CN114063062A - Method and device for emergency monitoring of landslide disaster - Google Patents
Method and device for emergency monitoring of landslide disaster Download PDFInfo
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- CN114063062A CN114063062A CN202111370788.1A CN202111370788A CN114063062A CN 114063062 A CN114063062 A CN 114063062A CN 202111370788 A CN202111370788 A CN 202111370788A CN 114063062 A CN114063062 A CN 114063062A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
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- B64C39/02—Aircraft not otherwise provided for characterised by special use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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Abstract
The invention provides equipment for emergency monitoring of landslide disasters, which comprises an arc-shaped foundation synthetic aperture radar system, an unmanned aerial vehicle capable of carrying and throwing monitoring targets, a total station and a plurality of types of monitoring targets; the monitoring target comprises an angle reflecting prism and a GNSS all-in-one machine. The invention also provides a method for monitoring landslide disaster emergently, which comprises the steps of firstly judging the deformation trend regionally through the arc-shaped foundation synthetic aperture radar, warning and reminding monitoring personnel when the deformation reaches a set threshold value, and then selecting a monitoring mode with finer monitoring granularity in a to-be-enhanced monitoring area according to actual conditions; the monitoring system is suitable for long-term, medium-term and short-term monitoring of landslide disasters, monitoring equipment can be flexibly increased and decreased according to the condition of a monitored object, and the cost is saved on the premise of ensuring the monitoring effect.
Description
Technical Field
The invention relates to the technical field of surveying and mapping and safety monitoring, in particular to a method and equipment for emergency monitoring of landslide disasters.
Background
In the field of landslide disaster monitoring, common methods include GNSS monitoring, total station monitoring, crack meter monitoring, and the like, and ground-based synthetic aperture radar monitoring developed in recent years. Each of these monitoring methods has its advantages and disadvantages. For example, the ground-based synthetic aperture radar has a large monitoring range and high monitoring precision, can be used for non-contact remote monitoring, but has larger monitoring granularity, and generally judges regional deformation trend. The frequency of conventional GNSS monitoring can reach several seconds or even one second monitoring value, but the precision is only millimeter or even centimeter level, and GNSS equipment is required to be arranged at each monitoring point, so that the cost is high, and the operation risk is large. The total station can monitor millimeter-sized precision, one total station can monitor dozens of monitoring points, but the monitoring points need to be provided with prisms to achieve the expected precision.
When landslide disaster monitoring is carried out on mountains and the like, a lot of difficulties are faced, for example, equipment cannot be installed on a monitoring surface due to steep terrain; the monitoring range is large, and the cost is high due to excessive arrangement points; the monitoring time span is too large, the conventional manual monitoring site is inconvenient to install, and the cost is too high; whether the mountain is dangerous or not cannot be judged, and if too many devices are installed at one time, the cost is rapidly increased; mountain body vegetation is luxuriant, and equipment such as unmanned aerial vehicle oblique photography, airborne laser radar, three-dimensional laser scanner can't penetrate and monitor the earth's surface.
In summary, there is a need for a method and apparatus for emergency monitoring of landslide disaster to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide landslide disaster emergency monitoring equipment, which aims to solve the problem that the existing single monitoring mode is insufficient, improve the reliability and accuracy of monitoring and realize a better pre-alarm effect, and the specific technical scheme is as follows:
a landslide disaster emergency monitoring device comprises an arc-shaped foundation synthetic aperture radar system, an unmanned aerial vehicle capable of carrying and throwing a monitoring target, a total station and a plurality of types of monitoring targets; the monitoring target comprises an angle reflecting prism and a GNSS all-in-one machine.
Preferably, in the above technical solution, the angle reflection prism refers to: and bonding a glass main body of a total station reflecting prism at the concave vertex of the corner reflector to reflect radar signal waves and electromagnetic waves emitted by the total station.
Preferably among the above technical scheme, the device of jettisoninging is connected to unmanned aerial vehicle's bottom, the monitoring target is connected to the bottom of device of jettisoninging, realize the separation through remote control between device of jettisoninging and the monitoring target.
