CN210572722U - Comprehensive calibration device for weather radar - Google Patents
Comprehensive calibration device for weather radar Download PDFInfo
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- CN210572722U CN210572722U CN201921034372.0U CN201921034372U CN210572722U CN 210572722 U CN210572722 U CN 210572722U CN 201921034372 U CN201921034372 U CN 201921034372U CN 210572722 U CN210572722 U CN 210572722U
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Abstract
The utility model relates to a calibration device is synthesized to weather radar, including the base, set up elevating system on the base and install the calibration mechanism on elevating system, calibration mechanism includes the rotatory drive unit of rocking arm and drive rocking arm, is equipped with the metal ball on the rocking arm, is provided with the balancing weight with the position department of metal ball looks symmetry on the rocking arm, and calibration mechanism still includes the control unit and the simulation target unit receiving and dispatching antenna that is connected with the control unit, and the drive unit is connected with the control unit. The technical scheme of the utility model among, adopt standard metal ball based on objective demarcation principle, be different from present based on the subjective demarcation of simulation target injection mode, the simulation target amplitude that subjective demarcation was selected belongs to the hypothesis truth value, and the objective demarcation of metal ball has the truth basis.
Description
Technical Field
The utility model relates to a weather radar equipment marks technical field, especially relates to a calibration device is synthesized to weather radar.
Background
The weather radar comprehensive calibration instrument can be used for testing radiation parameters of a calibrated radar system, testing reference parameters of the comprehensive calibration instrument, and can also be used for comprehensively calibrating overall measurement parameters of the radar system and the like. The detection of the far-field outer loop comprises parameters such as transmitting power, pulse width, frequency spectrum width, antenna beam width, antenna gain and the like, and the calibration is carried out on the parameters. The specific functions include:
(1) in a far field, by utilizing an electronic countermeasure principle, radar transmitting signals are received, detected and digitally stored, true values of echoes of targets with different distances are formed, and the distance resolution and the distance precision of the radar are detected; and modulating Doppler information for target data after frequency storage and range direction copying, generating target echo speed true values of different ranges and different speeds, calibrating radar speed resolution, speed measurement precision, spectral width resolution and spectral width measurement precision, changing the range of the radar speed true value, and calibrating radar speed fading ambiguity performance.
(2) And generating a Z parameter true value by controlling the amplitude of each target echo, and calibrating the error of the full-distance measuring range and full-speed measuring range radar Z parameter measuring system by combining a standard metal ball.
(3) And calibrating the polarization levelness and the verticality of radar transmission through dual-polarization reception. By receiving radar radiation signals and carrying out polarization scanning emission, the differential reflectivity factor ZDRTrue value, depolarization factor L of dual linear polarization radarDRTrue value, the calibration of the radar polarization measurement parameters is realized; the phase difference true value is generated by changing the phase of the dual-polarized transmitting channel, and the two-way differential propagation phase change value of the radar is realized
And a two-way differential propagation phase constant KDPCalibrating; the noise source is used for amplifying and controlling the noise amplitude to radiate to the radar, and the radar receiving noise coefficient can be calibrated.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
Therefore, an object of the utility model is to provide a calibration device is synthesized to weather radar, it can realize long-range unmanned control and long-range unmanned on duty online calibration of erectting to can carry out accurate polarization scanning and realize that dual polarization radar marks.
In order to achieve the above object, the technical scheme of the utility model a calibration device is synthesized to weather radar is provided, the on-line screen storage device comprises a base, the elevating system of setting on the base and install the calibration mechanism on elevating system, calibration mechanism includes the pivoted arm and drives the rotatory drive unit of pivoted arm, is equipped with the metal ball on the pivoted arm, is provided with the balancing weight with the position department of metal ball looks symmetry on the pivoted arm, and calibration mechanism still includes the control unit and the simulation target unit receiving and dispatching antenna that is connected with the control unit, and the drive unit is connected with the control unit.
In the technical scheme, a control unit can control a standard metal ball to reciprocate at a high speed along the radial direction of a weather radar to generate Doppler frequency to be detected by the weather radar, the control unit simultaneously controls a receiving and transmitting antenna of a simulation target unit to be in a receiving mode, receives radar transmitting signals through two channels, performs digital frequency storage, delay and Doppler modulation to form a simulation target, then controls the receiving and transmitting antenna of the simulation target unit to be in a transmitting mode and transmits feedback signals to the radar, calibrates the amplitude and the reflectivity coefficient of the simulation target through the standard metal ball, calibrates the coordinates of an erection point and the calibration distance of delay time, calibrates the speed through the Doppler frequency, transmits frequency spectrum detection and waveform detection to calibrate the transmitting power, controls the amplitude of the simulation target to calibrate a receiver, and scans a comprehensive calibration device of the weather radar through an antenna of the weather radar, the weather radar comprehensive calibration device detects and records measurable antenna indexes.
