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Exogenous power-assisted atmospheric ocean remote sensing device and implementation method and working method thereof

An ocean remote sensing and atmospheric technology, which is applied in the directions of measuring devices, climate sustainability, radio wave reflection/reradiation, etc., can solve the problems of low temporal and spatial resolution, low temporal resolution, and small effective width

Active Publication Date: 2020-08-04
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the deficiencies in the prior art, the present invention provides an external source-assisted atmospheric ocean remote sensing device and its implementation method and working method. It adopts a multi-beam phased array antenna based on DBF technology to reflect multiple mirror reflection areas on the earth's surface. For coverage, the swath of the load is effectively expanded by increasing the number of beams. At the same time, the problem of low spatial-temporal resolution is improved by using high-gain antennas, and the traditional altimetry load has few beams, small effective width, and low Low time resolution, low spatial resolution, high cost, high weight and power consumption

Method used

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  • Exogenous power-assisted atmospheric ocean remote sensing device and implementation method and working method thereof
  • Exogenous power-assisted atmospheric ocean remote sensing device and implementation method and working method thereof
  • Exogenous power-assisted atmospheric ocean remote sensing device and implementation method and working method thereof

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Embodiment 1

[0128] Such as figure 1 As shown, the present invention discloses an external source-assisted atmosphere and ocean remote sensing device, including an antenna array subsystem 1 and a digital intermediate frequency signal processing subsystem 2, wherein:

[0129] The antenna array subsystem 1 includes an upward-looking antenna array module 11 and a downward-looking antenna array module 12, wherein:

[0130] The upward looking antenna array module 11 includes an upward looking antenna array 111, a POD antenna 112, a first radio frequency receiving unit 113, a first feeding network 114, a first DBF acquisition 115, a first front remote control telemetry module 116, a clock And signal reference unit 117, synchronous clock module 118, circulator 119, low noise amplifier module 1110 and first front secondary power supply 1111, wherein:

[0131] The upward looking antenna array 111 is connected to the first radio frequency receiving unit 113 for receiving GNSS direct radio frequency...

Embodiment 2

[0164] On the basis of Embodiment 1, this embodiment describes in detail the structural block diagram of the correlator module 22, as figure 2 As shown, the correlator module 22 adopts the hardware architecture of 4AD+2FPGA+1DSP, adopts the distributed correlation calculation principle, and calculates the interferometric GNSS-R cross-correlation of navigation satellite signals by controlling the calculation unit FPGA2 through the correlator main control unit FPGA1 The power spectrum, and the communication interface of the expansion computing unit is reserved, which can effectively expand the number of beams and the number of cross-correlation channels of the payload.

[0165] In this embodiment, the correlator module 22 completes the calculation of the beam angle of the navigation satellite signal, the calculation of the theoretical specular reflection point, the selection of the reflection channel PRN, the calculation of the control amount of the reflection signal, the collec...

Embodiment 3

[0171] The present invention additionally discloses a method for realizing an external source-assisted atmosphere-ocean remote sensing device. Using the above-mentioned external source-assisted atmospheric-ocean remote sensing device for installation includes the following steps:

[0172] Step A1: The top-view antenna array 111, the POD antenna 112, the first radio frequency receiving unit 113, the first feeding network 114, the first DBF acquisition 115, the clock and signal reference unit 117, the synchronous clock module 118, the circulator 119, The low-noise amplifier module 1110 and the secondary power supply 1111 of the first front are installed on the aluminum honeycomb board of the upper front;

[0173] Step A2: Install the downward-looking antenna array 121, the downward-looking calibration antenna 122, the second radio frequency receiving unit 123, the second feeding network 124, the second DBF acquisition 125, and the second array secondary power supply 127 on the do...

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Abstract

The invention discloses an exogenous power-assisted atmospheric ocean remote sensing device and an implementation method and a working method thereof. The remote sensing device comprises an antenna array surface subsystem and a digital intermediate frequency signal processing subsystem, wherein the antenna array surface subsystem consists of an upward-looking antenna array, a downward-looking antenna array, a POD antenna, a downward-looking calibration antenna, a radio frequency receiving unit, a DBF acquisition unit, a clock and signal reference unit and the like; and the digital intermediatefrequency signal processing subsystem consists of a DBF synthesizer, a correlator, a telecontrol and telemetering unit, a solid memory and a secondary power supply. The working method comprises the steps: the correlator module is a main control module of a load, receives GNSS direct and reflected signals, completes beam angle, specular reflection point and reflected signal control quantity calculation and the like, and outputs a cross-correlation power spectrum. The remote sensing device can cover a plurality of specular reflection areas at the same time; and compared with a single-strip detection mode of a traditional radar altimeter, the multiple-strip detection mode comprised in the method provides feasibility for two-dimensional sea surface parameter inversion, and the inversion precision of a strip coverage blank area is effectively improved.

Description

technical field [0001] The invention relates to the field of detection devices, in particular to an external source-assisted atmosphere-ocean remote sensing device, a realization method and a working method. Background technique [0002] The GNSS-R comprehensive detection device adopts GNSS-R (Global Navigation Satellite System-Reflection) bistatic radar scattering marine remote sensing technology, which is a new, effective and low-cost microwave remote sensing technology, through the lightweight design of the phased array antenna , DBF digital beamforming technology, realize load integration, light weight, low cost, high precision, wide swath, and have all-weather and all-weather marine dynamic environment monitoring capabilities, which can be applied to the average height of mesoscale sea surface, sea surface wind The detection of atmospheric and marine environmental elements such as field, significant wave height, and sea ice. [0003] The detection principle of GNSS-R t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/95G01S7/02G01S19/37
CPCG01S13/95G01S7/02G01S19/37Y02A90/10
Inventor 秦瑾周勃秦轶炜李培盛志超姚崇斌顾斯祺
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM