JPS57116264A - Receiver for microwave radiometer - Google Patents

Receiver for microwave radiometer

Info

Publication number
JPS57116264A
JPS57116264A JP56002774A JP277481A JPS57116264A JP S57116264 A JPS57116264 A JP S57116264A JP 56002774 A JP56002774 A JP 56002774A JP 277481 A JP277481 A JP 277481A JP S57116264 A JPS57116264 A JP S57116264A
Authority
JP
Japan
Prior art keywords
noise
voltage
receiver
differential amplifier
generated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56002774A
Other languages
Japanese (ja)
Other versions
JPS6331057B2 (en
Inventor
Yoshiatsu Machino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56002774A priority Critical patent/JPS57116264A/en
Publication of JPS57116264A publication Critical patent/JPS57116264A/en
Publication of JPS6331057B2 publication Critical patent/JPS6331057B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/006—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of the effect of a material on microwaves or longer electromagnetic waves, e.g. measuring temperature via microwaves emitted by the object

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To improve resolution of an A/D converter by providing the circuit comprising a differential amplifier, a memory circuit, and a D/A converter in the receiver for the remote sensing microwave radiometer, and removing the noise generated in the receiver. CONSTITUTION:When a switch 2 is switched to a calibrating noise source side, and a switch 10 is switched to a low temperature noise source side 8, the input voltage which is the sum of the noise level from the noise source 8 and the noise level generated in the receiver is generated at the input of the differential amplifier 12, and the voltage that is proportional to said input voltage is outputted and stored in a memory 11. The soted voltage is inputted to the differential amplifier 12 through the D/A converter 13. Then the switch 10 is switched to the calibrating side and the calibration is performed. Then the switch 2 is switched to the side of an antenna 1, and the observation of the object to be observed is performed. Then the voltage which is obtained by removing the noise voltage generated in the receiver and the noise voltage generated in the low temperature noise source appears in the output of the differential amplifier 12. The output of the differential amplifier 12 when said source 8 is connected is made to be 0V. Thus the resolution of the A/D converter 7 is improved.
JP56002774A 1981-01-12 1981-01-12 Receiver for microwave radiometer Granted JPS57116264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002774A JPS57116264A (en) 1981-01-12 1981-01-12 Receiver for microwave radiometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002774A JPS57116264A (en) 1981-01-12 1981-01-12 Receiver for microwave radiometer

Publications (2)

Publication Number Publication Date
JPS57116264A true JPS57116264A (en) 1982-07-20
JPS6331057B2 JPS6331057B2 (en) 1988-06-22

Family

ID=11538679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002774A Granted JPS57116264A (en) 1981-01-12 1981-01-12 Receiver for microwave radiometer

Country Status (1)

Country Link
JP (1) JPS57116264A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179171A (en) * 1984-09-27 1986-04-22 Agency Of Ind Science & Technol Digital radiometer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115480A (en) * 1974-07-29 1976-02-06 Takeda Riken Ind Co Ltd SUPEKUTORA MUANA RAIZA

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115480A (en) * 1974-07-29 1976-02-06 Takeda Riken Ind Co Ltd SUPEKUTORA MUANA RAIZA

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6179171A (en) * 1984-09-27 1986-04-22 Agency Of Ind Science & Technol Digital radiometer

Also Published As

Publication number Publication date
JPS6331057B2 (en) 1988-06-22

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