CN111323805A - Air three-dimensional gamma imaging monitoring system - Google Patents

Air three-dimensional gamma imaging monitoring system Download PDF

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Publication number
CN111323805A
CN111323805A CN201811541362.6A CN201811541362A CN111323805A CN 111323805 A CN111323805 A CN 111323805A CN 201811541362 A CN201811541362 A CN 201811541362A CN 111323805 A CN111323805 A CN 111323805A
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gamma
aerial
ground
dimensional
data transmission
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韩善彪
吕雪艳
张伟
杨斌
岳会国
任建保
王尔奇
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NUCLEAR AND RADIATION SAFETY CENTER
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NUCLEAR AND RADIATION SAFETY CENTER
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01TMEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/02Dosimeters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01TMEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16Measuring radiation intensity
    • G01T1/169Exploration, location of contaminated surface areas
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01TMEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/36Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01TMEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00Details of radiation-measuring instruments

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  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The invention discloses an aerial three-dimensional gamma imaging monitoring system, which comprises a flying platform, gamma radiation imaging equipment, a differential GPS antenna and a data transmission link aerial transmitting end, wherein the gamma radiation imaging equipment, the differential GPS antenna and the data transmission link aerial transmitting end are arranged on the flying platform, and a data transmission link ground receiving end and a ground monitoring station are arranged on the ground or in ground vehicles. The invention has the advantages that: the defects of the existing aerial radiation monitoring technical means are overcome, and the monitoring function and performance of the aerial radiation monitoring system are added and comprehensively improved.

Description

Air three-dimensional gamma imaging monitoring system
Technical Field
The invention belongs to a nuclear and radiation environment monitoring system, and particularly relates to an aerial three-dimensional gamma imaging monitoring system.
Background
The aerial radiation monitoring technology takes airplanes (including a man-machine and an unmanned aerial vehicle) as a carrying tool, can rapidly reach a target area to carry out monitoring work by carrying a suitable radiation detector and auxiliary equipment, and is particularly applied to nuclear and radiation accident monitoring and emergency monitoring. The system has the characteristics of difficulty in being limited by environmental terrain conditions and personnel protection and the like, can enter regions which are difficult to reach for monitoring, has the remarkable characteristics of large detectable range, high speed, high efficiency, flexibility, maneuverability and the like, and is an advanced and effective monitoring technical means.
The aerial radiation monitoring system can transmit a monitoring result to the ground measurement and control station in real time through the data transmission equipment; the aerial radiation monitoring device has high efficiency, low cost and convenient large-area work, is a reliable basis for radiation protection decision-making, has a monitoring system and a monitoring method which are greatly developed, and the current aerial radiation monitoring device does not have the functions of three-dimensional positioning (particularly accurate positioning) of a radioactive source and radiation hotspot imaging, and cannot obtain the position and radiation distribution information of the radioactive source in time.
The gamma camera is used for detecting the position and the radioactive intensity of radioactive substances, is a mobile or portable gamma-ray real-time imaging system, visually judges the position and the intensity distribution of a radioactive pollution source by generating a two-dimensional intensity image of a detection area, can obtain a clear and continuous hot spot (energy spectrum display, specified nuclide pollution 'hot spot' display and total pollution 'hot spot' display) distribution diagram in a short time, realizes hot spot identification, and has wide application in the aspects of nuclear emergency, national security, military control verification, anti-terrorism, nuclear retirement, radiology and the like. At present, a gamma camera is mostly used for gamma ray measurement under a static scene, and only a radioactive source can be positioned in two dimensions. The current aerial radiation monitoring is basically positioned in qualitative or semi-quantitative monitoring, and the ground radiation monitoring assists in developing quantitative monitoring. In order to meet the actual work requirement, combine the latest development of radiation detection materials and methods and improve the functions of the existing aerial radiation monitoring system, the invention provides an aerial three-dimensional gamma imaging monitoring system, innovatively combines the gamma radiation imaging technology with the aerial radiation monitoring technology, forms the aerial radiation monitoring system together with a data transmission system and a ground measurement and control station, realizes aerial radiation monitoring, accurately positions a ground radioactive hotspot or area in three dimensions, images the position and the surrounding environment information, can acquire gamma dose rate and gamma energy spectrum data, and greatly improves the functions of the aerial radiation monitoring system.