Preferably, the arc-based synthetic aperture radar system comprises an arc-based synthetic aperture radar and a matched monitoring system.
Preferably, in the above technical solution, the circular arc type ground synthetic aperture radar, the total station and the GNSS all-in-one machine have protection performance of IP 67.
Preferably, in the above technical solution, the circular arc type ground based synthetic aperture radar system, the total station and the GNSS all-in-one machine transmit the monitoring result to the monitoring center in a wireless transmission manner.
The invention also provides a method for emergency monitoring of landslide disasters, which adopts the equipment for emergency monitoring of landslide disasters; simultaneously dividing the scanning frequency of the circular arc type ground synthetic aperture radar into F from high to low0、F1、F2……FnA gear position; and dividing the maximum daily deformation amount into M from high to low0、M1、M2……MnThe gears correspond to the gears of the maximum deformation quantity every day one by one, wherein n is a natural number; the specific monitoring method comprises the following steps:
step S1: acquiring three-dimensional terrain point cloud data of a monitored object;
step S2: setting a scanning range of the arc foundation synthetic aperture radar, performing initial scanning, and superposing the scanning range on three-dimensional terrain point cloud data;
step S3: after radar is started, firstly adopting F0Scanning a monitored object by a gear, calculating the average daily maximum deformation of the i days, setting an initial scanning frequency gear of a radar according to the average daily maximum deformation of the i days, and scanning and monitoring the monitored object by adopting the gear, wherein i is a natural number more than or equal to 1;
step S4: calculating the daily maximum deformation amount of the previous day at 0 point every day, and when the gear corresponding to the daily maximum deformation amount of consecutive j days is lower than the current daily maximum deformation amount gear, reducing the scanning frequency gear by one gear; when the gear corresponding to the maximum deformation amount per day on the current day is higher than the gear corresponding to the maximum deformation amount per day, immediately increasing the scanning frequency gear by one gear;
step S5: when the gear corresponding to the daily maximum deformation amount of continuous k days is larger than or equal to the set gear threshold of the daily maximum deformation amount, an alarm is sent out to remind monitoring personnel;
step S6: monitoring personnel analyze monitoring data of the radar, find out a dangerous area on the three-dimensional model, set the dangerous area as a monitoring area to be enhanced, and extract coordinates of the dangerous area;
step S7: selecting a monitoring target according to the actual condition of a monitored object;
step S8: the central three-dimensional coordinate of the monitoring area to be enhanced is set as a destination of unmanned aerial vehicle navigation, the unmanned aerial vehicle carries the monitoring target to fly to the destination, and the monitoring target is released to the destination to realize switching of a finer-grained monitoring mode.
Preferably, in the above technical solution, in the step S1, the three-dimensional terrain point cloud data of the monitored object is obtained by means of unmanned aerial vehicle oblique photography or three-dimensional laser scanning.
Preferably, in the above technical solution, in step S7, when the distance radar of the monitored area to be enhanced is smaller than 800m, the angular reflection prism is selected, otherwise, the GNSS all-in-one machine is selected.
In the above technical solution, preferable, the finer-grained monitoring methods include three types: one is monitoring by combining an arc-shaped foundation synthetic aperture radar with an angle reflecting prism; the second method is that the total station is monitored by combining an angle reflecting prism; thirdly, monitoring by adopting a GNSS all-in-one machine; when the total station is adopted, the monitoring frequency is consistent with the current monitoring frequency of the radar.
The technical scheme of the invention has the following beneficial effects:
according to the equipment, only when the monitoring target needs to be laid, the personnel need to operate the unmanned aerial vehicle on site, the monitoring data can be sent to the monitoring center in the rest time, and the personnel can remotely check and analyze the data in the monitoring center. The circular-arc ground synthetic aperture radar is suitable for building structures such as dams, and is also suitable for valley type or basin type landforms on two sides, and the application objects are wide.