In the above technical solution, preferably, the diameter of the metal ball is 22cm-40 cm; and/or the radius of rotation of the metal ball is 25cm-35 mm; and/or the rotating arm is an epoxy resin plate; and/or the balancing weight is a polytetrafluoroethylene balancing weight.
In the technical scheme, the diameter of the metal ball is preferably 30cm, the rotating radius is preferably 30cm, a balancing weight made of polytetrafluoroethylene is placed on the other side of a rotating arm, and the rotating arm is an epoxy plate, so that the moving part does not reflect electromagnetic waves. The rotating arm moves at 1-7 r/s, the corresponding average speed is +/-0.6 m/s- +/-4.2 m/s, and the weather radar can easily detect the speed. The method is characterized in that a standard metal ball is adopted based on an objective calibration principle, and is different from the current subjective calibration based on a simulated target injection mode, the amplitude of a simulated target selected by the subjective calibration belongs to an assumed true value, and the objective calibration of the metal ball has a true value basis.
In any of the above technical solutions, preferably, the driving unit includes a motor, a driving wheel and a driven wheel engaged with each other, and an angle sensor, and the driving wheel is mounted on the motor, and the driven wheel is connected to the rotating arm, wherein the motor can drive the driven wheel to rotate coaxially with the rotating arm through the driving wheel, and the angle sensor is mounted on a rotating shaft of the driven wheel and the rotating arm to detect the rotation angle information of the rotating arm.
In any of the above technical solutions, preferably, the analog target unit transceiving antenna includes: the system comprises a simulation target unit receiving antenna and a receiving antenna servo device connected with the simulation target unit receiving antenna, wherein the simulation target unit receiving antenna is a broadband dual-polarization antenna; the device comprises a simulation target unit polarization scanning antenna and a polarization scanning antenna servo device connected with the simulation target unit polarization scanning antenna; and the code disc is connected with the polarization scanning antenna of the analog target unit and is set for controlling the polarization scanning angle.
In the technical scheme, the receiving and transmitting antenna of the analog target unit is a double antenna and is separately arranged, the receiving antenna of the analog target unit is a broadband dual-polarization antenna, a 50-degree wide beam is formed, the beam modulation error of the radar antenna by the analog target antenna is reduced as much as possible, two paths of signals of vertical polarization and horizontal polarization are output, and the signals are transmitted to the receiver for amplification, frequency mixing and filtering. The transmitting antenna of the analog target unit is a polarization scanning antenna, polarization scanning can be carried out in the range of 0-180 degrees, the scanning angle is accurately read by a code disc, and the receiving and transmitting antenna of the calibrator is combined with a standard metal ball to realize the full-parameter calibration of the dual-polarization weather radar. The outside of the calibration instrument antenna is provided with a radiation mark for prompting to avoid shielding in the front, and the inside of the calibration instrument antenna is a polarization scanning antenna.
In any of the above technical solutions, preferably, the code wheel is a 16-bit code wheel.
In the technical scheme, the polarization scanning angle can be accurately controlled through the 16-bit code disc and the servo control circuit.
In any of the above technical solutions, preferably, the method further includes: the driving unit, the simulation target unit transceiving antenna and the control unit are arranged in the shell; the antenna housing is covered on the shell, and the rotating arm, the balancing weight and the metal ball are positioned in a cavity formed by the antenna housing and the shell; and the automatic leveling device is arranged on the shell, and the control unit is connected with the automatic leveling device.
According to the technical scheme, the automatic leveling device can achieve automatic leveling of the calibration mechanism, and after the automatic leveling, the weather radar comprehensive calibration device can work normally.
In any of the above technical solutions, preferably, the automatic leveling device includes: the support legs are arranged on the shell, and included angles between every two adjacent support legs are the same; the regulator is arranged on each support leg, and the control unit is connected with the regulator; and the inclination angle sensor is connected with the control unit, detects the inclination angle information of the calibration mechanism, and the control unit levels the calibration mechanism according to the inclination angle information.
In the technical scheme, the inclination angle information is sent to the automatic leveling control circuit through three support legs on the automatic leveling device, an adjuster and a sensor on each support leg, the automatic leveling is realized through closed-loop control, and after the automatic leveling, the calibration instrument can work normally.