The prior aviation radiation monitoring system has no three-dimensional positioning and imaging functions of a radioactive source or a polluted area, and cannot realize the precise positioning and hot spot imaging of the radioactive source; the gamma camera is generally used on the ground or on a vehicle, can position, image and identify nuclides for a radioactive source, but is mostly used for static measurement of the ground and a local part in an application scene, and cannot realize dynamic and three-dimensional measurement of the radioactive source. The two monitoring devices and functions are not developed and applied due to the fact that the platforms and the matching integration capacity limit values are respectively arranged, the application innovation design is deficient, the integration is not organically combined, an integral system cannot be formed, and the matching basic technical method and auxiliary devices (such as data transmission devices) are not developed and applied.
Disclosure of Invention
The invention aims to provide an aerial three-dimensional gamma imaging monitoring system, which overcomes the defects of the existing aerial radiation monitoring technical means, and adds and comprehensively improves the monitoring function and performance of the aerial radiation monitoring system.
The technical scheme of the invention is as follows: the aerial three-dimensional gamma imaging monitoring system comprises a flying platform, gamma radiation imaging equipment, a differential GPS antenna and a data transmission link aerial transmitting end, wherein the gamma radiation imaging equipment, the differential GPS antenna and the data transmission link aerial transmitting end are arranged on the airplane platform, and a data transmission link ground receiving end and a ground measurement and control station are arranged on the ground or in ground vehicles.
The flying platform is an airplane which can hover or has a slow flying speed less than 10 km/h.
The flying platform is used for bearing or mounting gamma radiation imaging equipment, a differential GPS antenna and an aerial transmitting end of a data transmission link, and carrying out aerial flying or hovering operation.
The gamma radiation imaging device collects gamma radiation information including gamma radiation field information, gamma radiation energy spectrum and field influence pictures.
The differential GPS antenna is connected with the gamma radiation imaging equipment and used for accurately positioning three-dimensional position information of the flying platform, including longitude, latitude and height, and recording flying postures of the airplane, including flying directions and angles.
The data transmission link aerial transmitting terminal is linked with the flying platform, the gamma radiation imaging equipment and the differential GPS antenna and is used for transmitting various state data and collecting data of the equipment.
The data transmission link ground receiving end receives the information through the wireless data transmission link aerial transmitting end, receives all the information sent by the transmitting end, is simultaneously connected with the ground measurement and control station, and transmits the received information to the ground measurement and control station.
The ground measurement and control station comprehensively receives data information transmitted by the ground receiving end of the data transmission link, and controls, stores, processes, analyzes and displays the quality of the transmitted data.
The invention has the beneficial effects that: the novel aerial radiation monitoring (particularly unmanned aerial vehicle radiation monitoring technology and three-dimensional positioning technology) and gamma radiation imaging technology (particularly new materials of tellurium, zinc and cadmium detection technology and Compton imaging technology) are combined, and a set of aerial three-dimensional gamma imaging monitoring system is formed together with a real-time online data transmission system and a ground measurement and control station, so that the radiation precise positioning and three-dimensional imaging of radioactive hot spots or three-dimensional spaces of areas in a large area range are realized, the gamma dose rate, gamma energy spectrum data and radioactive hot spot position (longitude, latitude and height) information of the aerial and earth surfaces can be obtained, meanwhile, the data transmission system realizes the data transmission of a gamma camera data aerial-ground-data center, and the ground station realizes the purposes of receiving, storing, analyzing, displaying and the like of the gamma camera monitoring data on the ground.