The monitoring method comprises the steps of firstly, carrying out regional judgment on deformation trend through the arc-shaped foundation synthetic aperture radar, carrying out early warning to remind monitoring personnel when the deformation reaches a set threshold value, and then selecting a monitoring mode with finer monitoring granularity in a to-be-enhanced monitoring area according to actual conditions; the monitoring system is suitable for long-term, medium-term and short-term monitoring of landslide disasters, monitoring equipment can be flexibly increased and decreased according to the condition of a monitored object, and the cost is saved on the premise of ensuring the monitoring effect. The monitoring equipment and the monitoring method improve the reliability and accuracy of monitoring and realize better pre-alarming effect.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for emergency monitoring of landslide hazard of the present invention;
FIG. 2 is a schematic diagram of a corner cube;
fig. 3 is a schematic diagram of a radar scan area.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1:
referring to fig. 1-3, an apparatus for emergency monitoring of landslide disaster includes an arc-type ground synthetic aperture radar system, an unmanned aerial vehicle capable of carrying and throwing a monitoring target, a total station, and a plurality of types of monitoring targets; the monitoring target comprises an angle reflecting prism and a GNSS all-in-one machine.
The corner reflection prism preferred in the present embodiment means: the glass body 2 of the total station reflecting prism is bonded at the concave vertex of the corner reflector 1, so that radar signal waves and electromagnetic waves emitted by the total station are reflected, as shown in fig. 2.
Preferably, the circular arc type ground synthetic aperture radar system, the total station and the GNSS all-in-one machine send the monitoring result to the monitoring center in a wireless transmission mode. The wireless transmission modes comprise 3G, 4G, 5G networks, WiFi and other modes.
Further preferably, the bottom of the unmanned aerial vehicle is connected with a throwing device, the bottom of the throwing device is connected with a monitoring target, and the throwing device and the monitoring target are separated through remote control. Device and unmanned aerial vehicle please see prior art specifically, in this embodiment unmanned aerial vehicle adopts many rotor unmanned aerial vehicle, and the load is not less than 5kg, specifically adopts big jiangding longitude and latitude M600PRO unmanned aerial vehicle, and the device of jettisoninging passes through POE with unmanned aerial vehicle and realizes power supply and communication.
The arc-shaped foundation synthetic aperture radar system comprises an arc-shaped foundation synthetic aperture radar and a matched monitoring system. The circular arc type ground synthetic aperture radar can realize the monitoring of 360 degrees or any angle range horizontally, the monitoring distance in the sight line direction is not less than 2km, and the monitoring precision reaches the submillimeter level. The monitoring system matched with the arc foundation synthetic aperture radar can superpose the radar scanning result on the three-dimensional terrain. The three-dimensional terrain is displayed in a three-dimensional engine by adopting three-dimensional point clouds (comprising six basic attribute values of three-dimensional coordinates X, Y, Z and colors R, G, B), and radar scanning results (namely accumulated deformation) are used as expansion attribute values of the point clouds (only the point clouds in the scanning range coverage range have expansion attributes). Particularly, the radar can realize the long-term automatic monitoring of unmanned on duty, can transmit the monitoring data back to the surveillance center through the wireless transmission mode. In this embodiment, an Online SAR 2000 circular-arc ground-based synthetic aperture radar is selected.
Referring to fig. 3, the topographic region covered by the irradiation scene of the arc foundation synthetic aperture radar is a monitoring range, is a sector grid, each monitoring unit is a sector unit, and the whole monitoring range has M × N monitoring units, i.e., M × N deformation monitoring values. M is the number of the distance directions, N is the number of the angle directions, and the angular resolution delta theta, the distance resolution delta r and the monitoring scanning range are jointly determined.
