 to rotate synchronously, the first screw nut 404 is threadedly connected to the first lead screw 402, the first connecting rod 403 comprises a first screw rod 4031 and first fish-eye joint bearings 4032 arranged at two ends of the first screw rod 4031, and the first screw nut 404 is connected with the first fish-eye joint bearings 4032 at the bottom end of the first screw rod 4031.

[0041] ​The output end of the second motor 501 is connected with a second gear 5011, the top end of a second lead screw 502 is provided with a second driven gear 5021 engaged with the second gear 5011, a second lead screw nut 504 is connected to the second lead screw 502, the bottom end of a second connecting rod 503 is connected to the second lead screw nut 504, further, the second motor 501 is a joint motor, the second gear 5011 is arranged at the rotor end of the second motor 501, the stator end of the second motor 501 is fixedly arranged in the upper mounting plate 1021, the second lead screw 502 is arranged in the housing 101 in the vertical direction, and the second lead screw 502 passes through the upper mounting plate 1021, the top end of the second lead screw 502 is provided with the second driven gear 5021, the second driven gear 5021 is engaged with the second gear 5011, the diameter of the second driven gear 5021 is smaller than the diameter of the second gear 5011, the second motor 501 drives the second gear 5011 to rotate, so as to drive the second driven gear 5021 and the second lead screw 502 to rotate synchronously, the second lead screw nut 504 is threadedly connected to the second lead screw 502, and the second connecting rod 503 comprises a second screw rod 5031 and second fish-eye joint bearings 5032 arranged at both ends of the second screw rod 5031.

[0042] The first motor 401, the second motor 501 and the azimuth motor 601 are coaxially arranged, the first motor 401 and the second motor 501 are arranged in the upper end cover 102, and the output ends of the first motor 401 and the second motor 501 are oppositely arranged, specifically, the first motor 401 is arranged at the top end in the upper end cover 102, the second motor 501 is arranged in the upper mounting plate 1021 in the upper end cover 102, the output end of the first motor 401 is downwardly arranged, the output end of the second motor 501 is upwardly arranged, that is, the first gear 4011 and the second gear 5011 are oppositely arranged, the length of the first lead screw 402 and the second lead screw 502 is reduced, and a gap is reserved between the first gear 4011 and the second gear 5011, so that the first gear 4011 and the second gear 5011 are prevented from interfering with each other; in addition, the first motor 401 and the second motor 501 are arranged in a coaxial driving mode, the structure is more compact and efficient, the size of the tracking device is smaller, and the tracking device is more convenient to carry.

[0043] The shell 101 is provided with a first guide groove 1011 and a second guide groove 1012 arranged along the height direction thereof, the first screw nut 404 is provided with a first guide wheel 4041 connected with the first guide groove 1011, the second screw nut 504 is provided with a second guide wheel 5041 connected with the second guide groove 1012, further, the first screw nut 404 is provided with a connecting shaft, the connecting shaft passes through the first guide groove 1011 and is connected with the first fish-eye joint bearing 4032, the first guide wheel 4041 is arranged on the connecting shaft and is slidingly connected in the first guide groove 1011, so as to guide the first connecting rod 403 to move linearly; the second screw nut 504 is also provided with a connecting shaft, the connecting shaft passes through the second guide groove 1012 and is connected with the second fish-eye joint bearing 5032, the second guide wheel 5041 is arranged on the connecting shaft and is slidingly connected in the second guide groove 1012, so as to guide the second connecting rod 503 to move linearly.

[0044] The connecting structure 8 comprises an antenna connecting seat 801 and a magnetic member 802 arranged on the antenna connecting seat 801 and used for connecting the antenna surface 2, the antenna surface 2 is provided with a mounting groove 201 used for mounting the magnetic member 802, further, the magnetic member 802 adopts a strong magnet, a magnetically conductive metal adsorption surface matched with the magnetic member 802 is arranged in the mounting groove 201, and a positioning pin 8014 is arranged on the antenna connecting seat 801, a positioning hole 202 corresponding to the positioning pin 8014 is arranged on the antenna surface 2, in this embodiment, two positioning pins 8014 are arranged, the two positioning pins 8014 are located at opposite sides of the magnetic member 802, through cooperation of the positioning pin 8014 and the positioning hole 202, the magnetic member 802 can be accurately adsorbed in the mounting groove 201, so that the firmness of the antenna surface 2 after installation is ensured, and the magnetic adsorption + positioning pin design between the tracking device and the antenna surface 2 is adopted, so that the disassembly and assembly are more convenient and efficient.

