CN110231669A - A kind of the ground radiometer and its calibrating method of real-time calibration - Google Patents
A kind of the ground radiometer and its calibrating method of real-time calibration Download PDFInfo
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- CN110231669A CN110231669A CN201910478002.4A CN201910478002A CN110231669A CN 110231669 A CN110231669 A CN 110231669A CN 201910478002 A CN201910478002 A CN 201910478002A CN 110231669 A CN110231669 A CN 110231669A
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- radiometer
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000013102 re-test Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000005436 troposphere Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/08—Adaptations of balloons, missiles, or aircraft for meteorological purposes; Radiosondes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Radiation Pyrometers (AREA)
Abstract
The present invention provides a kind of ground radiometers of real-time calibration, including host computer, the central processing circuit board being connect with host computer, the stepper motor and receiver being connect with central processing circuit board, the stepper motor is connected with parabola antenna, the receiver is connected with Feed Horn, it is characterized in that, the receiver is formed by connecting by switching noise source, low-noise amplifier, power splitter.The invention also discloses a kind of calibrating methods.The present invention, as room temperature reference source, is cooperated switching noise source as high temperature reference source, realizes two o'clock internal calibration by absorbing load of the switching with low-noise amplifier, while realizing real-time calibration, ground radiometer noiseproof feature will not be made to deteriorate.
Description
Technical field
The present invention relates to Ground-Based Microwave Radiometer field, in particular to the ground radiometer of a kind of real-time calibration and its calibration
Method.
Background technique
Ground-Based Microwave Radiometer is to be judged using the microwave signal for passively receiving the atmospheric radiation that each height transmits greatly
Temperature degree, humidity variation ground microwave remote sensing equipment, to medium and small scale weather phenomenon, as storm, lightning, heavy rainfall,
Mist, frost and boundary layer turbulent flow have important detection effect.Ground-Based Microwave Radiometer the temperature of troposphere section, humidity and
Liquid water, weather and climate model research, wet/dry delay of hygienic trace (GPS, Galileo) and moisture profile, nowcasting are big
Gas stability (diastrous weather detection), temperature retrieval detection, mist, air pollution, absolute calibration cloud radar, wet/dry delay change
Positive VLBI has important application, it has also become the important detection means outside sounding balloon and weather radar.Ground-Based Microwave Radiometer by
In it with capacity of working on one's own, and it can be suitable for automatic weather station in almost various environmental condition work, be usually used in inverting
Complete atmospheric outline, inverting data and initial data all save.
Fig. 1 is ground principle of radiometer block diagram, and radiometer observes room temperature reference source by antenna and switching noise source is cooperated to cut
Change the calibration realized to radiometer.Since ground radiometer is a linear system, straight line theory, spoke are determined by two o'clock
Meter two reference source reference points of need of work are penetrated, traditional temperature and humidity profile ground radiometer is made using external absorbing material
For room temperature reference source, receiver internal switch noise source is cooperated to realize two-point calibration (Fig. 1), later RPG company in order to
To the real-time internal standard of radiometer, switching isolator joined inside receiver, by using switching noise source and switching isolator
Two o'clock internal calibration mode, which is realized, calibrates (Fig. 2) to radiometer system.
Main bottleneck existing for traditional foundation calibration of radiometer mode is:
The calibration scheme of external blackbody calibration source cooperation receiver internal switch noise source cooperation is needed to pass through antenna
Designated position calibration is turned to, it can not real-time calibration；
RPG company switching isolator and switching noise source two o'clock internal calibration scheme solve the problems, such as real-time calibration, but mesh
Front case is that the switching isolator ground certainly based on RPG company is technical foundation, and switching isolator technology only has RPG company at present
It grasps, belongs to technical monopoly；
Switching isolator, which is added, in RPG company two o'clock internal calibration scheme can be such that radiometer noiseproof feature deteriorates to a certain extent.
Summary of the invention
(1) technical problems to be solved
It solves the above problems, the present invention provides the ground radiometer and its calibrating method of a kind of real-time calibration.
(2) technical solution
A kind of ground radiometer of real-time calibration, including host computer, the central processing circuit board being connect with host computer, with
The stepper motor and receiver of central processing circuit board connection, the stepper motor are connected with parabola antenna, the reception
Machine is connected with Feed Horn, and the receiver is by switching noise source, absorbing load, low-noise amplifier, switch module and function point
Device is formed by connecting, and realizes two o'clock real-time calibration by switching the switching between absorbing load and switching noise source.
Further, the switch module common end connects low-noise amplifier, and the both ends of the other side connect switch respectively and make an uproar
Sound source and absorbing load, the low-noise amplifier are connect with power splitter, and the switching noise source is connect with Feed Horn.
