CN101865909A - Microwave remote sensing soil moisture monitoring system and method thereof - Google Patents
Microwave remote sensing soil moisture monitoring system and method thereof Download PDFInfo
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Abstract
The invention discloses a microwave remote sensing soil moisture monitoring system and a method thereof. The system comprises a soil moisture and ocean salinity (SMOS) satellite, a ground satellite receiving station, a data processing system, a global navigation satellite system (GNSS) signal source, a global navigation satellite system-reflection (GNSS-R) receiver, a mobile platform and a platform control system, wherein the SMOS satellite passively receives an L-band microwave signal transmitted by the earth surface, processes the signal through the data processing system and transmits the processed signal to a data analysis processing system; the GNSS-R receiver receives a GNSS direct signal and a forward scattered signal which is reflected by the ground and contains ground object information, and transmits the two signals to the data analysis processing system; and the data analysis processing system performs precision evaluation and inversion algorithm verification on soil moisture information. The ground real-time synchronous data acquired by the GNSS-R receiver is applied to precision evaluation and inversion algorithm verification of an SMOS soil moisture model of a passive microwave sensor so as to realize multi-scale and active and passive combined microwave remote sensing soil moisture monitoring.
Description
Technical field
The present invention relates to a kind of soil moisture monitoring system, particularly a kind of microwave remote sensing soil moisture monitoring system and method thereof.
Background technology
An important parameter index in hydrology, meteorology and the research of agricultural science field is exactly a soil moisture, and soil moisture has also played important effect in current agricultural development.Monitoring soil moisture and inverting are the important component parts of agricultural research and Ecology Environment Evaluation on a large scale.The holard environment inverting of zone or global range is one of requisite parameter in the face procedure schema research of land.Thereby soil moisture remote sensing monitoring and inverting are the important topics of current scientific research.
Microwave remote sensing can be divided into two kinds of active microwave remote sensing and passive microwave remote sensings.Passive microwave remote sensing monitoring soil moisture mainly depends on microwave radiometer the microwave emission or the brightness temperature of soil itself is measured.Studies show that: the efficiently sampling degree of depth of microwave radiometry soil moisture is about 2 to 5 centimetres, and selects longer wavelength more favourable, and wavelength is L-band the best of 21cm.The fundamental purpose of the soil moisture of European Space Agency and ocean salinity plan SMOS (Soil Moisture and Ocean Salinity) is monitoring soil moisture and ocean salinity.The service load of SMOS satellite is based on the TRMMMi-crowave Imager MIRAS (Microwave Imaging Radiometer by Aperture Synthesis) of aperture synthesis technology, L-wave band, two dimension, dual-polarized passive microwave interferometric radiometer, this sensor can provide the observation of 0 to 55 ° of multi-angle global range, thereby provides effective means for the Soil Moisture Inversion of global range.The pixel resolution of SMOS is at 30～50km, and in conjunction with assimilation model, these spaceborne data will unprecedentedly improve the spatial resolution of soil moisture, and SMOS is 0.4m to the monitoring accuracy of soil moisture
3/ m
3, after carrying out the Soil Moisture Inversion algorithm of large scale, need the real-time synchrodata of small scale to carry out the evaluation of model accuracy and the checking of inversion algorithm.
And the main means of the in real time synchronous verification method of existing small scale are the microwaves corresponding sensor to be installed on the aerial remote sensing platforms such as ground or unmanned plane, because sensor involves great expense, cause the waste of manpower and financial resources.
Therefore, at the monitoring soil moisture technology of SMOS satellite, also need a kind of convenient, efficient, ground synchronous checking means that cost is low.