In any of the above technical solutions, preferably, the lifting mechanism is a sleeve cylinder type hydraulic electric lifting table.
In the technical scheme, the open and shelterless ground is selected, the erection height and the radar height meet the visibility requirement, the weather radar comprehensive calibration device is erected through the lifting mechanism, and the visibility measuring instrument is adopted to measure the visibility condition, so that the accuracy of the calibration device is ensured.
In any of the above solutions, preferably, the maximum height of the lifting mechanism is 20 meters.
In the technical scheme, the transportation convenience can be selected generally within 25Km for a plain radar station, and an erection point for withdrawing is convenient to erect.
In any of the above technical solutions, preferably, the lifting device further includes a plurality of pulling ropes connected to the lifting mechanism, and angles between two adjacent pulling ropes are the same.
In the technical scheme, the erection lifting mechanism adopts sleeve cylinder type hydraulic electric lifting, the maximum lifting limit is 20m, 5-level wind can be resisted without a pull rope, more than 8-level wind can be resisted after the pull rope is added, and the erection lifting mechanism is generally provided with a steel wire pull rope which is used as an erection standard requirement and is required to be installed with the pull rope.
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 structural diagram of a weather radar integrated calibration apparatus according to an embodiment of the present invention;
fig. 2 shows a structural diagram of a calibration mechanism according to an embodiment of the present invention;
fig. 3 shows a cross-sectional view of a calibration mechanism according to an embodiment of the present invention;
fig. 4 shows a structural diagram of a drive unit according to an embodiment of the present invention;
fig. 5 is a block diagram of an analog target unit transmitting/receiving antenna according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of an analog target unit transmitting/receiving antenna according to an embodiment of the present invention;
wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
the device comprises a base 10, a rotating arm 20, a metal ball 30, a balancing weight 40, a motor 502, a driving wheel 504, a driven wheel 506, a target unit receiving antenna 602 simulation, a target unit polarization scanning antenna 604 simulation, a code disc 606, a driving motor 608, a shell 70, a radome 80, a stand 902, a 904 adjuster and a 100 lifting mechanism.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
A weather radar integrated calibration apparatus according to some embodiments of the present invention is described below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, according to the utility model discloses a calibration device is synthesized to weather radar, including base 10, the elevating system 100 of setting on base 10 and install the calibration mechanism on elevating system 100, the calibration mechanism includes rocking arm 20 and the rotatory drive unit of drive rocking arm 20, be equipped with metal ball 30 on rocking arm 20, the position department symmetrical with metal ball 30 on rocking arm 20 is provided with balancing weight 40, the calibration mechanism still includes the control unit (not shown) and the simulation target unit send-receive antenna that is connected with the control unit, the drive unit is connected with the control unit.
In this embodiment, the control unit can control the standard metal ball 30 to reciprocate along the radial direction of the weather radar at a high speed to generate Doppler frequency detected by the weather radar, the control unit simultaneously controls the transceiver antenna of the analog target unit to be in a receiving mode, receives radar transmitting signals through two channels, performs digital frequency storage, delay and Doppler modulation to form an analog target, the control unit controls the transceiver antenna of the analog target unit to be in a transmitting mode and transmits feedback signals to the radar, the standard metal ball 30 calibrates the amplitude and reflectivity coefficient of the analog target, and sets up point coordinates and delay time calibration distance, the Doppler frequency calibration speed is used to send received echoes to the spectrum detection and waveform detection to calibrate transmitting power, the receiver is calibrated by controlling the amplitude of the analog target, the antenna of the weather radar scans the integrated calibration device, the weather radar comprehensive calibration device detects and records measurable antenna indexes.
The utility model provides a still can set up communication module among the calibration device is synthesized to weather radar, it can realize long-range unmanned control and long-range unmanned on duty online calibration of erectting, and this communication module can be at least one kind in wiFi, bluetooth, infrared and the wired network.
The weather radar comprehensive calibration device mainly comprises two parts, namely hardware and software, wherein the hardware part comprises a calibration mechanism, a lifting mechanism, a simulation target unit transceiving antenna, a control unit and the like; the software part comprises calibration control software, antenna test software, emission test software, reception test software, online detection and fault alarm software, remote debugging control software, system parameter calibration software and the like, and can be inherited in the control unit.
Specifically, the diameter of the metal ball 30 is 22cm to 40 cm; and/or the radius of rotation of the metal ball 30 is 25cm-35 mm; and/or the arm 20 is an epoxy board; and/or the weight 40 is a teflon weight 40.