Further, switch module common end is connect with power splitter, and the both ends of the other side are connected separately with switching noise source
And absorbing load, low-noise amplifier is equipped between the switching noise source and absorbing load and switch module.
Calibrating method is specifically: placing liquid nitrogen and room temperature black matrix in antenna for radiometer mouth face before factory, carries out to radiometer
Outside calibration, it is logical that the equivalent bright mild switch opening that re-test obtains switching noise source noise injection state is switched to absorbing load
The equivalent bright temperature in road carries out two-point calibration；The switching noise source obtained into working condition by test and absorbing load are as fixed
Mark source carries out real-time two-point calibration to radiometer.
(3) beneficial effect
1, the technical monopoly of switching isolator has been broken；
2, due to being that calibration is realized in electronic switch switching, the real-time calibration of ground radiometer may be implemented；
3, additional noise will not be introduced and deteriorates the noiseproof feature of ground radiometer.
Detailed description of the invention
Fig. 1 is the schematic illustration of the prior art；
Fig. 2 is the functional block diagram of RPG company ground radiometer；
Fig. 3 is the schematic illustration of an embodiment of the present invention；
Fig. 4 is the schematic illustration of another embodiment of the present invention；
Fig. 5 is the result of calibrating method of the present invention Yu existing calibrating method performance test.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment 1
Refering to Fig. 3, a kind of ground radiometer of real-time calibration, including host computer, the central processing being connect with host computer electricity
Road board, the stepper motor and receiver connecting with central processing circuit board, the stepper motor are connected with parabola antenna,
The receiver is connected with Feed Horn, and the receiver is by switching noise source, absorbing load, low-noise amplifier, switching molding
Block and power splitter are formed by connecting, and the switch module common end connects low-noise amplifier, and the both ends of the other side connect switch respectively
Noise source and absorbing load, the low-noise amplifier are connect with power splitter, and the switching noise source is connect with Feed Horn.
Calibrating method is specifically: placing liquid nitrogen and room temperature black matrix in antenna for radiometer mouth face before factory, carries out to radiometer
Outside calibration, it is logical that the equivalent bright mild switch opening that re-test obtains switching noise source noise injection state is switched to absorbing load
The equivalent bright temperature in road carries out two-point calibration；The switching noise source obtained into working condition by test and absorbing load are as fixed
Mark source carries out real-time two-point calibration to radiometer.
Embodiment 2
Refering to Fig. 4, a kind of ground radiometer of real-time calibration, including host computer, the central processing being connect with host computer electricity
Road board, the stepper motor and receiver connecting with central processing circuit board, the stepper motor are connected with parabola antenna,
The receiver is connected with Feed Horn, and the receiver is by switching noise source, absorbing load, low-noise amplifier, switching molding
Block and power splitter are formed by connecting, and switch module is equipped between the low-noise amplifier and power splitter, and the switch module is public
End connection power splitter, the both ends of the other side connect switching noise source and absorbing load, the switch module and switching noise source respectively
Between be equipped with low-noise amplifier, between the switch module and absorbing load be equipped with low-noise amplifier.
In order to guarantee system conformance, level-one low-noise amplifier is equally added in absorbing load and switch module, thus
Under the premise of not influencing noiseproof feature, the calibration of system room temperature is realized, two o'clock internal calibration is realized in cooperation switching noise source.
Calibrating method is specifically: placing liquid nitrogen and room temperature black matrix in antenna for radiometer mouth face before factory, carries out to radiometer
Outside calibration, it is logical that the equivalent bright mild switch opening that re-test obtains switching noise source noise injection state is switched to absorbing load
The equivalent bright temperature in road carries out two-point calibration；The switching noise source obtained into working condition by test and absorbing load are as fixed
Mark source carries out real-time two-point calibration to radiometer.
Two o'clock internal calibration scheme of the present invention is calibrated by absorbing load of the switching with low-noise amplifier as room temperature
Two o'clock internal calibration is realized as high temperature reference source in source, cooperation switching noise source.Novel two-point calibration scheme can be realized fixed in real time
Mark, and ground radiometer noiseproof feature will not be made to deteriorate, the result of calibrating method of the present invention and existing calibrating method performance test
As shown in Figure 5.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. the ground radiometer of a kind of real-time calibration, including host computer, the central processing circuit board being connect with host computer, in
The stepper motor and receiver of the connection of processing circuit board are entreated, the stepper motor is connected with parabola antenna, the receiver
It is connected with Feed Horn, which is characterized in that the receiver is by switching noise source, absorbing load, low-noise amplifier, switching molding
Block and power splitter are formed by connecting, and realize two o'clock real-time calibration by switching the switching between absorbing load and switching noise source.
2. the ground radiometer of real-time calibration as described in claim 1, it is characterised in that: the switch module common end connection
Low-noise amplifier, the both ends of the other side connect switching noise source and absorbing load, the low-noise amplifier and power splitter respectively
Connection, the switching noise source is connect with Feed Horn.
3. the ground radiometer of real-time calibration as described in claim 1, it is characterised in that: the switch module common end and function
Divide device connection, the both ends of the other side are connected separately with switching noise source and absorbing load, and the switching noise source and absorption are negative
It carries and is equipped with low-noise amplifier between switch module.
4. the calibrating method of the ground radiometer of real-time calibration described in claims 1 or 2 or 3, it is characterised in that: factory before
Liquid nitrogen and room temperature black matrix are placed in antenna for radiometer mouth face, carry out external calibration to radiometer, re-test obtains switching noise source and makes an uproar
The equivalent bright mild switch of sound injection state opens the equivalent bright temperature progress two-point calibration for being switched to absorbing load channel；Into work
Make state, the switching noise source that obtained by test and absorbing load carry out real-time two-point calibration to radiometer as reference source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478002.4A CN110231669A (en) | 2019-06-03 | 2019-06-03 | A kind of the ground radiometer and its calibrating method of real-time calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910478002.4A CN110231669A (en) | 2019-06-03 | 2019-06-03 | A kind of the ground radiometer and its calibrating method of real-time calibration |
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| Publication Number | Publication Date |
|---|---|
| CN110231669A true CN110231669A (en) | 2019-09-13 |
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| CN201910478002.4A Withdrawn CN110231669A (en) | 2019-06-03 | 2019-06-03 | A kind of the ground radiometer and its calibrating method of real-time calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917408A (en) * | 2021-09-15 | 2022-01-11 | 哈尔滨吉赫科技有限责任公司 | Non-correlated wave beam random signal carrier space power-directional diagram synthesis device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166689Y (en) * | 2008-01-24 | 2008-12-17 | 武汉安德瑞科技有限公司 | High precision microwave radiometer |
| CN102243304A (en) * | 2010-05-14 | 2011-11-16 | 中国科学院空间科学与应用研究中心 | Foundation-based atmosphere profile microwave detector |
| CN103616567A (en) * | 2013-11-27 | 2014-03-05 | 西安电子工程研究所 | Multi-channel microwave radiation measuring device |
| CN104793216A (en) * | 2014-01-22 | 2015-07-22 | 中国科学院空间科学与应用研究中心 | Ground-based multi-channel microwave radiation meter based on meteorological detection |
| CN105372610A (en) * | 2015-10-27 | 2016-03-02 | 中国科学院国家空间科学中心 | Four-point scaling device and method for microwave radiometer |
| CN107942146A (en) * | 2017-10-31 | 2018-04-20 | 西安空间无线电技术研究所 | A kind of microwave radiometer antenna radiation efficiency test method and system |
| CN108267739A (en) * | 2016-12-30 | 2018-07-10 | 中国科学院国家空间科学中心 | A kind of Ground-Based Microwave Radiometer and its calibrating method, Atmospheric Survey method |
-
2019
- 2019-06-03 CN CN201910478002.4A patent/CN110231669A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166689Y (en) * | 2008-01-24 | 2008-12-17 | 武汉安德瑞科技有限公司 | High precision microwave radiometer |
| CN102243304A (en) * | 2010-05-14 | 2011-11-16 | 中国科学院空间科学与应用研究中心 | Foundation-based atmosphere profile microwave detector |
| CN103616567A (en) * | 2013-11-27 | 2014-03-05 | 西安电子工程研究所 | Multi-channel microwave radiation measuring device |
| CN104793216A (en) * | 2014-01-22 | 2015-07-22 | 中国科学院空间科学与应用研究中心 | Ground-based multi-channel microwave radiation meter based on meteorological detection |
| CN105372610A (en) * | 2015-10-27 | 2016-03-02 | 中国科学院国家空间科学中心 | Four-point scaling device and method for microwave radiometer |
| CN108267739A (en) * | 2016-12-30 | 2018-07-10 | 中国科学院国家空间科学中心 | A kind of Ground-Based Microwave Radiometer and its calibrating method, Atmospheric Survey method |
| CN107942146A (en) * | 2017-10-31 | 2018-04-20 | 西安空间无线电技术研究所 | A kind of microwave radiometer antenna radiation efficiency test method and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113917408A (en) * | 2021-09-15 | 2022-01-11 | 哈尔滨吉赫科技有限责任公司 | Non-correlated wave beam random signal carrier space power-directional diagram synthesis device and method |
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Application publication date: 20190913 |