[0045] The top end of the shell assembly 1 is provided with a central rotating support 803 used for connecting the antenna connecting seat 801, the central rotating support 803 is rotatably connected with a rotating bearing seat 804, the first movable connection point 8011 is movably connected to the rotating bearing seat 804, further, the central rotating support 803 is fixedly arranged on the top of the upper end cover 102, the rotating bearing seat 804 is connected to the central rotating support 803 through a rotating shaft, a deep groove ball bearing is assembled on the central rotating support 803, the rotating bearing seat 804 and the deep groove ball bearing are connected through a rotating shaft 8041 and rotate around the Y direction, the bearing position, i.e., the first movable connection point 8011, is arranged on the antenna connecting seat 801, the deep groove ball bearing is arranged in the first movable connection point 8011, the first movable connection point 8011 is connected with the rotating bearing seat 804 through the deep groove ball bearing and rotates around the X direction.

[0046] It should be noted that the Y direction refers to the axial direction of the rotating shaft 8041, and the X direction is the horizontal direction perpendicular to the Y direction.

[0047] The second movable connection point 8012 and the third movable connection point 8013 are arranged on the two sides of the antenna connecting seat 801, the second movable connection point 8012 is connected with the first connecting rod 403, and the third movable connection point 8013 is connected with the second connecting rod 503. Further, the second movable connection point 8012 and the third movable connection point 8013 are connected in the first fisheye joint bearing 4032 at the top end of the first screw rod 4031 and the second fisheye joint bearing 5032 at the top end of the second screw rod 5031.

[0048] The azimuth driving assembly 6 includes an azimuth motor 601 and a rotating seat 602 connected to the output end of the azimuth motor 601, and the rotating seat 602 is provided with a rotating hole 6021 for connecting the first lifting mechanism 4 and the second lifting mechanism 5. Further, the azimuth motor 601 is arranged in the lower end cover 103, the azimuth motor 601 is coaxially arranged with the first motor 401 and the second motor 501, and the azimuth motor 601 is a joint motor, the stator end of the azimuth motor 601 is fixedly arranged in the lower end cover 103, the rotor end of the azimuth motor 601 is connected to the rotating seat 602, and the rotating hole 6021 is arranged on the rotating seat 602, the first screw rod 402 and the second screw rod 502 are rotatably arranged in the rotating hole 6021 through bearings, and the shell 101 is arranged on the rotating seat 602 and rotates synchronously with the rotating seat 602, the azimuth motor 601 drives the rotating seat 602 to rotate, and then drives the whole tracking device to rotate, so as to adjust the azimuth angle of the antenna surface 2; the first lifting mechanism 4 and the second lifting mechanism 5 are arranged on the azimuth driving assembly 6, and the first lifting mechanism 4 and the second lifting mechanism 5 are driven to rotate as a whole by the azimuth driving assembly 6, so as to adjust the azimuth angle of the antenna surface 2. The first lifting mechanism 4, the second lifting mechanism 5 and the azimuth driving assembly 6 are arranged to jointly adjust the azimuth, pitch and roll angles of the antenna surface 2, realize three-axis driving tracking, improve the response speed of the tracking device, have wider applicability, can be applicable to low-orbit satellites in a smaller scanning angle, and are not afraid of over-the-top and low-elevation angle.

[0049] The control system 7 and the battery pack 9 are electrically connected with the driving mechanism 3, the first partition plate 1013 is arranged in the shell 101 to separate the control system 7 from the battery pack 9, and the second partition plate 1014 is arranged in the shell 101 to separate the control system 7 from the driving mechanism 3, further, the first partition plate 1013 and the second partition plate 1014, together with the upper mounting plate 1021 and the rotating seat 602, form a closed space, so as to physically separate the control system 7 from the first lead screw 402 and the second lead screw 502, improve the protection performance of the control system 7, improve the electromagnetic compatibility EMC, prevent electromagnetic interference between components, and improve the endurance time of the system.

