A method for calibrating the strength of q-band receiver
A calibration method and receiver technology, which is applied in receiver monitoring and other directions, can solve the problem that the noise injection mode is not easy to implement, and achieve the effects of significantly improved calibration efficiency, good stability, and high precision
Active Publication Date: 2020-05-12
XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] Millimeter wave calibration, due to the miniaturization of microwave devices in the millimeter wave band, the noise injection mode is not easy to implement, and this method may introduce additional noise to the entire receiver system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0034] A method for calibrating the strength of a Q-band receiver according to the present invention, the device involved in the method is composed of a Dewar 1, a vacuum window 2, a first feed source 3, a second feed source 4, a first rotating shaft 5, a second Rotary shaft 6, first rotating arm 7, second rotating arm 8, first motor 9, second motor 10, 300K blackbody 11, 400K blackbody 12, 300K blackbody table 13, 400K blackbody cavity 14 (such as figure 1 ), a vacuum window 2 is opened on the top of Dewar 1 (such as image 3 ), the first feed source 3 and the second feed source 4 are placed parallel to each other inside the Dewar 1 (such as Figure 4 ), the bell mouths of the first feed source 3 and the second feed source 4 face the vacuum window 2 and are flush with it, the first motor 9 is connected with the bottom of the first rotating shaft 5, and the top of the first rotating shaft 5 is connected with the The first rotating arm 7 is connected, and the other end of the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a Q-waveband receiver intensity calibration method. A device, which the method relates to, consists of a Dewar, a vacuum window, a first feed source, a second feed source, a first rotating shaft, a second rotating shaft, a first rotating arm, a second rotating arm, a first motor, a second motor, a 300-K black body, a 400-K black body, a 300-K black body platform and a 400-K black body cavity. According to the method, a stepping motor and a connecting mechanism are arranged on the two sides of the receiver Dewar correspondingly, and two black body loads with different temperature are adjusted to rotate to the appointed position through rotation of the motor, the two black body loads with different temperature cover the feed sources of two wave beams of the Q-waveband receiver correspondingly in the observation process, and the temperature of the black bodies and the power output of the corresponding wave beams are tested accurately, so that accurate intensity calibration is conducted. The method is high in precision and high in stability, the calibration efficiency is obviously improved, and the requirement of performing rapid intensity calibration on the Q-waveband double-wave-beam receiver in the observation process is met.
Description
technical field [0001] The invention relates to an accurate and rapid intensity calibration method for a Q-band double-beam receiver in the observation process, which is specially used for the intensity calibration of the Q-band receiver. Background technique [0002] Radio astronomy is an important research field in astronomy. In radio astronomy, it is distinguished by the electromagnetic wave band, and millimeter wave astronomy is a branch of astronomical observation that uses the millimeter wave band (wavelength 1-10 mm). In the 1950s, a series of small millimeter-wave radio telescopes were successfully developed in the world. Millimeter-wave radio astronomy developed until the 1970s, and it had become a new field of measured astronomy at that time. Cosmic radio wave information in the millimeter wave band is used to study the distribution of interstellar clouds, star formation and evolution, the structure of the Milky Way, galaxies and cosmology, and to study solar sys...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/21
CPCH04B17/21
Inventor 王凯陈卯蒸马军闫浩曹亮项斌斌袁野李笑飞
Owner XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI