CN112466093A - Natural disaster monitoring and early warning system and method based on low-earth orbit satellite - Google Patents
Natural disaster monitoring and early warning system and method based on low-earth orbit satellite Download PDFInfo
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- G—PHYSICS
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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Abstract
The invention discloses a natural disaster monitoring and early warning system and method based on a low-orbit satellite, and relates to the technical field of natural disaster monitoring and disaster prevention and reduction.
Description
Technical Field
The invention relates to the technical field of natural disaster monitoring and disaster prevention and reduction, in particular to a natural disaster monitoring and early warning system and method based on a low-earth orbit satellite.
Background
China is vast in breadth, and has complex and various geology and landform, so the method is one of the countries which are most seriously affected by natural disasters in the world, and the natural disasters such as fire, earthquake, flood, typhoon and the like frequently occur, so the method causes great loss to social and economic development and property safety of people, and also causes serious damage to the ecological environment on which people live. At present, a mode of combining professional monitoring and group-testing group prevention is mainly adopted for natural disaster monitoring and early warning, most of villages and towns are generally covered, but the problems of low efficiency, insufficient transmission stability, insufficient data reliability, untimely disaster discovery or early warning and the like still exist under the prior art, and long-time continuous monitoring and early warning cannot be realized.
The existing professional monitoring is widely applied to ground low-power-consumption wide area network technologies (such as LoRa, NB-IoT and the like), and a ground public network is combined with a private network, so that the monitoring coverage range is improved; the group-testing group defense mainly relies on field personnel to collect and report field data through a mobile phone APP. However, such a method is mainly applicable to densely populated areas, and there are still many areas with complex environments (such as mountainous areas, oceans, gobi, etc.) without ground network coverage, and real-time, reliable and effective acquisition and return of monitoring data and timely release of early warning information cannot be realized.
Disclosure of Invention
In view of the above, the present invention provides a natural disaster monitoring and early warning system and method based on a low earth orbit satellite, so as to solve the problem of information transmission of monitoring data transmission and early warning information issue in an environment where a network coverage area is limited or stability is poor in the existing monitoring and early warning system.
The invention is realized by the following technical scheme:
a natural disaster monitoring and early warning system based on low earth orbit satellites comprises: the natural disaster monitoring station is used for acquiring natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage in real time, arranging the natural environment monitoring information, the monitoring equipment state information and the position information into data packets and sending the data packets to the low-orbit satellite constellation; the low-orbit satellite constellation is provided with a plurality of low-orbit satellites, inter-satellite links are arranged among the low-orbit satellites, the data packets are transmitted to the low-orbit satellites, the data packets are transmitted through the inter-satellite links, and then the data packets are sent to a remote control and data processing center through the low-orbit satellites; the remote control and data processing center is provided with a database, historical data are arranged in the database, the remote control and data processing center carries out comparison analysis processing on data of a data packet and the historical data to obtain early warning information of different levels, the early warning information is transmitted to the low-earth-orbit satellite, and the early warning information is transmitted to the low-earth-orbit satellite through the inter-satellite link and is transmitted to a multi-stage early warning system; the multi-stage early warning system comprises a monitoring platform and mobile equipment, wherein the monitoring platform and the mobile equipment are used for receiving early warning information and issuing corresponding control instructions according to the levels of the early warning information, the control instructions are transmitted to the low-orbit satellite through the multi-stage early warning system and then transmitted to the low-orbit satellite through the inter-satellite link, and the low-orbit satellite is transmitted to the natural disaster monitoring station to transfer relevant real-time monitoring information, so that the monitoring platform completes the issuance of the early warning information.
In the scheme, a low-orbit satellite communication technology is utilized, in an area with poor network coverage, a plurality of low-orbit satellites are used as information transmission links through low-orbit satellite constellations formed by inter-satellite links, a natural disaster monitoring station acquires monitoring data, environment monitoring data, video monitoring data, equipment state information and high-precision position information are transmitted to a remote control and data processing center through the low-orbit satellites along the inter-satellite links, early warning information is generated after analysis and processing, the early warning information is sent to a multi-stage early warning system through the low-orbit satellites, transmission and release of the natural disaster monitoring information are achieved, the natural disaster monitoring and early warning are free of communication range limitation, wide-area natural disaster monitoring and early warning are achieved, the timeliness and the reliability of the natural disaster monitoring and early warning are effectively improved, the early warning monitoring technological level is improved, and the early warning capacity.