In this embodiment, the metal ball 30 has a diameter of preferably 30cm and a radius of rotation of preferably 30cm, and a weight 40 made of teflon is placed on the other side of the rotating arm 20, and the rotating arm 20 is an epoxy plate so that the moving part does not reflect electromagnetic waves. The rotating arm 20 moves at 1-7 r/s, the corresponding average speed is +/-0.6 m/s- +/-4.2 m/s, and the weather radar can easily detect the speed. The standard metal ball 30 is adopted based on an objective calibration principle, which is different from the current subjective calibration based on a simulated target injection mode, the amplitude of the simulated target selected by the subjective calibration belongs to an assumed true value, and the objective calibration of the metal ball 30 has a true value basis.
As shown in fig. 4, according to another embodiment of the present invention, the driving unit includes a motor 502, a driving wheel 504 and a driven wheel 506 engaged with each other, and an angle sensor (not shown) installed on the motor 502, the driven wheel 506 is connected to the rotating arm 20, wherein the motor 502 can drive the driven wheel 506 to rotate coaxially with the rotating arm 20 via the driving wheel 504, and the angle sensor is installed on the rotating shaft of the driven wheel 506 and the rotating arm 20 to detect the rotation angle information of the rotating arm 20.
In this embodiment, the calibration mechanism is an azimuth turntable; the gear is driven by a motor; one end is provided with a metal ball and rotates, and the other end is provided with a balance weight, so that the transmission process is stable, and the centrifugal force and the vibration are reduced.
As shown in fig. 2, 5 and 6, according to the utility model discloses a calibration device is synthesized to weather radar of still another embodiment, simulation target unit transceiver antenna includes: the system comprises an analog target unit receiving antenna 602 and a receiving antenna servo device connected with the analog target unit receiving antenna 602, wherein the analog target unit receiving antenna 602 is a broadband dual-polarization antenna; a simulated target unit polarization scanning antenna 604 and a polarization scanning antenna servo device connected with the simulated target unit polarization scanning antenna 604; a code wheel 606 connected with the analog target unit polarization scanning antenna 604, the code wheel 606 being configured to control a polarization scanning angle; wherein, the code wheel 606 is a 16-bit code wheel 606.
In this embodiment, the analog target unit receiving antenna is a dual antenna, the receiving antenna is a broadband dual-polarization antenna, the receiving antenna 602 is a 50 ° wide beam, the beam modulation error of the radar antenna by the analog target antenna is reduced as much as possible, two signals of vertical polarization and horizontal polarization are output, and the signals are transmitted to the receiver for amplification, frequency mixing and filtering. The emission antenna of the analog target unit is a polarization scanning antenna, polarization scanning can be carried out in the range of 0-180 degrees, the scanning angle is accurately read by the coded disc 606, and the polarization scanning angle can be accurately controlled by the 16-bit coded disc 606 and the servo control circuit; the calibration instrument transceiver antenna is combined with the standard metal ball 30 to realize the full-parameter calibration of the dual-polarization weather radar. The outside of the calibration instrument antenna is provided with a radiation mark for prompting to avoid shielding in the front, and the inside of the calibration instrument antenna is a polarization scanning antenna.
In this embodiment, the analog target unit transmit-receive antenna adopts a microstrip antenna, and the analog target unit polarization scanning antenna 604 is an adjustable antenna and can perform polarization rotation through the driving motor 608; the analog target unit receiving antenna 602 is a fixed antenna and is in 45-degree oblique polarization; the two antennas are positioned on the same plane, and the distance between the antennas is 160 mm.
As shown in fig. 2 and 3, according to the utility model discloses calibration device is synthesized to weather radar of fourth embodiment still includes: a housing 70, in which the driving unit, the simulation target unit transceiving antenna and the control unit are installed; the antenna housing 80 is covered on the shell 70, and the rotating arm 20, the balancing weight 40 and the metal ball 30 are positioned in a cavity formed by the antenna housing 80 and the shell 70; and an automatic leveling device arranged on the shell 70, wherein the control unit is connected with the automatic leveling device.
In the embodiment, the automatic leveling device can realize the automatic leveling of the calibration mechanism, and after the automatic leveling, the weather radar comprehensive calibration device can work normally.
