CN201754185U - Sea ice microwave remote sensing monitoring system - Google Patents
Sea ice microwave remote sensing monitoring system Download PDFInfo
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- CN201754185U CN201754185U CN2010202187310U CN201020218731U CN201754185U CN 201754185 U CN201754185 U CN 201754185U CN 2010202187310 U CN2010202187310 U CN 2010202187310U CN 201020218731 U CN201020218731 U CN 201020218731U CN 201754185 U CN201754185 U CN 201754185U
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Abstract
The utility model discloses a sea ice remote sensing monitoring system, which comprises a GNSS signal source, an RADARSAT signal source, a GNSS-R receiver, a moving platform, a platform control system and a data receiving processing system. The GNSS signal source provides L-waveband signals, the RADARSAT signal source provides backward scattering signals, the GNSS-R receiver receives directly incident signals of the GNSS signal source and forward scattering signals scattering after incoming onto a sea ice surface, the data receiving processing system receives the forward scattering signals and the backward scattering signals and processes and analyzes the received signals, and the platform control system controls motion of the moving platform. The sea ice microwave remote sensing monitoring system realizes innovation of traditional monitoring means, can work for 24 hours in all weathers, is higher in penetrability due to the fact that the GNSS-R works in L-waveband with longer wavelength, and can realize sea ice monitoring with low cost and high efficiency.
Description
Technical field
The utility model relates to a kind of sea ice monitoring technology, particularly a kind of sea ice microwave remote sensing monitoring system.
Background technology
The sea ice disaster is one of important disaster of nature, influence Human's production lives such as maritime traffic transportation, marine resources development, and the especially big sea ice disaster in Bohai Sea Gulf of in January, 2010 outburst makes the sea ice disaster become the focus of concern once more, has also further deepened the sense of duty and the sense of calling of remote sensing field researcher to sea ice monitoring and research.
Remote sensing technology is the important means of sea ice monitoring, and all there is certain limitation in present remote sensing monitoring means.Be subject to weather conditions as optics and infrared remote sensing, can not all weather operations; Microwave remote sensing has overcome this shortcoming, active microwave remote sensing---synthetic-aperture radar SAR spatial resolution height, but temporal resolution can't satisfy the demand of real-time monitoring, and cost is higher, and passive microwave remote sensing can be subjected to the restriction than low spatial resolution again.
Between many atural objects, the microwave emissivity difference is bigger, for visible light and infrared remote sensing the characteristic of indistinguishable some object, microwave remote sensing can more easily be told.For example, in microwave region, the emissivity of water is 0.4, and the emissivity of ice is 0.99, both brightness temperatures differ 100k at normal temperatures, be easy to difference, and at infrared band, the emissivity of water are 0.96, the emissivity of ice is 0.92, and both are of slight difference, is difficult for difference.
GNSS-R (GlobalNavigation Satellite System-Reflection) technology based on GNSS (Global Navigation Satellite System) reflected signal has become a kind of emerging microwave remote sensing technique.The receiver of emerging microwave remote sensing technique GNSS-R can receive the multi-satellite signal in the visual field simultaneously, and this bistatic radar measurement pattern can improve spatial and temporal resolution greatly.Simultaneously, owing to be operated in L-band, so can monitor all-time anf all-weather.GNSS-R belongs to passive reception, itself do not need to transmit, so all very little on the volume and weight, needed power consumption is also little.Because the GNSS reflected signal is influenced by the specific inductive capacity of sea ice, and the composition of the specific inductive capacity of sea ice and ice, density, ice age, salinity, temperature are relevant with form, so the reflection coefficient on the specific inductive capacity of specific inductive capacity by ice and subglacial seawater and sea ice surface can be determined sea ice parameter such as internal feature, thickness, type etc.