Furthermore, a disaster grade judging system is arranged in the remote control and data processing center, the disaster grade judging system sets a corresponding threshold according to historical data of the database, the remote control and data processing center decodes, analyzes and processes the data packet, guides the processed data into the preset threshold, and generates early warning information of corresponding grade by comparing the processed data with the threshold and transmits the early warning information to the multistage early warning system through the low-orbit satellite.
According to the scheme, the disaster grade is judged in a grading mode by establishing a disaster grade judging system, the grading accuracy of the disaster grade is improved according to historical data comparison, and the economic loss and casualties caused by disasters can be reduced through grading early warning alarm.
Further, natural disaster monitoring station is including monitoring sensor, data acquisition module, the control unit and low earth orbit satellite communication module, and is a plurality of the information conversion that the monitoring sensor input will gather is a plurality of signals of telecommunication, and is a plurality of the monitoring sensor output is connected the data acquisition module, the data acquisition module is multiple monitoring information with signal of telecommunication conversion, the control unit gathers multiple monitoring information and with its transmission in low earth orbit satellite communication module, low earth orbit satellite communication module and low earth orbit satellite both-way communication are mutual, the multiple monitoring information transmission that low earth orbit satellite communication module will gather in the low earth orbit satellite.
In the scheme, the monitoring sensors are arranged on the site of a natural disaster area and a hidden danger area according to actual conditions, monitoring data such as rainfall, surface deformation, internal displacement and video are uninterruptedly collected in real time for 24 hours, the collection of various sensor data such as air temperature and humidity, rainfall, settlement monitoring data, displacement monitoring data and video data is realized, and the timeliness of early warning is improved by transmitting the data and the real-time data to a low-orbit satellite through a low-orbit satellite communication module.
Preferably, natural disasters monitoring station still includes power management module, power management module is storage solar power module, and it is responsible for power distribution in the natural disasters monitoring station, storage solar power module's setting can provide the power guarantee for natural disasters monitoring station, even also can ensure normal power supply night and rainy day.
Preferably, the remote control and data processing center, the multi-stage early warning system and the natural disaster monitoring station are respectively in bidirectional communication interaction with the low earth orbit satellite, wherein the remote control and data processing center is further used for receiving control instructions of the multi-stage early warning system and sending the control instructions to the natural disaster monitoring station for acquiring designated monitoring information.
Based on the system, the invention also provides a natural disaster monitoring and early warning method based on the low-earth orbit satellite, which comprises the following steps:
s1: the natural disaster monitoring station acquires real-time acquired natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage, arranges the information into data packets and sends the data packets to the low-orbit satellite;
s2: the low earth orbit satellite transmits a data packet through an inter-satellite link and sends the data packet to the remote control and data processing center;
s3: the remote control and data processing center generates early warning information after analysis and processing, and sends the early warning information to the low-orbit satellite;
s31: establishing a disaster grade judgment system and a database in the remote control and data processing center;
s32: storing natural disaster historical data in the database, and setting corresponding thresholds in a disaster grade judgment system, wherein the thresholds correspond to natural disaster historical data of different grades;
s33: the remote control and data processing center decodes, analyzes and processes the imported data packet, imports the processed data into the preset threshold, judges whether the processed data is abnormal or not by comparing the processed data with the threshold, and generates early warning information of corresponding level;
s34: if the abnormal condition exists, transmitting the early warning information of the corresponding grade to a multi-grade early warning system through the low orbit satellite, otherwise, returning to the step S31;
s4: the low earth orbit satellite transmits early warning information through an inter-satellite link and sends the early warning information to a multi-stage early warning system;
s5: the multi-stage early warning system completes the release of early warning information through a monitoring platform and mobile equipment;
s6: and the multistage early warning system issues a control instruction according to the early warning information condition, and sends the control instruction to a natural disaster monitoring station through the low-orbit satellite to transfer relevant real-time monitoring information.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a natural disaster monitoring and early warning system and method based on a low-orbit satellite, which are characterized in that settlement displacement monitoring data, environment monitoring data, video monitoring data, equipment state information and high-precision position information acquired by a natural disaster monitoring station are transmitted to a remote control and data processing center through the low-orbit satellite, early warning information is generated after analysis and processing, and is transmitted to a multistage early warning system through the low-orbit satellite, so that natural disaster monitoring information transmission and early warning information release are realized, the natural disaster monitoring and early warning are not limited by a communication range, wide-area natural disaster monitoring and early warning are realized, the timeliness and reliability of natural disaster monitoring and early warning are effectively improved, the early warning monitoring technological level is improved, and the early warning capability is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of the overall structural design of a natural disaster monitoring and early warning system of a low earth orbit satellite in an embodiment of the invention;