The GNSS all-in-one machine is a miniature all-in-one machine comprising a GNSS antenna, a receiver, a data processing terminal, a data transmission module, a power supply and other modules. The GNSS all-in-one machine can receive signals including but not limited to Beidou satellite (BDS), GPS satellite, GLONASS satellite and the like, and sends the absolute position coordinates of the earth surface where the antenna is located to a user monitoring center through PPP or differential positioning calculation to realize displacement monitoring. The GNSS all-in-one machine can realize continuous monitoring for no less than 14 days under the condition of no external power supply. The GNSS all-in-one machine can realize the use along with throwing, and transmits the monitoring data back to the monitoring center in a wireless transmission mode.
Further preferably, the circular arc type ground synthetic aperture radar, the total station and the GNSS all-in-one machine have protection performance of IP67, and can be deployed on a project site for unattended long-term monitoring. The equipment of this embodiment only needs personnel to on-the-spot operation unmanned aerial vehicle when laying the monitoring target, and monitoring data can be sent to the surveillance center in all the other times, and personnel are long-range look over the analysis data at the surveillance center can. The circular-arc ground synthetic aperture radar is suitable for building structures such as dams, and is also suitable for valley type or basin type landforms on two sides, and the application objects are wide.
The embodiment also provides a method for emergency monitoring of landslide disasters, which adopts the equipment for emergency monitoring of landslide disasters; simultaneously dividing the scanning frequency of the circular arc type ground synthetic aperture radar into F from high to low0、F1、F2……FnA gear position; and dividing the maximum daily deformation amount into M from high to low0、M1、M2……MnThe gears, the scanning frequency gears of the radar and the gears of the maximum deformation quantity every day are in one-to-one correspondence, namely MnCorresponds to FnWherein n is a natural number.
In this embodiment, n is 5, and the scanning frequency steps are divided from high to low: f0Continuous scanning, F1One scan for 10 min, F2One scan for 30 min, F3One hour scan, F4One three hour scan, F5-one scan for six hours; the maximum deformation amount per day is 6 grades, from high to low: m0(≥460.8mm)，M1(≥153.6mm)，M2(≥76.8mm)，M3(≥25.6mm)，M4(≥12.8mm)，M5(＜12.8mm)；
The contrast relation between the maximum deformation gear and the scanning frequency gear is as follows:
M0—F0、M1—F1、M2—F2、M3—F3、M4—F4、M5—F5；
the monitoring method comprises the following steps:
step S1: acquiring three-dimensional terrain point cloud data of a monitored object;
preferably, in step S1, the three-dimensional topographic point cloud data of the monitored object is obtained by unmanned aerial vehicle oblique photography or three-dimensional laser scanning.
Step S2: setting a scanning range of the arc foundation synthetic aperture radar, performing initial scanning, and overlaying the scanning range on three-dimensional terrain point cloud data, namely, assigning the three-dimensional terrain point cloud expansion attribute in the scanning range to 0.0;
step S3: after radar is started, firstly adopting F0Scanning a monitored object by a gear, calculating the average daily maximum deformation of the i days, setting an initial scanning frequency gear of a radar according to the average daily maximum deformation of the i days, and scanning and monitoring the monitored object by adopting the gear, wherein i is a natural number more than or equal to 1; in the embodiment, i is 7, namely the average daily maximum deformation amount of 7 days is calculated;
step S4: calculating the daily maximum deformation amount of the previous day at 0 point every day, and when the gear corresponding to the daily maximum deformation amount of consecutive j days is lower than the current daily maximum deformation amount gear, reducing the scanning frequency gear by one gear; when the gear corresponding to the maximum deformation amount per day on the current day is higher than the gear corresponding to the maximum deformation amount per day, immediately increasing the scanning frequency gear by one gear; in this embodiment, j is 3, that is, when the gear corresponding to the maximum daily deformation amount for 3 consecutive days is lower than the current gear corresponding to the maximum daily deformation amount, the scanning frequency gear is reduced by one gear.