Drawings
FIG. 1 is a schematic structural diagram of an aerial three-dimensional gamma imaging monitoring system provided by the invention;
fig. 2 is a schematic diagram of a principle of an aerial three-dimensional gamma imaging monitoring system.
In the figure, 1 an airplane platform, 2 gamma radiation imaging equipment, 3 a differential GPS antenna, 4 a data transmission link aerial transmitting terminal, 5 a data transmission link ground receiving terminal and 6 a ground measurement and control station.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, an aerial three-dimensional gamma imaging monitoring system selects a flying platform 1 which can hover or fly at a slow speed (the speed is less than 10 km/h), a gamma radiation imaging device 2, a differential GPS antenna 3 and a data transmission link aerial transmitting terminal 4 are installed on the airplane platform 1, and the factors such as the reasonable distribution of the center of gravity, the size of an installation space and the like are considered during installation and fixation; the data transmission link ground receiving end 5 and the ground measurement and control station 6 can be arranged on the ground or in a ground vehicle.
The flying platform 1 is used for carrying or mounting a gamma radiation imaging device 2, a differential GPS antenna 3 and a data transmission link aerial transmitting terminal 4, and carrying out aerial flying or hovering operation.
The gamma radiation imaging device 2 is a core detection device and collects gamma radiation information (gamma radiation field information, gamma radiation energy spectrum) and field influence pictures.
The differential GPS antenna 3 is connected with the gamma radiation imaging device 2 and is used for accurately positioning three-dimensional position information (longitude, latitude and height) of the flying platform and recording the flying attitude (flying direction and angle) of the airplane.
The data transmission link aerial transmitting terminal 4 is linked with the flying platform 1, the gamma radiation imaging device 2 and the differential GPS antenna 3, and is used for transmitting various state data and collected data of the devices.
The data transmission link ground receiving end 5 receives the information through the wireless data transmission link aerial transmitting end 4, receives all the information sent by the transmitting end, is simultaneously connected with the ground measurement and control station 6, and transmits the received information to the ground measurement and control station 6.
The ground measurement and control station 6 receives the data information transmitted by the ground receiving end of the data transmission link comprehensively, and controls, stores, processes, analyzes and displays the quality of the transmitted data. The remote control, tracking, monitoring information transmission and mass transfer control of the aerial three-dimensional gamma imaging monitoring system are realized; relevant data are displayed in real time and processed in a later period, and the functions of basic dose rate monitoring, spectrometer measurement and analysis, imaging, hotspot positioning and the like of a gamma camera are realized; the three-dimensional positioning system has a function or an algorithm module for three-dimensionally positioning the radiation hot spot, and provides the position coordinates (the position comprises longitude and latitude, the effective height from the ground, and the positioning precision (deviation) of a coordinate space is less than or equal to +/-2 m) and the three-dimensional imaging result of the radiation hot spot.
The key points are as follows:
air three-dimensional gamma imaging monitoring system (flight platform, gamma radiation imaging equipment, differential GPS antenna, data transmission link, ground measurement and control station (including software)), three-dimensional positioning technology and imaging technology method, nuclide identification and dose rate
Integral solution of air three-dimensional gamma imaging monitoring system
The unmanned aerial vehicle flight platform, the gamma radiation imaging equipment and auxiliary equipment (a flight control system and a differential positioning system) thereof, a data transmission link, special software and a data algorithm are integrated, and a set of aerial three-dimensional gamma imaging monitoring system is creatively developed.
(II) three-dimensional positioning technology and imaging technology method
The method provides the three-dimensional accurate positioning (within 2m of error) of the local radiation hot spot (a radioactive source on the ground or in a certain floor room) of a target area in the air for the first time, and the target area can be intuitively positioned by a three-dimensional image.
A set of aerial three-dimensional positioning technology and an imaging technology method are developed, the three-dimensional positioning technology method can give out the position (longitude, latitude and height) information of a radiation hotspot or area, and the imaging technology method is a sampling image three-dimensional imaging function and is a visual field picture of the position of the radiation hotspot or area.
The invention innovatively combines the latest aerial radiation monitoring (especially unmanned aerial vehicle radiation monitoring technology and three-dimensional positioning technology) and the latest gamma radiation imaging technology (especially new material cadmium zinc telluride detection technology and Compton imaging technology), and forms a set of aerial three-dimensional gamma imaging monitoring system together with a real-time online data transmission system and a ground measurement and control station, realizes the radiation accurate positioning and three-dimensional imaging of radioactive hot spots or three-dimensional space of a region in a large area, can acquire the gamma dose rate, gamma energy spectrum data and the position (longitude, latitude and height) information of radioactive hot spots in the air and on the earth, meanwhile, the data transmission system realizes the data transmission of the gamma camera data air-ground-data center, and the ground station realizes the purposes of receiving, storing, analyzing, displaying and the like of the gamma camera monitoring data on the ground.
(1) Aircraft platform selection and integration technology
The integral design and functional configuration of the flight platform, the gamma radiation imaging equipment, the data transmission link and the overall software need to be reasonably and scientifically integrated, optimized and developed according to the requirement of an air three-dimensional gamma imaging monitoring system.
(a) The airplane platform is generally divided into a man-machine airplane and an unmanned airplane, wherein the man-machine airplane is divided into a fixed wing airplane and a helicopter; unmanned aerial vehicle can divide into large-scale unmanned aerial vehicle and small-size unmanned aerial vehicle according to bearing and duration, can divide into many rotor unmanned aerial vehicle, fixed wing unmanned aerial vehicle and unmanned helicopter according to the model. The type selection of the airplane is very important, and the flight control performance, the cruising ability, the loading capacity, the external mounting capacity and the like of the airplane platform need to be considered and modified comprehensively.
(b) There are several kinds of gamma radiation imaging devices, mainly (1) the traditional gamma camera is a primary imaging device, mainly composed of probe, electronics reading system and data acquisition and processing display system 3, the probe usually has two configuration modes: (a) collimators, scintillation crystals (NaI, CsI, etc.) and CCD cameras (b) collimators, scintillation crystals (NaI, CsI, etc.), position sensitive photomultiplier tubes (PSPMT). It is mainly characterized by inconvenience: the volume is large, the weight is large, the carrying is inconvenient, the energy spectrum can be given, but the energy resolution is low, and the upper limit and the lower limit of the detection are high. (2) The gamma camera with new material has probe made of new material Cadmium Zinc Telluride (CZT) and new spectrometer without heavy collimator. Its advantages are small size, light weight, easy carrying about, real-time energy spectrum, high energy resolution and low lower and upper limit of detection.
(c) The three-dimensional gamma imaging monitoring system has high requirements on the position information and the flight attitude of equipment, and needs to record the flight attitude in the air, the measurement azimuth of gamma radiation imaging equipment and accurate longitude, latitude and altitude coordinates in real time.
(d) Flight control of the data transmission link aircraft platform has a data transmission link, and is mainly influenced by data transmission hardware, a transmission protocol, transmission bandwidth, transmission frequency and stability when not suitable for the requirement of aerial radiation monitoring operation.
(e) Application software and data processing functions
At present, no special and ready-made application software exists for the aerial three-dimensional gamma imaging monitoring, and aerial monitoring data needs to be subjected to secondary processing and detailed analysis on the ground. Specialized data processing algorithms and functions require entirely new designs and developments.
The technical scheme is as follows: the mature and advanced air three-dimensional gamma imaging monitoring system needs the integration of a whole set of hardware, software and application algorithm, and is a whole set of comprehensive systematic design development and technical application scheme. The invention provides a solution for the integral integration of an aerial radiation monitoring system.
On the human-machine side, selecting a helicopter capable of hovering; the unmanned aerial vehicle selects a small and medium-sized multi-rotor unmanned aerial vehicle and an unmanned helicopter with moderate performance.