fig. 2 is a flowchart of a natural disaster monitoring and early warning method for a low earth orbit satellite according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Examples
As shown in fig. 1, the natural disaster monitoring and early warning system based on the low earth orbit satellite of the present invention includes: the natural disaster monitoring station is used for acquiring natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage in real time, arranging the natural environment monitoring information, the monitoring equipment state information and the position information into data packets and sending the data packets to the low-orbit satellite constellation; the low-orbit satellite constellation is provided with a plurality of low-orbit satellites, inter-satellite links are arranged among the low-orbit satellites, data packets are transmitted to the low-orbit satellites, the data packets are transmitted through the inter-satellite links, and then the data packets are sent to the remote control and data processing center through the low-orbit satellites; the remote control and data processing center is provided with a database, historical data are arranged in the database, the remote control and data processing center carries out comparison analysis processing on data of the data packet and the historical data to obtain early warning information of different levels, the early warning information is transmitted to the low-orbit satellite, and the early warning information is transmitted to the low-orbit satellite through an inter-satellite link and is transmitted to the multi-level early warning system; the multi-stage early warning system comprises a monitoring platform and a mobile device, wherein the monitoring platform and the mobile device are used for receiving early warning information, and issuing corresponding control instructions according to the levels of the early warning information, the control instructions are transmitted to a low-orbit satellite through the multi-stage early warning system and then transmitted to the low-orbit satellite through an inter-satellite link, relevant real-time monitoring information is transferred from a natural disaster monitoring station through the low-orbit satellite, the early warning information is issued through the monitoring platform, the low-orbit satellite is used for sending the early warning information to the multi-stage early warning system, the transmission and the issuance of the natural disaster monitoring information are realized, the natural disaster monitoring and early warning are free of communication range limitation, the wide-area natural disaster monitoring and early warning are realized, the timeliness and the reliability of the natural disaster monitoring and early warning are.
Preferably, as for the above embodiment, a disaster level judgment system is arranged in the remote control and data processing center, the disaster level judgment system sets a corresponding threshold according to historical data of the database, the remote control and data processing center decodes and analyzes the data packet, and guides the processed data into a preset threshold, and by comparing the processed data with the threshold, generates early warning information of a corresponding level and transmits the early warning information to the multi-level early warning system through a low-earth satellite, and by means of multi-level early warning, the economic loss and casualties in case of disaster are reduced.
As the preferred of above-mentioned embodiment, natural disasters monitoring station includes the monitoring sensor, the data acquisition module, the control unit and low earth orbit satellite communication module, a plurality of monitoring sensor input convert the information of gathering into a plurality of signals of telecommunication, a plurality of monitoring sensor output connect data acquisition module, the data acquisition module converts the signal of telecommunication into multiple monitoring information, the control unit gathers multiple monitoring information and transmits it in low earth orbit satellite communication module, low earth orbit satellite communication module and low earth orbit satellite both-way communication are mutual, low earth orbit satellite communication module will gather multiple monitoring information transmission in the low earth orbit satellite.
The control unit presetting interface comprises a general input/output port GPIO; the preset interface of the data acquisition module comprises an RJ-45 bus, an RS485 bus, an asynchronous transmission standard interface RS232 and a vibrating wire sensor interface. The monitoring sensor comprises a GNSS receiver, an antenna, a displacement monitoring sensor, an air temperature and humidity sensor, a video sensor and a rain gauge, and the monitoring information comprises displacement monitoring information, an air temperature value, a humidity value, rainfall and video data. According to geological conditions and meteorological conditions, a natural disaster easily-occurring area and a hidden danger area are selected, monitoring sensors are installed and arranged on the natural disaster easily-occurring area and the hidden danger area, monitoring data such as rainfall, surface deformation, internal displacement and video are uninterruptedly collected in real time for 24 hours, and a data collection module collects data of various sensors such as air temperature and humidity, rainfall, settlement monitoring data, displacement monitoring data and video data through interfaces such as RJ45, RS485 buses and RS232 (asynchronous transmission standard interfaces).