November nineteen ninety-five, the Canadian radar satellite (RADARSAT) of emission then was a radar system of taking into account commercialization and scientific experimentation purposes, and its main detection of a target is a sea ice, also considers the land imaging simultaneously, so that be applied to fields such as agricultural, geology.There are 5 kinds of wave beam mode of operations in this system, that is: (1) standard beam modes, and 20～49 ° of incident angles, 100 kilometers of imaging width, distance and azimuthal resolution are 25 meters * 28 meters; (2) wide radiation beam, 20～40 ° of incident angles, imaging width and spatial resolution are respectively 150 kilometers and 28 meters * 35 meters; (3) high resolving power wave beam, three kinds of parameters are followed successively by 37～48 °, 45 kilometers and 10 meters * 10 meters; (4) scanning radar wave beam, this pattern have global fast imaging ability, and the imaging width is 300 kilometers or 500 kilometers, comparatively 50 meters * 50 meters or 100 meters * 100 meters of resolution, and incident angle is 20～49 °; (5) test wave beam, the maximum characteristics of this pattern are that incident angle is big, be 49～59 °, and amplitude of variation are little, imaging width and resolution are respectively 75 kilometers and 28 meters * 30 meters.
Subsequent satellites as state-of-the-art commercial satellite RADARSAT-2 in the world is RADARSAT-1 except that shooting ability that has continued RADARSAT-1 and imaging pattern, has also increased by 3 meters hyperfine patterns of resolution and 8 meters complete polarization patterns.Simultaneously, can look on a left side and switch between looking on the right side according to instruction, this has not only shortened heavily visits the cycle, and has increased the ability of obtaining three-dimensional imaging.
Shorten except heavily visiting at interval, Data Receiving is more guaranteed and Flame Image Process more fast, RADARSAT-2 can provide 11 kinds of beam modes and jumbo solid state record instrument etc.Simultaneously, it submits to the time limit of programming to shorten to 4～12 hours the user, and these operations that all make RADARSAT-2 are more flexibly with convenient.RADARSAT-1 number and No. 2 double star complementations add the Active Imaging characteristics of the round-the-clock round-the-clock of radar, can alleviate the problem of satellite data source deficiency to a certain extent.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model will propose a kind of sea ice microwave remote sensing monitoring system based on GNSS-R and RADARSAT, to realize round-the-clock, round-the-clock real-time monitoring requirements, improves the spatial and temporal resolution of sea ice monitoring.
To achieve these goals, the technical solution of the utility model is as follows: a kind of sea ice microwave remote sensing monitoring system, comprise the GNSS signal source, the RADARSAT signal source, the GNSS-R receiver, mobile platform, platform control system, the Data Receiving disposal system, described GNSS signal source provides L-band signal endlessly, described RADARSAT signal source provides backscatter signal, described GNSS-R receiver is installed on the mobile platform, receive the direct signal of GNSS signal source and incide the forward scattering signal that is scattered on the sea ice face, described Data Receiving disposal system receives the forward scattering signal of GNSS-R receiver transmission and the backscatter signal of RADARSAT signal source emission, and the signal that is received carried out Treatment Analysis, the motion of described platform control system control mobile platform.
Mobile platform described in the utility model is boats and ships, unmanned plane or low orbit satellite.
Compared with prior art, the utlity model has following beneficial effect:
1, adopt novel microwave remote sensing system GNSS-R and RADARSAT to carry out the monitoring of sea ice owing to the utility model proposes, this monitoring means has realized the innovation of traditional monitoring means, can round-the-clock, round-the-clockly carry out work, simultaneously because GNSS-R is operated in the long L-band of wavelength, so penetrability is stronger.And, therefore can realize low cost, high-level efficiency monitoring to sea ice because GNSS-R receiver volume is little, in light weight, cost is low.
2, since the utility model based on RADARSAT following three characteristics are arranged: (1) have 45 kilometers, 75 kilometers, 100 kilometers, 150 kilometers, 300 kilometers with 500 kilometers different radiation width imaging capabilities; (2) the selectivity operation that is respectively 11.6MHz, 17.3MHz, 30.0MHz radar bandwidth makes range resolution adjustable; (3) stronger data-handling capacity.Therefore, the combination of GNSS-R and RADARSAT can realize the fusion of multivariate data, can replenish mutually on spatial and temporal resolution, improves sea ice monitoring efficient.When realizing that sea ice is monitored on a large scale, can obtain ageing very strong sea ice detailed information.
Description of drawings:
2 in the total accompanying drawing of the utility model, wherein:
Fig. 1 is a GNSS-R remote sensing schematic diagram.
Fig. 2 is that sea ice microwave remote sensing monitoring system is formed synoptic diagram.