In the aspect of gamma radiation imaging equipment, a gamma camera made of a novel material for the ground is selected, a probe portion adopts a novel material of tellurium-zinc-cadmium (CZT, CdZnTe crystal) and a novel multi-channel digital spectrometer device, and the gamma radiation imaging equipment has the functions of gamma dose rate, gamma energy spectrum measurement and Compton scattering imaging. The weight of the equipment is not more than 10 kg.
The data transmission link has an independent wireless transmission function, can transmit monitoring data (including time information, position information, radiation dose rate, spectrum data and gamma imaging pictures) and unmanned aerial vehicle flight control information (including position information, longitude and latitude and height) to the ground in a wireless mode (which can be a transmission mode such as 4G wireless transmission and radio frequency), and is connected with terminal equipment such as an ipad, a mobile phone and a PC on the ground.
In the aspects of special software and data algorithm, 1) relevant data can be displayed in real time and processed in a later period, and the basic functions of the gamma camera such as dose rate monitoring, spectrometer measurement and analysis, imaging and hotspot positioning are realized; 2) meanwhile, the system has a function or an algorithm module for three-dimensional positioning of the radiation hotspot and gives the position coordinate of the radiation hotspot (the position comprises longitude and latitude, effective height from the ground, and the positioning precision (deviation) of a coordinate space is less than or equal to +/-2 m)
The invention aims to creatively research and develop a set of aerial three-dimensional gamma imaging monitoring system by means of system optimization and integration of an unmanned aerial vehicle flight platform, gamma radiation imaging equipment, auxiliary equipment (a flight control system and a differential positioning system) of the gamma radiation imaging equipment, a data transmission link, special software and a data algorithm.
(2) Key technology (key protection): three-dimensional positioning and imaging techniques
The invention provides a method for carrying out aerial monitoring on a local radiation hotspot (a radioactive source on the ground or in a certain floor room) of a target area in the air for the first time to carry out three-dimensional accurate positioning (the error is within 2 meters) on the ground by using the conventional gamma radiation imaging technology which is a two-dimensional positioning (longitude and latitude) and imaging technology used on the ground.
At present, the aviation radiation monitoring searches and surveys the polluted area, and (1) the accurate three-dimensional positioning can not be carried out yet, and the accurate position information of longitude and latitude and height is given out. (2) The aerial radiation monitoring data and the pollution distribution information can be used jointly by a geographic information system, but cannot be combined with the on-site image data for use, namely, the three-dimensional image cannot be visually positioned.
That is, the precise positioning and searching, retrieving or processing work of the polluted area or radioactive source by the aerial radiation monitoring needs to be carried out by means of ground monitoring means for precise positioning and quantitative analysis.
The technical scheme is as follows:
a set of aerial three-dimensional positioning technology and an imaging technology method are developed, the three-dimensional positioning technology method can give out the position (longitude, latitude and height) information of a radiation hotspot or area, and the imaging technology method is a sampling image three-dimensional imaging function and is a visual field picture of the position of the radiation hotspot or area.
And a high-performance differential Global Positioning System (GPS) antenna is selected to give accurate position (longitude, latitude and altitude) information and airplane flight attitude (flight direction and angle) of the air three-dimensional gamma imaging monitoring system in real time.
And selecting high-performance imaging equipment to collect the position field photos of the radiation hot spots or areas in real time.
A Compton scattering imaging algorithm in gamma radiation imaging equipment is adopted, a two-dimensional positioning algorithm is added with one-dimensional height information and is expanded into a three-dimensional positioning algorithm, meanwhile, the difference between the installation position of the gamma radiation imaging equipment and the position of a differential Global Positioning System (GPS) antenna is considered, and the position information is corrected through three-dimensional position information matrix conversion.