Specifically, the automatic leveling device includes: a plurality of support legs 902 disposed on the housing 70, and the included angles between two adjacent support legs 902 are the same; an adjuster 904 provided on each leg 902, the control unit being connected to the adjuster 904; and the inclination angle sensor (not shown) is connected with the control unit, detects the inclination angle information of the calibration mechanism, and the control unit levels the calibration mechanism according to the inclination angle information.
In this embodiment, the three support legs 902 of the auto-leveling device, the regulator 904 of each support leg 902, the sensor and the like transmit the inclination angle information to the auto-leveling control circuit, the auto-leveling is realized by closed-loop control, and after the auto-leveling, the calibration instrument can work normally.
As shown in fig. 1, according to the weather radar integrated calibration apparatus of the fifth embodiment of the present invention, the lifting mechanism 100 is a sleeve cylinder type hydraulic electric lifting platform; wherein the maximum height of the lifting mechanism 100 is 20 meters.
In the embodiment, a wide and unobstructed ground is selected, the erection height and the radar height meet the visibility requirement, the weather radar comprehensive calibration device is erected through the lifting mechanism, and the visibility condition is measured by adopting the visibility measuring instrument, so that the accuracy of the calibration device is ensured; the plain radar station can select convenient traffic and is convenient to erect and withdraw erection points within 25Km generally, and a 20m high-lift mechanism needs to be erected due to the fact that many trees are arranged in the plain, so that the calibration instrument and the radar can be seen through, and the condition that no double-pass attenuation exists in clear air environment is guaranteed.
The perspective means that the electromagnetic wave space between two points is transmitted without a shielding object, the transmission attenuation is '0', the electromagnetic wave is shielded by buildings, mountains and the like when the radar electromagnetic wave scans at a pitch angle of 0 degrees, shadow areas can be formed by the shielding of the buildings and the mountains, target echoes do not exist in the shadow areas, the characteristics are obvious, but trees and the like are shielded without obvious shadow areas and show certain attenuation, the range is 1 dB-10 dB or more, the probability of the trees shielding areas below 20m is very high, the trees shielding areas above 50m are basically not attenuated by the trees, the S-C-X waveband visibility measuring instrument is special equipment for measuring visibility conditions, the propagation attenuation caused by the trees shielding is generally not more than 0.2dB, the calibration device is erected above the erection height of less than 0.2dB when the tree shelter meets the basic requirement of point selection for erecting the calibration device.
The plain radar station can select convenient traffic and is convenient to erect and withdraw erection points within 25Km generally, and a 20m high-lift mechanism needs to be erected due to the fact that many trees are arranged in the plain, so that the calibration instrument and the radar can be seen through, and the condition that no double-pass attenuation exists in clear air environment is guaranteed. And if the erection condition meets the requirement of the visibility, the minimum visibility height can be measured by the S-C-X wave band visibility measuring instrument, and if the minimum visibility height does not meet 20m, points are reselected according to the strongest region of the clutter map, so that the ordinary plain radar station can easily select 20m visibility height erection points.
According to the utility model discloses calibration device is synthesized to weather radar of sixth embodiment still includes a plurality of stay cords (not shown), is connected with elevating system 100, and the angle between two adjacent stay cords is the same.
In the embodiment, the erection lifting mechanism adopts sleeve cylinder type hydraulic electric lifting, the maximum lifting limit is 20m, 5-level wind can be resisted without a pull rope, more than 8-level wind can be resisted after the pull rope is added, and a steel wire pull rope is generally matched as the requirement of erection specification and the pull rope must be installed.
Calibration device frame of high mountain radar station
Working according to the radar pitch angle of 0 degrees, the beam width is 1 degree, the coverage height difference of the lower edge of the beam is 218m at the position 25Km away from the radar, namely, the lower edge of the beam is more than 218m lower than the erection point and can be covered by the radar beam, the coverage height difference of the lower edge of the beam at the position 50Km away from the radar is 436m, namely, the lower edge of the beam is more than 50Km away and more than 416m lower than the erection point and can be covered by the radar beam, and the erection point of the comprehensive calibration device is formed.
If the minimum pitch angle of the radar points to 0.5 degrees and the beam width is calculated to be 1 degree, the coverage height difference of the lower edge of the beam is 436m at a position 25Km away from the radar, the coverage height difference of the lower edge of the beam is 972m at a position 50Km away from the radar, namely the height which is lower than an erection point by more than 972m is covered by the radar beam, so that the erection point with better visibility condition can be always found on the ground in a 1000m isolated mountain.