As a preferred example of the above embodiment, as shown in fig. 1, the natural disaster monitoring station further includes a power management module, the power management module is a power storage solar power supply module, and is responsible for power supply distribution in the natural disaster monitoring station, the power storage solar power supply module can provide power supply guarantee for the natural disaster monitoring station, and the circuits generated by the solar cell panel are integrated into the voltage required by the device by using the existing methods such as PWM control circuit and voltage sampling of the single chip, so that normal power supply can be guaranteed even at night and in rainy days.
As a preferred embodiment of the foregoing embodiment, as shown in fig. 1, the remote control and data processing center, the multi-stage early warning system, and the natural disaster monitoring station are respectively in bidirectional communication with the low earth orbit satellite, wherein the remote control and data processing center is further configured to receive a control instruction of the multi-stage early warning system, and send the control instruction to the natural disaster monitoring station for obtaining specified monitoring information.
In addition, the invention provides a natural disaster monitoring and early warning method based on a low earth orbit satellite, which comprises the following steps:
s1: the method comprises the steps that a natural disaster monitoring station acquires natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage in real time, arranges the natural environment monitoring information, the monitoring equipment state information and the position information into data packets and sends the data packets to a low-orbit satellite;
s2: the low earth orbit satellite transmits a data packet through an inter-satellite link and sends the data packet to a remote control and data processing center;
s3: the remote control and data processing center generates early warning information after analysis and processing, and sends the early warning information to the low-orbit satellite;
s31: establishing a disaster grade judgment system and a database in a remote control and data processing center;
s32: storing natural disaster historical data in a database, setting corresponding thresholds in a disaster grade judgment system, wherein the thresholds correspond to natural disaster historical data of different grades;
s33: the remote control and data processing center decodes, analyzes and processes the imported data packet, imports the processed data into the preset threshold, judges whether the processed data is abnormal or not by comparing the processed data with the threshold, and generates early warning information of corresponding level;
s34: if the abnormal condition exists, transmitting the early warning information of the corresponding grade to a multi-grade early warning system through the low orbit satellite, otherwise, returning to the step S31;
s4: the low earth orbit satellite transmits early warning information through an inter-satellite link and sends the early warning information to a multi-stage early warning system;
s5: the early warning information is issued in the multi-stage early warning system through the monitoring platform and the mobile equipment;
the multi-stage early warning system comprises a multi-stage monitoring center and an APP of related personnel, and is used for receiving early warning information issued by the remote control and data processing center and issuing corresponding control instructions to the remote control and data center.
S6: and the multi-stage early warning system issues a control instruction according to the early warning information condition, and sends the control instruction to a natural disaster monitoring station through a low-earth orbit satellite to transfer related real-time monitoring information.
According to the invention, by utilizing a low-orbit satellite communication technology, settlement displacement monitoring data, environment monitoring data, video monitoring data, equipment state information and high-precision position information acquired by a natural disaster monitoring station are transmitted to a remote control and data processing center through a low-orbit satellite, and are analyzed and processed to generate early warning information, and the early warning information is transmitted to a multistage early warning system through the low-orbit satellite, so that the transmission and the release of the natural disaster monitoring information are realized, the natural disaster monitoring and early warning have no communication range limitation, the wide-area natural disaster monitoring and early warning are realized, the timeliness and the reliability of the natural disaster monitoring and early warning are effectively improved, the early warning monitoring technology level is improved, and the early warning capability is improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a natural disaster monitoring early warning system based on low earth orbit satellite which characterized in that includes:
the natural disaster monitoring station is used for acquiring natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage in real time, arranging the natural environment monitoring information, the monitoring equipment state information and the position information into data packets and sending the data packets to the low-orbit satellite constellation;
the low-orbit satellite constellation is provided with a plurality of low-orbit satellites, inter-satellite links are arranged among the low-orbit satellites, the data packets are transmitted to the low-orbit satellites, the data packets are transmitted through the inter-satellite links, and then the data packets are sent to a remote control and data processing center through the low-orbit satellites;
the remote control and data processing center is provided with a database, historical data are arranged in the database, the remote control and data processing center carries out comparison analysis processing on data of a data packet and the historical data to obtain early warning information of different levels, the early warning information is transmitted to the low-earth-orbit satellite, and the early warning information is transmitted to the low-earth-orbit satellite through the inter-satellite link and is transmitted to a multi-stage early warning system;
the multi-stage early warning system comprises a monitoring platform and mobile equipment, wherein the monitoring platform and the mobile equipment are used for receiving early warning information and issuing corresponding control instructions according to the levels of the early warning information, the control instructions are transmitted to the low-orbit satellite through the multi-stage early warning system and then transmitted to the low-orbit satellite through the inter-satellite link, and the low-orbit satellite is transmitted to the natural disaster monitoring station to transfer relevant real-time monitoring information, so that the monitoring platform completes the issuance of the early warning information.