The working modes of the three-dimensional positioning technology and the imaging technology are as follows:
three-dimensional positioning technology: the gamma radiation imaging device acquires image information of a target in a static mode, and the imaging mode is called staring imaging, has the characteristic of being capable of working all day long, and can continuously monitor a key area and identify a specific target. The gamma radiation imaging device performs staring imaging on the detection area to generate two-dimensional plane image information of the detection area, performs multiple imaging on the detection area by changing the position of the camera for multiple times (more than or equal to 3) in the air to obtain multi-angle two-dimensional plane images and radioactivity information related to the detection area, and performs coordinate conversion through a three-dimensional reconstruction technology of the two-dimensional images to obtain three-dimensional coordinate information related to radioactive substances in the detection area.
The three-dimensional imaging technical method comprises the following steps: aiming at a static target and a moving target, a sampling channel of a gamma ray imaging system obtains enough space spectrum observation sampling by a space convolution method, a Fourier transform relation is formed between an observation signal after preprocessing and a target scattering function, and a three-dimensional image of the target can be reconstructed by combining position field photo information of an acquired radiation hotspot or region through the reshaping and related transformation of the space spectrum.
(3) Data transmission technique
The aviation radiation monitoring is an important component of radiation monitoring, has the remarkable characteristics of rapidness, timeliness, illumination dose reduction, large-area monitoring and the like, and can quickly obtain a radiation monitoring result which is a reliable basis for radiation protection decision. In the aviation radiation monitoring, the aerial monitoring data volume is large, the analysis work is complex and tedious, and the existing aviation radiation monitoring data is mainly read and stored on the ground in real time on an airplane and then is subjected to fine analysis and drawing. The method cannot observe the monitoring data in real time, is not beneficial to developing technology research and judgment in time and making decisions so as to guide aerial survey work.
The communication data transmission and remote measurement technology is a prerequisite for ensuring rapid monitoring, and the real rapid real-time monitoring effect is only achieved by transmitting the data measured in the air to a ground station or a control command center in real time. Based on the consideration of the factors, the development of a set of aviation radiation monitoring data transmission system has great significance for aviation radiation monitoring.
At present, a flight control system of an aircraft platform has a data transmission link, and is mainly influenced by data transmission hardware, a transmission protocol, transmission bandwidth, transmission frequency and stability when not suitable for the requirement of aerial radiation monitoring operation.
The wireless data transmission technology mainly comprises the following steps: satellite transmission, GPRS wireless transmission, data transfer stations, etc.
The satellite transmission effect is good, but the bandwidth of the transmission data is limited, and the transmission requirement of large aerial survey data volume cannot be met;
the GPRS wireless data transmission is suitable for intermittent, sudden and frequent small-amount transmission, but the GPRS flow cost is higher, the transmission data volume is small, and the safety and reliability are lower;
the data transmission radio station has the advantages of low cost, flexible networking, large data transmission quantity, high real-time performance, good reliability and stability, the maximum transmission distance can reach 50km, but the communication is easily influenced by surrounding buildings, the curvature of the earth and the like, and the installation cost is high.
The invention provides an independent wireless transmission link for the aerial radiation monitoring environment of rapid navigation of an aircraft platform and ground-air remote data transmission, and monitoring data (including time information, position information, radiation dose rate and spectrum data and gamma imaging pictures) and unmanned aerial vehicle flight control information (including position information, longitude and latitude and height) can be transmitted to the ground in a wireless mode (which can be a transmission mode of 4G wireless transmission, radio frequency and the like) and connected with terminal equipment such as ipads, mobile phones, PCs and the like on the ground.
The system combines the data transmission radio communication technology (RF), the VPN technology and the 4G communication technology, an RF wireless local area network and a virtual private network are built, the switch function of the 4G router is utilized to connect the two network systems, real-time, rapid and long-distance transmission of monitoring data between an airplane, the ground and a monitoring center is realized, the system is applied to multiple actual combat work, and the effect is good.
