CN202145229U - Calibration source used for microwave radiometer - Google Patents
Calibration source used for microwave radiometer Download PDFInfo
- Publication number
- CN202145229U CN202145229U CN201120237955U CN201120237955U CN202145229U CN 202145229 U CN202145229 U CN 202145229U CN 201120237955 U CN201120237955 U CN 201120237955U CN 201120237955 U CN201120237955 U CN 201120237955U CN 202145229 U CN202145229 U CN 202145229U
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- Prior art keywords
- metal wedge
- temperature
- wedge array
- calibration
- metal
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a calibration source used for microwave radiometer, comprising wave-absorbing material (1), a temperature sensor (4), a liquid nitrogen tank circuit (5), a heating resistor (6), a piece of heat insulation foam (7) and a housing (8). The calibration source is characterized by further comprising a calibration body (9), wherein the calibration body (9) is a one-body metal hexahedron or one-body metal cylinder, the internal of the calibration body (9) is hollowed, a metal wedge array (2) is arranged on a flat external surface of the calibration body (9), and temperature adjusting bodies (3) are arranged on the other external surfaces. The metal wedge array (2) and the temperature adjusting bodies (3) are integrated into one body, that is to say, the temperature adjusting bodies (3) and the metal wedge array (2) are manufactured of out one piece of metal. The structure improves heat transfer efficiency between the temperature adjusting bodies (3) and the metal wedge array (2) and improves work stability of the radiometer calibration source.
Description
Technical field
The utility model relates to a kind of reference source, particularly a kind of reference source that is used for microwave radiometer.
Background technology
Based on the design feature of microwave radiometer, environment of living in and application purpose, domestic and international nearly all service application type satellite-borne microwave radiometer all need can guarantee the accuracy of its remotely-sensed data through too much round calibration at present.The calibration of radiometer source is the device that radiometer is calibrated, sensitivity, the linearity and stability that it can provide a standard signal to be used for the calibration radiation meter.The core in calibration of radiometer source in the past is by temperature adjustment body and radiator.Wherein radiator adopts the mode that applies absorbing material above the metal wedge array mostly.Temperature adjustment body and metal wedge array adopt metal of the same race to make, but separately process, and then both are crimped on together.Though on surface of contact, smear Heat Conduction Material, still exist thermal contact resistance bigger and pockety on the surface of contact of temperature adjustment body and metal wedge array.And this thermal contact resistance face will influence the temperature homogeneity of heat transfer efficiency and radiator.
The utility model content
The utility model purpose is to provide a kind of reference source that is used for microwave radiometer, solves because the influence that thermal contact resistance pockety produces in the face of heat-transfer effect between temperature adjustment body and the metal wedge array.
A kind of reference source that is used for microwave radiometer comprises: absorbing material, temperature sensor, the liquid nitrogen tank circuit, heating resistor, heat insulation foam, shell also comprise: the calibration body.
The calibration body profile is the metal hexahedron or the right cylinder of one machine-shaping, inner hollow; On the flat outside surface of calibration body metal wedge array is arranged, the temperature adjustment body is arranged on all the other outside surfaces.The predetermined portions of the liquid nitrogen tank circuit places the calibration body inner, and remainder places the outside surface of shell.A plurality of heating resistors and temperature adjustment body inwall heat-conducting glue are fixed.A plurality of temperature sensors are evenly distributed on the metal wedge array, and one of them temperature sensor places metal wedge array center.Temperature sensor and metal wedge array heat-conducting glue are fixed.The calibration body places in the heat insulation foam.Shell is the metallic object that opening is arranged at top, and the aperture area of shell is more than or equal to the area of metal wedge array, and heat insulation foam places in the shell.
During work, the temperature of the liquid nitrogen tank circuit and heating resistor control temperature adjustment body, the temperature transfer of temperature adjustment body is to above the metal wedge array, and the temperature above the metal wedge array is delivered to above the absorbing material again.The Temperature Distribution of temperature sensor measurement metal wedge array and absorbing material, the standard noise signal that is used for calibration of radiometer is exported from the metal wedge that has applied absorbing material.
The utility model adopts integrated design with metal wedge array and temperature adjustment body; Promptly on a block of metal, process temperature adjustment body and metal wedge array; The liquid nitrogen tank circuit and heating resistor are placed on temperature adjustment body inside, and on metal wedge array, apply absorbing material.This structure makes and does not have any thermal contact resistance between metal wedge array and the temperature-control bodies; Thereby eliminated owing to metal wedge array and temperature adjustment body are processed the problem that causes on both surface of contact, existing bigger and thermal contact resistance pockety respectively, improved heat transfer efficiency and the job stability in calibration of radiometer source between temperature adjustment body and the metal wedge array.
Description of drawings
A kind of structural representation that is used for the reference source of microwave radiometer of Fig. 1.
1. the absorbing material 2. metal wedge arrays 3. temperature adjustment bodies 4. temperature sensors 5. liquid nitrogen tank circuits 6. heating resistors
7. heat insulation foam 8. shells 9. are calibrated bodies.