The erection point of the high-mountain radar station is usually in a mountainous area, and the mountainous area is characterized in that mountains are connected with one another, isolated mountain heads are few, isolated mountain heads exist in coastal areas, but the altitude of the mountain heads is not high and is usually below 300m, and the ground or a mountain slope can be always searched for the erection point of the high-mountain radar station within 25Km or even 50Km by combining the above conditions.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., 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 invention. In this specification, the schematic representations of the terms used above 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a calibration device is synthesized to weather radar, includes the base, sets up elevating system on the base and installs calibration mechanism on elevating system, its characterized in that: the calibration mechanism comprises a rotating arm and a driving unit for driving the rotating arm to rotate, wherein a metal ball is arranged on the rotating arm, balancing weights are arranged at positions on the rotating arm, which are symmetrical to the metal ball, the calibration mechanism further comprises a control unit and a simulation target unit receiving and transmitting antenna connected with the control unit, and the driving unit is connected with the control unit.
2. The weather radar comprehensive calibration device of claim 1, wherein: the diameter of the metal ball is 22cm-40 cm; and/or the radius of rotation of the metal ball is 25cm-35 mm; and/or the rotating arm is an epoxy resin plate; and/or the balancing weight is a polytetrafluoroethylene balancing weight.
3. The weather radar comprehensive calibration device as claimed in claim 1 or 2, wherein: the driving unit comprises a motor, a driving wheel, a driven wheel and an angle sensor, the driving wheel and the driven wheel are meshed with each other, the driving wheel is mounted on the motor, the driven wheel is connected with the rotating arm, the motor can drive the driven wheel to rotate coaxially with the rotating arm through the driving wheel, and the angle sensor is mounted on rotating shafts of the driven wheel and the rotating arm so as to detect rotating angle information of the rotating arm.
4. The weather radar comprehensive calibration device as claimed in claim 1 or 2, wherein: the analog target unit transceiving antenna includes:
the system comprises a simulation target unit receiving antenna and a receiving antenna servo device connected with the simulation target unit receiving antenna, wherein the simulation target unit receiving antenna is a broadband dual-polarization antenna;
the device comprises a simulation target unit polarization scanning antenna and a polarization scanning antenna servo device connected with the simulation target unit polarization scanning antenna;
and the code disc is connected with the polarization scanning antenna of the analog target unit and is set to control a polarization scanning angle.
5. The weather radar comprehensive calibration device of claim 4, wherein: the coded disc is a 16-bit coded disc.
6. The weather radar integrated calibration apparatus as claimed in claim 1 or 2, further comprising:
the driving unit, the simulation target unit transceiving antenna and the control unit are arranged in the shell;
the antenna housing is covered on the shell, and the rotating arm, the balancing weight and the metal ball are positioned in a cavity formed by the antenna housing and the shell;
and the automatic leveling device is arranged on the shell, and the control unit is connected with the automatic leveling device.
7. The weather radar integrated calibration apparatus of claim 6, wherein the auto-leveling apparatus comprises:
the supporting legs are arranged on the shell, and included angles between every two adjacent supporting legs are the same;
the regulator is arranged on each support leg, and the control unit is connected with the regulator;
and the inclination angle sensor is connected with the control unit, the inclination angle sensor detects the inclination angle information of the calibration mechanism, and the control unit levels the calibration mechanism according to the inclination angle information.
8. The weather radar integrated calibration device as claimed in claim 1 or 2, wherein the lifting mechanism is a telescopic hydraulic electric lifting platform.
9. The weather radar comprehensive calibration device as claimed in claim 1 or 2, wherein: the maximum height of the lifting mechanism is 20 meters.
10. The weather radar comprehensive calibration device as claimed in claim 1 or 2, further comprising a plurality of pull ropes connected to the lifting mechanism, wherein angles between two adjacent pull ropes are the same.
Priority Applications (1)
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| CN201921034372.0U CN210572722U (en) | 2019-07-04 | 2019-07-04 | Comprehensive calibration device for weather radar |
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| CN201921034372.0U CN210572722U (en) | 2019-07-04 | 2019-07-04 | Comprehensive calibration device for weather radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109771A (en) * | 2021-03-18 | 2021-07-13 | 中国气象局气象探测中心 | Calibration device for calibrator and weather radar echo intensity true value calibration method |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109771A (en) * | 2021-03-18 | 2021-07-13 | 中国气象局气象探测中心 | Calibration device for calibrator and weather radar echo intensity true value calibration method |
| CN113109771B (en) * | 2021-03-18 | 2023-06-06 | 中国气象局气象探测中心 | Calibration device for calibration instrument and true value calibration method for weather radar echo intensity |
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