Summary of the invention
For solving the problem that exists on the prior art, the present invention will propose the microwave remote sensing soil moisture monitoring system and the method thereof of a kind of low cost, multiple dimensioned, main passive combination.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of microwave remote sensing soil moisture monitoring system, comprise the SMOS satellite, ground satellite receiving station and data handling system, described SMOS passing of satelline L-band microwave signal is connected with ground satellite receiving station, described data handling system is connected with ground satellite receiving station by signal cable, described system also comprises the GNSS signal source, the GNSS-R receiver, mobile platform and platform control system, described GNSS signal source is connected with the GNSS-R receiver by the L-band microwave signal, described GNSS-R receiver is installed on the mobile platform, be connected with the data analysis disposal system by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system is the computing machine that microwave remote sensing soil moisture analytic system software is installed, described platform control system is the industrial computer that the mobile platform motion control program is installed, be connected with mobile platform by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system is connected with data handling system by data line.
Mobile platform of the present invention is ground remote sensing platform, aerial remote sensing platform or low orbit satellite.
A kind of microwave remote sensing soil moisture monitoring method may further comprise the steps:
The L-band microwave signal of A, the passive reception of SMOS satellite face of land emission is also passed to ground satellite receiving station with signal data, and by data handling system handle and synchronous transmission to the data analysis disposal system;
B, GNSS signal source provide the L-band microwave signal, and the GNSS-R receiver receives GNSS direct signal and the forward scattering signal that comprises terrestrial object information after ground return, and is transferred to the data analysis disposal system;
The soil moisture information of the large scale that C, data analysis disposal system will obtain from the soil moisture information of the small scale target area that the GNSS-R receiver obtains with from data handling system is carried out real-time synchronous processing, soil moisture information is carried out the checking of precision evaluation and inversion algorithm.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention has used reflected signal GNSS-R (the Global Navigation Satellite System-Reflection) technology of global navigational satellite, on the small scale of this technology for the 50m radius, can obtain the thick soil moisture information of the face of land 0～5cm, the data that basic and SMOS technology are obtained are identical, and are operated in the L-band of suit monitoring soil moisture and inverting; The mode of operation of GNSS-R belongs to the bistatic model of bistatic, and signal source provides free stable source by GNSS Navsat group, so GNSS-R receiver volume is little, in light weight.Therefore it is a kind of with low cost, easy-to-use effective means that the data of utilizing the GNSS-R microwave remote sensing technique that the SMOS technology is obtained are carried out the ground verification, and the real-time synchrodata in ground that can easily GNSS-R be obtained is applied in the checking of the precision evaluation of passive microwave sensor SMOS soil moisture model and inversion algorithm.
2, because spaceborne SMOS technology can be obtained the soil moisture information on the large scale, and the GNSS-R technology can be obtained than the information on the small scale, the two mutually combines, after carrying out the Soil Moisture Inversion algorithm of large scale, need the real-time synchrodata of small scale to carry out the evaluation of model accuracy and the checking of inversion algorithm, utilize the GNSS-R data SMOS data to be carried out the checking of Soil Moisture Inversion algorithm, and correction inversion algorithm, thereby can improve inverting and calculate precision, and then improve and improve the forecast precision of the hydrology and meteorologic model greatly, and provide accurate data for agricultural production and disaster monitoring.
3, the data of utilizing the SMOS technology to obtain owing to the present invention combine with the observation data of GNSS-R technology, can obtain credible, multiple dimensioned soil moisture data simultaneously, pass through Data Management Analysis, realized the microwave remote sensing soil moisture monitoring of main passive combination, land face, atmospherical model have positive and important effect more accurately for setting up.
Description of drawings
2 in the total accompanying drawing of the present invention, wherein:
Fig. 1 is a GNSS-R remote sensing schematic diagram.
Fig. 2 is that microwave remote sensing soil moisture 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 analysis disposal system, 6, soil, 7, the SMOS satellite, 8, ground satellite receiving station, 9, data handling system.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.Shown in Fig. 1-2, a kind of microwave remote sensing soil moisture monitoring system, comprise SMOS satellite 7, ground satellite receiving station 8 and data handling system 9, described SMOS satellite 7 is connected with ground satellite receiving station 8 by the L-band microwave signal, described data handling system 9 is connected with ground satellite receiving station 8 by signal cable, described system also comprises GNSS signal source 1, GNSS-R receiver 2, mobile platform 3 and platform control system 4, described GNSS signal source 1 is connected with GNSS-R receiver 2 by the L-band microwave signal, described GNSS-R receiver 2 is installed on the mobile platform 3, be connected with data analysis disposal system 5 by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system 5 is computing machines that microwave remote sensing soil 6 water analysis system softwares are installed, described platform control system 4 is industrial computers that mobile platform 3 motion control program are installed, be connected with mobile platform 3 by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system 5 is connected with data handling system 9 by data line.Described mobile platform 3 is ground remote sensing platform, aerial remote sensing platform or low orbit satellite.