Step S5: when the gear corresponding to the daily maximum deformation amount of continuous k days is larger than or equal to the set gear threshold of the daily maximum deformation amount, an alarm is sent out to remind monitoring personnel; in this embodiment, k is 7, and the gear threshold is M2(ii) a Namely when the maximum deformation amount per day for 7 continuous days corresponds to the gear position more than or equal to M2When the gear is shifted, an alarm is sent out to remind monitoring personnel;
step S6: monitoring personnel analyze monitoring data of the radar, find out a dangerous area on the three-dimensional model, set the dangerous area as a monitoring area to be enhanced, and extract coordinates of the dangerous area;
step S7: selecting a monitoring target according to the actual condition of a monitored object;
in the step S7, when the distance radar of the monitored area to be enhanced is less than 800m, selecting an angular reflection prism, otherwise, selecting a GNSS all-in-one machine;
step S8: the central three-dimensional coordinate of the monitoring area to be enhanced is set as a destination of unmanned aerial vehicle navigation, the unmanned aerial vehicle carries the monitoring target to fly to the destination, and the monitoring target is released to the destination to realize switching of a finer-grained monitoring mode. Preferably, when the distance is reduced by 50m to the to-be-enhanced monitoring area, an operator of the unmanned aerial vehicle is prompted to take over, the manually-operated unmanned aerial vehicle is close to the to-be-enhanced monitoring area, and the target is put in a proper position.
The finer-grained monitoring method in this embodiment includes three types: one is monitoring by combining an arc-shaped foundation synthetic aperture radar with an angle reflecting prism; the second method is that the total station is monitored by combining an angle reflecting prism; and the third method is to adopt a GNSS all-in-one machine for monitoring.
Preferably, the monitoring frequency of the total station is consistent with the current monitoring frequency of the radar when the total station is adopted.
Preferably, the daily maximum deformation amount calculation method is as follows: extracting radar accumulated deformation monitoring files within 24 hours, calculating deformation quantity (containing M multiplied by N data) of a single day, taking an absolute value of the deformation quantity of the single day, extracting the first 1000 values of the absolute value of the deformation quantity of the single day from big to small, and calculating an average value, wherein the result is the maximum deformation quantity per day. Particularly, the radar accumulated deformation monitoring file within 24 hours can be an accumulated deformation monitoring file from 0 point to 24 points, or can be an accumulated deformation monitoring file between two adjacent days at the same time, and the time interval between two adjacent days at the same time is only less than 30 minutes.
According to the monitoring method, firstly, the regional deformation trend is judged through the arc-shaped foundation synthetic aperture radar, when the deformation reaches a set threshold value, early warning is carried out to remind monitoring personnel, and then a monitoring mode with finer monitoring granularity is selected in a to-be-enhanced monitoring area according to actual conditions; the monitoring system is suitable for long-term, medium-term and short-term monitoring of landslide disasters, monitoring equipment can be flexibly increased and decreased according to the condition of a monitored object, and the cost is saved on the premise of ensuring the monitoring effect. The monitoring equipment and the monitoring method of the embodiment improve the reliability and accuracy of monitoring and realize better pre-alarm effect.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The equipment for the emergency monitoring of the landslide disaster is characterized by comprising an arc-shaped foundation synthetic aperture radar system, an unmanned aerial vehicle capable of carrying and throwing a monitoring target, a total station and a plurality of types of monitoring targets; the monitoring target comprises an angle reflecting prism and a GNSS all-in-one machine.
2. The apparatus for emergency monitoring of landslide hazard according to claim 1, wherein said corner cube refers to: and bonding a glass main body of a total station reflecting prism at the concave vertex of the corner reflector to reflect radar signal waves and electromagnetic waves emitted by the total station.
3. The landslide disaster emergency monitoring device of claim 2, wherein the bottom of the unmanned aerial vehicle is connected with a throwing device, the bottom of the throwing device is connected with a monitoring target, and the throwing device and the monitoring target are separated through remote control.
4. The landslide hazard emergency monitoring apparatus of claim 2 wherein said circular arc based synthetic aperture radar system comprises a circular arc based synthetic aperture radar and associated monitoring system.