(4) Ground station software technology and data processing function
At present, no special and ready-made application software exists for the aerial three-dimensional gamma imaging monitoring, and aerial monitoring data needs to be subjected to secondary processing and detailed analysis on the ground. Specialized data processing algorithms and functions require entirely new designs and developments.
The technical scheme is as follows:
a ground station system, a plurality of ground stations,
1) the remote control, tracking, monitoring information transmission and mass transfer control of the air three-dimensional gamma imaging monitoring system are realized.
2) The system can display and post-process related data in real time, and realize the basic functions of the gamma camera such as dose rate monitoring, spectrometer measurement and analysis, imaging and hotspot positioning;
3) the three-dimensional positioning system has a function or an algorithm module for three-dimensionally positioning the radiation hot spot, and provides the position coordinates (the position comprises longitude and latitude, effective height from the ground, and the positioning precision (deviation) of a coordinate space is less than or equal to +/-2 m) of the radiation hot spot.

Claims (8)

1. Aerial three-dimensional gamma imaging monitoring system, its characterized in that: the aerial monitoring system comprises a flying platform (1), gamma radiation imaging equipment (2), a differential GPS antenna (3) and a data transmission link aerial transmitting end (4), wherein the data transmission link aerial transmitting end (1) is arranged on the flying platform, and a data transmission link ground receiving end (5) and a ground monitoring and controlling station (6) are arranged on the ground or in ground vehicles.
2. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the flying platform (1) is an airplane which can hover or has a slow flying speed less than 10 km/h.
3. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the flight platform (1) is used for bearing or mounting gamma radiation imaging equipment (2), a differential GPS antenna (3) and a data transmission link aerial transmitting terminal (4) and carrying out aerial flight or hovering operation.
4. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the gamma radiation imaging device (2) collects gamma radiation information including gamma radiation field information, gamma radiation energy spectrum and field influence pictures.
5. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the differential GPS antenna (3) is connected with the gamma radiation imaging device (2) and is used for accurately positioning three-dimensional position information of the flying platform, including longitude, latitude and height, and recording flying postures of the airplane, including flying directions and angles.
6. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the data transmission link aerial transmitting terminal (4) is linked with the flying platform (1), the gamma radiation imaging equipment (2) and the differential GPS antenna (3) and is used for transmitting various types of state data and collecting data of the equipment.
7. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the data transmission link ground receiving end (5) receives the information through the wireless data transmission link aerial transmitting end (4), receives all information sent by the transmitting end, is simultaneously connected with the ground measurement and control station (6), and transmits the received information to the ground measurement and control station (6).
8. The airborne three-dimensional gamma imaging monitoring system of claim 1, wherein: the ground measurement and control station (6) comprehensively receives data information transmitted by the ground receiving end of the data transmission link, and controls, stores, processes, analyzes and displays the quality of the transmitted data.
CN201811541362.6A 2018-12-17 2018-12-17 Air three-dimensional gamma imaging monitoring system Pending CN111323805A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110988956A (en) * 2019-11-25 2020-04-10 中国辐射防护研究院 Method and device for measuring space gamma dose rate radiation field
CN112285438A (en) * 2020-11-19 2021-01-29 重庆建安仪器有限责任公司 Aerial 3D radiation monitoring system based on aerial location
CN113504561A (en) * 2021-07-15 2021-10-15 山西安弘检测技术有限公司 Dosimeter system capable of real-time monitoring and detection method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110988956A (en) * 2019-11-25 2020-04-10 中国辐射防护研究院 Method and device for measuring space gamma dose rate radiation field
CN112285438A (en) * 2020-11-19 2021-01-29 重庆建安仪器有限责任公司 Aerial 3D radiation monitoring system based on aerial location
CN113504561A (en) * 2021-07-15 2021-10-15 山西安弘检测技术有限公司 Dosimeter system capable of real-time monitoring and detection method
CN113504561B (en) * 2021-07-15 2023-06-13 山西安弘检测技术有限公司 Dosimeter system capable of being monitored in real time and detection method

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