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Unmanned aerial vehicle-mounted Ka-band microwave radiometer system

A microwave radiometer, ka-band technology, used in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc. Power consumption and volume reduction effect

Pending Publication Date: 2021-06-04
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a UAV-borne Ka-band microwave radiometer system, which saves the temperature control module and the feedback circuit, reduces the power consumption, and reduces the volume and quality, and solves the problem of large power consumption in the prior art. Large volume and high quality, resulting in a problem of limited use

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  • Unmanned aerial vehicle-mounted Ka-band microwave radiometer system
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  • Unmanned aerial vehicle-mounted Ka-band microwave radiometer system

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] see Figure 1-7 , a UAV-borne Ka-band microwave radiometer system, including a Ka-band antenna, a radio frequency switch, a matching load, a first low-noise amplifier, a second low-noise amplifier, a band-pass filter, a local oscillator, a mixing circuit, and an intermediate frequency Amplifier, variable gain amplifier, square rate detector, video amplifier, AD sampling unit, micro control unit MCU, temperature measurement unit, SD storage module, DA co...

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Abstract

The invention discloses an unmanned aerial vehicle-mounted Ka-band microwave radiometer system. The system comprises a Ka wave band antenna, a radio frequency switch, a matching load, a first low noise amplifier, a second low noise amplifier, a band-pass filter, a local oscillator, a frequency mixing circuit, an intermediate frequency amplifier, a variable gain amplifier, a square law detector, a video amplifier, an AD sampling unit, a micro control unit MCU, a temperature measuring unit, an SD storage module, a DA control circuit, a GPS module, a data unvarnished transmission module DTU and a wireless transmission module. Compared with a traditional constant-temperature design, the unmanned aerial vehicle-mounted Ka-band microwave radiometer system adopts a digital gain automatic compensation algorithm and a multi-point temperature correction algorithm, so that a temperature control module and a feedback circuit can be omitted, the power consumption is reduced, and the size and the mass are reduced.

Description

technical field [0001] The invention relates to the technical fields of digital information processing, sensors and wireless communication, in particular to a Ka-band microwave radiometer system carried by an unmanned aerial vehicle. Background technique [0002] Remote sensing has the characteristics of strong timeliness, continuity, multi-dimensional information, vivid and intuitive, and economical benefits. Microwave plays an indispensable role in global remote sensing. It can pass through clouds and provide information at a certain depth on the surface around the clock. The wavelength range of microwave is 300MHz~300GHz. After the electromagnetic waves in this range interact with ground objects through various interactions (reflection, scattering, radiation), some unique ground feature parameter information can be reflected in its phase, energy and other parameters. Microwave remote sensing is the main technical means to obtain dynamic environmental factors such as atmo...

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Application Information

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IPC IPC(8): G01S13/88G01S13/95
CPCG01S13/88G01S13/953Y02A90/10
Inventor 万祥坤李晓峰姜涛郑兴明
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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