5. The landslide hazard emergency monitoring apparatus of claim 4, wherein said circular arc ground based synthetic aperture radar, total station and GNSS all-in-one machine have protection capability of IP 67.
6. The landslide disaster emergency monitoring apparatus of any one of claims 1-5, wherein said circular arc type ground based synthetic aperture radar system, total station and GNSS all-in-one machine transmit monitoring results to a monitoring center by wireless transmission.
7. A method for emergency monitoring of landslide disasters, characterized by using the device for emergency monitoring of landslide disasters according to any one of claims 1-6; simultaneously dividing the scanning frequency of the circular arc type ground synthetic aperture radar into F from high to low0、F1、F2……FnA gear position; and dividing the maximum daily deformation amount into M from high to low0、M1、M2……MnThe gears correspond to the gears of the maximum deformation quantity every day one by one, wherein n is a natural number; the specific monitoring method comprises the following steps:
step S1: acquiring three-dimensional terrain point cloud data of a monitored object;
step S2: setting a scanning range of the arc foundation synthetic aperture radar, performing initial scanning, and superposing the scanning range on three-dimensional terrain point cloud data;
step S3: after radar is started, firstly adopting F0Scanning a monitored object by a gear, calculating the average daily maximum deformation of the i days, setting an initial scanning frequency gear of a radar according to the average daily maximum deformation of the i days, and scanning and monitoring the monitored object by adopting the gear, wherein i is a natural number more than or equal to 1;
step S4: calculating the daily maximum deformation amount of the previous day at 0 point every day, and when the gear corresponding to the daily maximum deformation amount of consecutive j days is lower than the current daily maximum deformation amount gear, reducing the scanning frequency gear by one gear; when the gear corresponding to the maximum deformation amount per day on the current day is higher than the gear corresponding to the maximum deformation amount per day, immediately increasing the scanning frequency gear by one gear;
step S5: when the gear corresponding to the daily maximum deformation amount of continuous k days is larger than or equal to the set gear threshold of the daily maximum deformation amount, an alarm is sent out to remind monitoring personnel;
step S6: monitoring personnel analyze monitoring data of the radar, find out a dangerous area on the three-dimensional model, set the dangerous area as a monitoring area to be enhanced, and extract coordinates of the dangerous area;
step S7: selecting a monitoring target according to the actual condition of a monitored object;
step S8: the central three-dimensional coordinate of the monitoring area to be enhanced is set as a destination of unmanned aerial vehicle navigation, the unmanned aerial vehicle carries the monitoring target to fly to the destination, and the monitoring target is released to the destination to realize switching of a finer-grained monitoring mode.
8. The method for emergency monitoring of landslide disaster according to claim 7, wherein in step S1, the three-dimensional topographic point cloud data of the monitored object is obtained by means of unmanned aerial vehicle oblique photography or three-dimensional laser scanning.
9. The method according to claim 7, wherein in step S7, when the distance radar of the area to be enhanced is less than 800m, the corner inverse prism is selected, otherwise, the GNSS all-in-one machine is selected.
10. The method for emergency monitoring of landslide disaster according to claim 9, wherein the finer grained monitoring means comprises three types: one is monitoring by combining an arc-shaped foundation synthetic aperture radar with an angle reflecting prism; the second method is that the total station is monitored by combining an angle reflecting prism; thirdly, monitoring by adopting a GNSS all-in-one machine; when the total station is adopted, the monitoring frequency is consistent with the current monitoring frequency of the radar.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966601A (en) * | 2022-08-01 | 2022-08-30 | 南京隼眼电子科技有限公司 | Mountain landslide prediction method based on millimeter wave radar and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966601A (en) * | 2022-08-01 | 2022-08-30 | 南京隼眼电子科技有限公司 | Mountain landslide prediction method based on millimeter wave radar and electronic equipment |
| CN114966601B (en) * | 2022-08-01 | 2022-10-21 | 南京隼眼电子科技有限公司 | Mountain landslide prediction method based on millimeter wave radar and electronic equipment |
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