Embodiment
A kind of reference source that is used for microwave radiometer comprises: absorbing material 1, temperature sensor 4, the liquid nitrogen tank circuit 5, heating resistor 6, heat insulation foam 7, shell 8 also comprise: calibration body 9.
During work, the temperature of the liquid nitrogen tank circuit 5 and heating resistor 6 control temperature adjustment bodies 3, the temperature transfer of temperature adjustment body 3 is to above the metal wedge array 2, and the temperature above the metal wedge array 2 is delivered to above the absorbing material 1 again.Temperature sensor 4 is measured the Temperature Distribution of metal wedge array 2 and absorbing material 1, and the standard noise signal that is used for calibration of radiometer is exported from the metal wedge that has applied absorbing material 1.
Claims (1)
1. reference source that is used for microwave radiometer, comprising: absorbing material (1), temperature sensor (4), the liquid nitrogen tank circuit (5), heating resistor (6), heat insulation foam (7), shell (8) is characterized in that also comprising: calibration body (9);
Calibration body (9) profile is the metal hexahedron or the right cylinder of one machine-shaping, inner hollow; On the flat outside surface of calibration body (9) metal wedge array (2) is arranged, temperature adjustment body (3) is arranged on all the other outside surfaces; The predetermined portions of the liquid nitrogen tank circuit (5) places calibration body (9) inside, and remainder places the outside surface of shell (8); A plurality of heating resistors (6) are fixed with temperature adjustment body (3) inwall heat-conducting glue; A plurality of temperature sensors (4) are evenly distributed on the metal wedge array (2), and one of them temperature sensor (4) places metal wedge array (2) center; Temperature sensor (4) is fixed with metal wedge array (2) heat-conducting glue; Calibration body (9) places in the heat insulation foam (7); Shell (8) has the metallic object of opening for top, and the aperture area of shell (8) is more than or equal to the area of metal wedge array (2), and heat insulation foam (7) places in the shell;
During work, the temperature of the liquid nitrogen tank circuit (5) and heating resistor (6) control temperature adjustment body (3), the temperature transfer of temperature adjustment body (3) are to above the metal wedge array (2), and the temperature above the metal wedge array (2) is delivered to above the absorbing material (1) again; Temperature sensor (4) is measured the Temperature Distribution of metal wedge array (2) and absorbing material (1), and the standard noise signal that is used for calibration of radiometer is exported from the metal wedge that has applied absorbing material (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237955U CN202145229U (en) | 2011-07-07 | 2011-07-07 | Calibration source used for microwave radiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237955U CN202145229U (en) | 2011-07-07 | 2011-07-07 | Calibration source used for microwave radiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202145229U true CN202145229U (en) | 2012-02-15 |
Family
ID=45581160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120237955U Expired - Fee Related CN202145229U (en) | 2011-07-07 | 2011-07-07 | Calibration source used for microwave radiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202145229U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809737A (en) * | 2012-08-02 | 2012-12-05 | 中国航天科工集团第二研究院二〇三所 | Calibration source microwave window of microwave radiometer |
| CN109473753A (en) * | 2018-11-21 | 2019-03-15 | 北京无线电计量测试研究所 | A kind of periodic array structural radiation body novel microwave window and test method |
| CN110411555A (en) * | 2019-07-05 | 2019-11-05 | 北京无线电计量测试研究所 | A kind of high temperature noise source |
| CN111323136A (en) * | 2020-02-28 | 2020-06-23 | 中国科学院国家空间科学中心 | Liquid nitrogen refrigeration calibration cold source for microwave radiometer |
| CN114281123A (en) * | 2021-11-15 | 2022-04-05 | 北京无线电计量测试研究所 | Automatic temperature control device for microwave radiometer calibration source |
-
2011
- 2011-07-07 CN CN201120237955U patent/CN202145229U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809737A (en) * | 2012-08-02 | 2012-12-05 | 中国航天科工集团第二研究院二〇三所 | Calibration source microwave window of microwave radiometer |
| CN109473753A (en) * | 2018-11-21 | 2019-03-15 | 北京无线电计量测试研究所 | A kind of periodic array structural radiation body novel microwave window and test method |
| CN109473753B (en) * | 2018-11-21 | 2021-07-30 | 北京无线电计量测试研究所 | Novel microwave window of periodic array structure radiator and test method |
| CN110411555A (en) * | 2019-07-05 | 2019-11-05 | 北京无线电计量测试研究所 | A kind of high temperature noise source |
| CN111323136A (en) * | 2020-02-28 | 2020-06-23 | 中国科学院国家空间科学中心 | Liquid nitrogen refrigeration calibration cold source for microwave radiometer |
| CN114281123A (en) * | 2021-11-15 | 2022-04-05 | 北京无线电计量测试研究所 | Automatic temperature control device for microwave radiometer calibration source |
| CN114281123B (en) * | 2021-11-15 | 2022-09-27 | 北京无线电计量测试研究所 | Automatic temperature control device for microwave radiometer calibration source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20150707 |
|
| EXPY | Termination of patent right or utility model |