A kind of microwave remote sensing soil moisture monitoring method may further comprise the steps:
The L-band microwave signal of A, SMOS satellite 7 passive reception faces of land emission is also passed to ground satellite receiving station 8 with signal data, and by data handling system 9 handle and synchronous transmission to data analysis disposal system 5;
B, GNSS signal source 1 provide the L-band microwave signal, and GNSS-R receiver 2 receives GNSS direct signal and the forward scattering signal that comprises terrestrial object information after ground return, and is transferred to data analysis disposal system 5;
Soil 6 moisture information of the large scale that C, data analysis disposal system 5 will obtain from soil 6 moisture information of the small scale target area that GNSS-R receiver 2 obtains with from data handling system 9 are carried out real-time synchronous processing, and soil 6 moisture information are carried out the checking of precision evaluation and inversion algorithm.
Claims (3)
1. microwave remote sensing soil moisture monitoring system, comprise SMOS satellite (7), ground satellite receiving station (8) and data handling system (9), described SMOS satellite (7) is connected with ground satellite receiving station (8) by the L-band microwave signal, described data handling system (9) is connected with ground satellite receiving station (8) by signal cable, it is characterized in that: described system also comprises GNSS signal source (1), GNSS-R receiver (2), mobile platform (3) and platform control system (4), described GNSS signal source (1) is connected with GNSS-R receiver (2) by the L-band microwave signal, described GNSS-R receiver (2) is installed on the mobile platform (3), be connected with data analysis disposal system (5) by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system (5) is the computing machine that microwave remote sensing soil (6) water analysis system software is installed, described platform control system (4) is the industrial computer that mobile platform (3) motion control program is installed, be connected with mobile platform (3) by the intrinsic transmission wave band of land face that not disturbed by other signals, described data analysis disposal system (5) is connected with data handling system (9) by data line.
2. a kind of microwave remote sensing soil moisture monitoring system according to claim 1 is characterized in that: described mobile platform (3) is ground remote sensing platform, aerial remote sensing platform or low orbit satellite.
3. microwave remote sensing soil moisture monitoring method is characterized in that: may further comprise the steps:
The L-band microwave signal of A, the passive reception of SMOS satellite (7) face of land emission is also passed to ground satellite receiving station (8) with signal data, and handles and synchronous transmission arrives data analysis disposal system (5) by data handling system (9);
B, GNSS signal source (1) provide the L-band microwave signal, and GNSS-R receiver (2) receives GNSS direct signal and the forward scattering signal that comprises terrestrial object information after ground return, and is transferred to data analysis disposal system (5);
Soil (6) moisture information of soil (6) moisture information of the small scale target area that C, data analysis disposal system (5) will obtain from GNSS-R receiver (2) and the large scale obtained from data handling system (9) is carried out real-time synchronous processing, and soil (6) moisture information is carried out the checking of precision evaluation and inversion algorithm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102034027A (en) * | 2010-12-16 | 2011-04-27 | 南京大学 | Method for assimilating remote sensing data of soil humidity in watershed scale |