Among the figure: 1, GNSS signal source, 2, the GNSS-R receiver, 3, mobile platform, 4, platform control system, 5, the Data Receiving disposal system, 6, the RADARSAT signal source, 7, sea ice.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.Shown in Fig. 1-2, a kind of sea ice microwave remote sensing monitoring system, comprise GNSS signal source 1, RADARSAT signal source 6, GNSS-R receiver 2, mobile platform 3, platform control system 4, Data Receiving disposal system 5, described GNSS signal source 1 provides L-band signal endlessly, described RADARSAT signal source 6 provides backscatter signal, described GNSS-R receiver 2 is installed on the mobile platform 3, receive the direct signal of GNSS signal source 1 and incide the forward scattering signal that is scattered on 7 of the sea ice, described Data Receiving disposal system 5 receives the forward scattering signal of GNSS-R receiver 2 transmission and the backscatter signal of RADARSAT signal source 6 emissions, and the signal that is received carried out Treatment Analysis, the motion of described platform control system 4 control mobile platforms 3.Described mobile platform 3 is boats and ships, unmanned plane or low orbit satellite.
The GNSS Navsat will provide accurate, free detectable signal for the mankind in coming few decades, and signal has long-term stability, and therefore, this technology provides very ideal means for monitoring sea ice, analysis sea ice Changing Pattern etc.The utility model is based on emerging remote sensing means GNSS-R, and the sea ice that is conceived to be closely related with people's productive life is studied, and expectation is by novel microwave remote sensing means GNSS-R and in conjunction with convenient, the efficient monitoring of active microwave remote sensing data realization to sea ice.
Claims (2)
1. sea ice microwave remote sensing monitoring system, it is characterized in that: comprise GNSS signal source (1), RADARSAT signal source (6), GNSS-R receiver (2), mobile platform (3), platform control system (4), Data Receiving disposal system (5), described GNSS signal source (1) provides L-band signal endlessly, described RADARSAT signal source (6) provides backscatter signal, described GNSS-R receiver (2) is installed on the mobile platform (3), receive the direct signal of GNSS signal source (1) and incide the forward scattering signal that is scattered on sea ice (7) face, described Data Receiving disposal system (5) receives the forward scattering signal of GNSS-R receiver (2) transmission and the backscatter signal of RADARSAT signal source (6) emission, and the signal that is received carried out Treatment Analysis, the motion of described platform control system (4) control mobile platform (3).
2. a kind of sea ice microwave remote sensing monitoring system according to claim 1 is characterized in that: described mobile platform (3) is boats and ships, unmanned plane or low orbit satellite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202187310U CN201754185U (en) | 2010-06-07 | 2010-06-07 | Sea ice microwave remote sensing monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202187310U CN201754185U (en) | 2010-06-07 | 2010-06-07 | Sea ice microwave remote sensing monitoring system |
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| CN201754185U true CN201754185U (en) | 2011-03-02 |
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| CN2010202187310U Expired - Lifetime CN201754185U (en) | 2010-06-07 | 2010-06-07 | Sea ice microwave remote sensing monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866000A (en) * | 2010-06-07 | 2010-10-20 | 大连海事大学 | Sea ice microwave remote sensing monitoring system |
| CN102866171A (en) * | 2012-09-14 | 2013-01-09 | 江苏科技大学 | Backward electromagnetic scattering coefficient detection module of snow cover-covered sea ice |
| CN104678354A (en) * | 2015-02-11 | 2015-06-03 | 北京航空航天大学 | GNSS-R-based double-star positioning method for sea-surface targets |
-
2010
- 2010-06-07 CN CN2010202187310U patent/CN201754185U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866000A (en) * | 2010-06-07 | 2010-10-20 | 大连海事大学 | Sea ice microwave remote sensing monitoring system |
| CN102866171A (en) * | 2012-09-14 | 2013-01-09 | 江苏科技大学 | Backward electromagnetic scattering coefficient detection module of snow cover-covered sea ice |
| CN102866171B (en) * | 2012-09-14 | 2014-10-22 | 江苏科技大学 | Backward electromagnetic scattering coefficient detection module of snow cover-covered sea ice |
| CN104678354A (en) * | 2015-02-11 | 2015-06-03 | 北京航空航天大学 | GNSS-R-based double-star positioning method for sea-surface targets |
| CN104678354B (en) * | 2015-02-11 | 2017-04-05 | 北京航空航天大学 | A kind of sea-surface target Double-Star Positioning System method based on GNSS R |
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Granted publication date: 20110302 |
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| CX01 | Expiry of patent term |