2. The natural disaster monitoring and early warning system and method based on the low earth orbit satellite as claimed in claim 1, wherein a disaster grade judging system is provided in the remote control and data processing center, the disaster grade judging system sets a corresponding threshold according to the historical data of the database, the remote control and data processing center decodes, analyzes and processes the data packet, guides the processed data into the preset threshold, and generates early warning information of corresponding grade by comparing the processed data with the threshold and transmits the early warning information to the multistage early warning system through the low earth orbit satellite.
3. The natural disaster monitoring and early warning system based on the low earth orbit satellite as claimed in claim 1, wherein the natural disaster monitoring station comprises a monitoring sensor, a data acquisition module, a control unit and a low earth orbit satellite communication module, wherein the input end of the monitoring sensor converts the acquired information into a plurality of electric signals, the output end of the monitoring sensor is connected with the data acquisition module, the data acquisition module converts the electric signals into a plurality of monitoring information, the control unit collects the plurality of monitoring information and transmits the monitoring information to the low earth orbit satellite communication module, the low earth orbit satellite communication module is in two-way communication interaction with the low earth orbit satellite, and the low earth orbit satellite communication module transmits the collected plurality of monitoring information to the low earth orbit satellite.
4. The natural disaster monitoring and early warning system and method based on the low earth orbit satellite as claimed in claim 3, wherein the natural disaster monitoring station further comprises a power management module, the power management module is a storage solar power module, and is responsible for power distribution in the natural disaster monitoring station.
5. The natural disaster monitoring and early warning system and method based on the low earth orbit satellite as claimed in claim 1, wherein the remote control and data processing center, the multi-stage early warning system and the natural disaster monitoring station are all in bidirectional communication interaction with the low earth orbit satellite respectively, wherein the remote control and data processing center is further configured to receive a control command of the multi-stage early warning system and send the control command to the natural disaster monitoring station for obtaining specified monitoring information.
6. The natural disaster monitoring and early warning method using the natural disaster monitoring and early warning system based on the low earth orbit satellite as claimed in any one of claims 1 to 5, characterized by comprising the following steps:
s1: the natural disaster monitoring station acquires real-time acquired natural environment monitoring information, monitoring equipment state information and position information of a region lacking ground network coverage, arranges the information into data packets and sends the data packets to the low-orbit satellite;
s2: the low earth orbit satellite transmits a data packet through an inter-satellite link and sends the data packet to the remote control and data processing center;
s3: the remote control and data processing center generates early warning information after analysis and processing, and sends the early warning information to the low-orbit satellite;
s4: the low earth orbit satellite transmits early warning information through an inter-satellite link and sends the early warning information to a multi-stage early warning system;
s5: the multi-stage early warning system completes the release of early warning information through a monitoring platform and mobile equipment;
s6: the multi-stage early warning system issues a control instruction according to the early warning information condition, and the control instruction is sent to a natural disaster monitoring station through the low-orbit satellite to call related real-time monitoring information.
7. The natural disaster monitoring and early warning system and method based on low earth orbit satellite as claimed in claim 6, wherein in step S3, further comprising the steps of:
s31: establishing a disaster grade judgment system and a database in the remote control and data processing center;
s32: storing natural disaster historical data in the database, and setting corresponding thresholds in a disaster grade judgment system, wherein the thresholds correspond to natural disaster historical data of different grades;
s33: the remote control and data processing center decodes, analyzes and processes the imported data packet, imports the processed data into the preset threshold, judges whether the processed data is abnormal or not by comparing the processed data with the threshold, and generates early warning information of corresponding level;
s34: and if the abnormal condition exists, transmitting the early warning information of the corresponding grade to the multi-grade early warning system through the low earth orbit satellite, otherwise, returning to the step S31.
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| CN114200547A (en) * | 2021-11-11 | 2022-03-18 | 西安中科西光航天科技有限公司 | Extreme climate disaster early warning system based on satellite remote sensing image |
| CN114759969A (en) * | 2022-03-07 | 2022-07-15 | 航天行云科技有限公司 | Water and soil quality monitoring method and system for shrimp and rice operation area |
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| CN114759969A (en) * | 2022-03-07 | 2022-07-15 | 航天行云科技有限公司 | Water and soil quality monitoring method and system for shrimp and rice operation area |
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