| CN103336104A (en) * | 2013-06-08 | 2013-10-02 | 北京航空航天大学 | Precise inversion method for soil dielectric constant through global navigation satellite system (GNSS) satellite reflection signal |
| CN103645295A (en) * | 2013-12-03 | 2014-03-19 | 中国科学院遥感与数字地球研究所 | Multilayer soil moisture simulation method and multilayer soil moisture simulation system |
| CN103969268A (en) * | 2014-04-04 | 2014-08-06 | 中国科学院华南植物园 | Method for inverting surface soil physical parameters through passive microwave remote sensing |
| CN104267045A (en) * | 2014-09-04 | 2015-01-07 | 浙江托普仪器有限公司 | Wide-area soil moisture content detection system based on wireless network |
| CN104539384A (en) * | 2014-11-19 | 2015-04-22 | 华中科技大学 | Radio frequency interference detection method based on satellite passive microwave remote sensing data |
| CN104678404A (en) * | 2015-02-11 | 2015-06-03 | 北京航空航天大学 | Embedded real-time measurement device for soil humidity based on Beidou synchronous navigation satellite |
| CN106405558A (en) * | 2016-11-09 | 2017-02-15 | 武汉华梦科技有限公司 | Ground-based meteorological microwave radiometer system based on dual-frequency antenna and measurement method |
| WO2017050548A1 (en) * | 2015-09-25 | 2017-03-30 | Bayer Cropscience Ag | Method for determining soil-type-specific parameters by sensing the soil moisture of soil layers close to the surface |
| CN106873048A (en) * | 2017-01-16 | 2017-06-20 | 佛山市三水区希望火炬教育科技有限公司 | A kind of special battlefield Water Sources device of teenager's defence education training |
| CN107526069A (en) * | 2017-07-27 | 2017-12-29 | 天津大学 | It is a kind of to utilize the inverting of forward scattering intensity and the method for classification seabed surface deposits |
| CN108535338A (en) * | 2018-01-25 | 2018-09-14 | 中国科学院东北地理与农业生态研究所 | Thick spatial resolution satellite remote sensing soil moisture validity check method |
| CN108761034A (en) * | 2018-05-16 | 2018-11-06 | 河海大学 | A kind of multi-source satellite soil moisture retrieval method |
| CN109459056A (en) * | 2018-11-06 | 2019-03-12 | 上海航天测控通信研究所 | A kind of passive combined detection device of ground target master and aircraft |
| CN112132322A (en) * | 2020-08-25 | 2020-12-25 | 航天信德智图（北京）科技有限公司 | Camellia remote sensing yield estimation method based on water stress condition yield estimation model |
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| CN113194296A (en) * | 2021-04-30 | 2021-07-30 | 珠海复旦创新研究院 | Unmanned aerial vehicle comprehensive remote sensing platform and method for agricultural meteorological monitoring |
| US11692950B2 (en) * | 2019-03-11 | 2023-07-04 | Skaha Remote Sensing Ltd. | System and method to detect ground moisture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040083833A1 (en) * | 2002-10-28 | 2004-05-06 | Hitt Dale K. | Wireless sensor probe |
| CN2630854Y (en) * | 2003-06-20 | 2004-08-04 | 北京林业大学 | Intelligent soil parameter space distribution rapid-measuring instrument |
| CN201754150U (en) * | 2010-06-07 | 2011-03-02 | 大连海事大学 | Microwave remote sensing soil moisture monitoring system |
-
2010
- 2010-06-07 CN CN 201010194249 patent/CN101865909A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040083833A1 (en) * | 2002-10-28 | 2004-05-06 | Hitt Dale K. | Wireless sensor probe |
| CN2630854Y (en) * | 2003-06-20 | 2004-08-04 | 北京林业大学 | Intelligent soil parameter space distribution rapid-measuring instrument |
| CN201754150U (en) * | 2010-06-07 | 2011-03-02 | 大连海事大学 | Microwave remote sensing soil moisture monitoring system |
Non-Patent Citations (2)
| Title |
|---|
| 《遥感信息》 20091231 吴学睿等 L波段多角度裸露地表土壤水分反演研究 , 第8期 * |
| 《高技术通讯》 20091231 毛克彪等 基于AIEM和实地观测数据对GNSS－R反演土壤水分的研究 第19卷, 第3期 * |
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| CN102034027A (en) * | 2010-12-16 | 2011-04-27 | 南京大学 | Method for assimilating remote sensing data of soil humidity in watershed scale |