[0050] The GPS is arranged in the antenna surface 2, so as to automatically obtain the longitude and latitude coordinates and the height of the current position. Meanwhile, the inertial navigation gyro chip is arranged in the antenna surface 2, so as to automatically obtain the angle and inclination information of the current antenna surface 2.

[0051] The antenna surface 2 is connected with the control system 7 through a single cable, and the power supply, the control signal and the network signal are transmitted at the same time.

[0052] The key switch is arranged on the control system 7, before starting, the antenna surface 2 is adsorbed on the antenna connecting seat 801 through the magnetic member 802, and the cable is connected. After starting, the CPU of the control system 7 automatically obtains the geographic coordinate information and the angle and inclination information of the antenna surface 2 transmitted by the antenna surface 2, combines the longitude and latitude information and the height of the satellite to be tracked, and obtains the theoretical heading angle and the pitch angle of the antenna surface 2 according to a specific calculation formula.

[0053] The control system 7 controls the azimuth motor 601 to rotate according to the calculated theoretical heading angle information, so as to drive the antenna surface 2 to rotate to the theoretical angle around the Z axis, wherein the Z axis refers to the height direction of the tracking device.

[0054] The control system 7 controls the first motor 401 and the second motor 501 to rotate according to the calculated theoretical pitch angle information, respectively, the first motor 401 transmits the torque to the first lead screw 402 through the first gear 4011 and the first driven gear 4021, the second motor 501 transmits the torque to the second lead screw 502 through the second gear 5011 and the second driven gear 5021, the rotary motion is converted into linear motion, so as to drive the first lead screw nut 404 and the second lead screw nut 504 to move up and down, and then drive the first connecting rod 403 and the second connecting rod 503 to swing, and the antenna connecting seat 801 rotates to the theoretical pitch angle in space based on the XY plane.

[0055] Because the satellite is always in motion, the satellite antenna needs to be corrected once every 200ms in tracking, to ensure that the main lobe of the antenna is always aligned with the satellite signal.

[0056] Before the device is powered off, the antenna surface 2 needs to be removed first. After pressing the button switch, the control system 7 will automatically control each drive motor to rotate to the storage angle, and the tracking device enters the storage mode. After manually closing the supporting leg 1031, the minimum volume state can be achieved.

[0057] Particularly, the first screw rod 4031 and the second screw rod 5031 are both positive and negative screw rods, the lengths of the two ends of which can be adjusted, and the second movable connection point 8012 and the third movable connection point 8013 are arranged perpendicular to each other, the first lead screw nut 404, the two first fish-eye joint bearings 4032 and the antenna connecting seat 801 form a four-bar linkage mechanism, the second lead screw nut 504, the two second fish-eye joint bearings 5032 and the antenna connecting seat 801 form another four-bar linkage mechanism, and the angle adjustment of the antenna surface 2 in the pitch direction is realized by simultaneously adjusting the two sets of perpendicular four-bar linkage mechanisms, which is more efficient than the adjustment in a single direction, and is more suitable for tracking of low-orbit satellite antennas, as the speed requirement in the azimuth direction is lower when the satellite is over the top.

[0058] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application; therefore, the application is not to be limited to the embodiments illustrated herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0059] Although the present document uses the following terms frequently: shell assembly 1, shell 101, first guide groove 1011, second guide groove 1012, first partition 1013, second partition 1014, upper end cover 102, upper mounting plate 1021, lower end cover 103, leg 1031, adjusting groove 1032, antenna surface 2, mounting groove 201, positioning hole 202, driving mechanism 3, first jacking mechanism 4, first motor 401, first gear 4011, first lead screw 402, first driven gear 4021, first connecting rod 403, first screw rod 4031, first fisheye joint bearing 4032, first lead screw nut 404, first guide wheel 4041, second jacking mechanism 5, second motor 501, second gear 5011, second lead screw 502, second driven gear 5021, second connecting rod 503, second screw rod 5031, second fisheye joint bearing 5032, second lead screw nut 504, second guide wheel 5041, azimuth driving assembly 6, azimuth motor 601, rotating seat 602, rotating hole 6021, control system 7, connecting structure 8, antenna connecting seat 801, first movable connecting point 8011, second movable connecting point 8012, third movable connecting point 8013, positioning pin 8014, magnetic piece 802, central rotating support 803, rotating bearing seat 804, rotating shaft 8041, battery pack 9, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A portable tracking device for a low-orbit satellite antenna, comprising a housing assembly (1) and a drive mechanism (3) disposed within the housing assembly (1), wherein an antenna surface (2) is provided on the top of the housing assembly (1), and the drive mechanism (3) is connected to the antenna surface (2) for controlling the adjustment of the antenna surface (2) in the pitch and roll directions, characterized in that, The antenna surface (2) has a connecting structure (8) at its bottom. The connecting structure (8) has a first movable connection point (8011) that is movably connected to the top of the outer shell assembly (1). The connecting structure (8) also has a second movable connection point (8012) and a third movable connection point (8013). The first movable connection point (8011), the second movable connection point (8012), and the third movable connection point (8013) form a triangular structure in space. The driving mechanism (3) includes components that are movably connected to the second movable connection point (8012) and the third movable connection point (8013) on the connecting structure (8) and can be adjusted by lifting. (8012), the first lifting mechanism (4) and the second lifting mechanism (5) at the spatial height of the third movable connection point (8013); the connection structure (8) includes an antenna connector (801) and a magnetic component (802) disposed on the antenna connector (801) for connecting the antenna surface (2), and the antenna surface (2) is provided with a mounting groove (201) for mounting the magnetic component (802); the top of the outer shell assembly (1) is provided with a central rotating support (803) for connecting the antenna connector (801), and a rotating bearing seat (804) is rotatably connected to the central rotating support (803), and the first movable connection point (8011) is movably connected to the rotating bearing seat (804).

2. The portable tracking device for a low-orbit satellite antenna according to claim 1, characterized in that, The first lifting mechanism (4) includes a first motor (401) and a first lead screw (402) connected to the first motor (401). A first connecting rod (403) is connected to the first lead screw (402). A second movable connection point (8012) is movably connected to the top of the first connecting rod (403). A first lead screw nut (404) is movably connected to the first connecting rod (403) on the first lead screw (402).

3. A portable tracking device for a low-orbit satellite antenna according to claim 2, characterized in that, The second lifting mechanism (5) includes a second motor (501) and a second lead screw (502) connected to the second motor (501). A second connecting rod (503) is connected to the second lead screw (502). A third movable connection point (8013) is movably connected to the top of the second connecting rod (503). A second lead screw nut (504) is connected to the second lead screw (502) and movably connected to the second connecting rod (503).

4. A portable tracking device for a low-orbit satellite antenna according to claim 3, characterized in that, It also includes an orientation drive assembly (6), which includes an orientation motor (601) and a rotating seat (602) connected to the output end of the orientation motor (601). The rotating seat (602) is provided with a rotating hole (6021) for connecting with the first lifting mechanism (4) and the second lifting mechanism (5).

5. A portable tracking device for a low-orbit satellite antenna according to claim 4, characterized in that, The outer casing assembly (1) includes a housing (101) and an upper end cover (102) and a lower end cover (103) disposed at both ends of the housing (101). The lower end cover (103) is provided with a support leg (1031) at the bottom.

6. A portable tracking device for a low-orbit satellite antenna according to claim 5, characterized in that, The first motor (401), the second motor (501) and the orientation motor (601) are coaxially arranged, with the orientation motor (601) located inside the lower end cover (103), and the first motor (401) and the second motor (501) both located inside the upper end cover (102). The output ends of the first motor (401) and the second motor (501) are arranged facing each other.

7. A portable tracking device for a low-orbit satellite antenna according to claim 5, characterized in that, The housing (101) is provided with a first guide groove (1011) and a second guide groove (1012) arranged along its height direction. The first lead screw nut (404) is provided with a first guide wheel (4041) connected to the first guide groove (1011), and the second lead screw nut (504) is provided with a second guide wheel (5041) connected to the second guide groove (1012).

8. A portable tracking device for a low-orbit satellite antenna according to claim 5, characterized in that, The housing (101) is further provided with a control system (7) and a battery pack (9) electrically connected to the drive mechanism (3). The housing (101) is provided with a first partition (1013) for separating the control system (7) and the battery pack (9) and a second partition (1014) for separating the control system (7) and the drive mechanism (3).

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