| CN103336104A (en) * | 2013-06-08 | 2013-10-02 | 北京航空航天大学 | Precise inversion method for soil dielectric constant through global navigation satellite system (GNSS) satellite reflection signal |
| CN103336104B (en) * | 2013-06-08 | 2015-12-09 | 北京航空航天大学 | GNSS satellite reflected signal is used for the exact inversion method of soil dielectric constant |
| CN103645295A (en) * | 2013-12-03 | 2014-03-19 | 中国科学院遥感与数字地球研究所 | Multilayer soil moisture simulation method and multilayer soil moisture simulation system |
| CN103645295B (en) * | 2013-12-03 | 2017-02-08 | 中国科学院遥感与数字地球研究所 | Multilayer soil moisture simulation method and multilayer soil moisture simulation system |
| CN103969268A (en) * | 2014-04-04 | 2014-08-06 | 中国科学院华南植物园 | Method for inverting surface soil physical parameters through passive microwave remote sensing |
| CN103969268B (en) * | 2014-04-04 | 2016-06-29 | 中国科学院华南植物园 | The passive microwave remote sensing inversion method of surface soil physical parameter |
| CN104267045A (en) * | 2014-09-04 | 2015-01-07 | 浙江托普仪器有限公司 | Wide-area soil moisture content detection system based on wireless network |
| CN104267045B (en) * | 2014-09-04 | 2017-01-18 | 浙江托普仪器有限公司 | Wide-area soil moisture content detection system based on wireless network |
| CN104539384A (en) * | 2014-11-19 | 2015-04-22 | 华中科技大学 | Radio frequency interference detection method based on satellite passive microwave remote sensing data |
| CN104678404A (en) * | 2015-02-11 | 2015-06-03 | 北京航空航天大学 | Embedded real-time measurement device for soil humidity based on Beidou synchronous navigation satellite |
| WO2017050548A1 (en) * | 2015-09-25 | 2017-03-30 | Bayer Cropscience Ag | Method for determining soil-type-specific parameters by sensing the soil moisture of soil layers close to the surface |
| CN106405558A (en) * | 2016-11-09 | 2017-02-15 | 武汉华梦科技有限公司 | Ground-based meteorological microwave radiometer system based on dual-frequency antenna and measurement method |
| CN106873048A (en) * | 2017-01-16 | 2017-06-20 | 佛山市三水区希望火炬教育科技有限公司 | A kind of special battlefield Water Sources device of teenager's defence education training |
| CN107526069A (en) * | 2017-07-27 | 2017-12-29 | 天津大学 | It is a kind of to utilize the inverting of forward scattering intensity and the method for classification seabed surface deposits |
| CN108535338A (en) * | 2018-01-25 | 2018-09-14 | 中国科学院东北地理与农业生态研究所 | Thick spatial resolution satellite remote sensing soil moisture validity check method |
| CN108535338B (en) * | 2018-01-25 | 2020-12-22 | 中国科学院东北地理与农业生态研究所 | Coarse spatial resolution satellite remote sensing soil moisture authenticity inspection method |
| CN108761034A (en) * | 2018-05-16 | 2018-11-06 | 河海大学 | A kind of multi-source satellite soil moisture retrieval method |
| CN108761034B (en) * | 2018-05-16 | 2019-04-30 | 河海大学 | A kind of multi-source satellite soil moisture retrieval method |
| CN109459056A (en) * | 2018-11-06 | 2019-03-12 | 上海航天测控通信研究所 | A kind of passive combined detection device of ground target master and aircraft |
| US10996179B2 (en) | 2019-03-11 | 2021-05-04 | Skaha Remote Sensing Ltd. | System and method to detect ground moisture |
| US11692950B2 (en) * | 2019-03-11 | 2023-07-04 | Skaha Remote Sensing Ltd. | System and method to detect ground moisture |
| CN112132322A (en) * | 2020-08-25 | 2020-12-25 | 航天信德智图（北京）科技有限公司 | Camellia remote sensing yield estimation method based on water stress condition yield estimation model |
| CN113194296A (en) * | 2021-04-30 | 2021-07-30 | 珠海复旦创新研究院 | Unmanned aerial vehicle comprehensive remote sensing platform and method for agricultural meteorological monitoring |
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