Airborne infrared radiation characteristic measurement pod device

Abstract

The invention discloses an airborne infrared radiation characteristic measurement pod device. The airborne infrared radiation characteristic measurement pod device comprises a detection unit, a control unit and a servo platform, the detection unit and the control unit are mechanically connected with the servo platform through screws; the detection unit and the control unit are electrically connected with the servo platform through a connector; the detection unit comprises a visible light panchromatic camera, a medium-wave thermal infrared imager, a long-wave thermal infrared imager, a laser range finder and an atmospheric corrector; the control unit comprises a main control assembly, an air pressure control assembly, a temperature control assembly, a black body assembly, a POS assembly and a power supply assembly. The servo platform comprises a shell, an azimuth frame, a pitching frame, a damping assembly, a direct-current brushless torque motor, a rotary transformer and an encoder. The device is suitable for being installed on platforms such as manned aerial vehicles or unmanned aerial vehicles of rotor wings and fixed wings, visible light panchromatic imaging, medium-long wave infrared imaging and temperature measurement of targets in an area can be achieved, and meanwhile distance parameters and atmosphere parameter information on a transmission path are collected.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne pod design, and in particular relates to an airborne infrared radiation characteristic measuring pod device. Background Art

[0002] The target infrared radiation characteristic measurement mainly measures and analyzes the radiation characteristics of the target (and ground objects) in the infrared spectrum. It is of great significance in the accumulation of target infrared radiation characteristics, target infrared characteristic simulation and infrared-based target detection and recognition.

[0003] At present, the infrared radiation characteristic measurement devices carried by satellites are relatively mature. Although satellites usually have a higher carrying capacity, they are limited by the revisit time, the measurement cycle is long, and the time resolution is low, which makes it difficult to meet the demand for high time resolution. The airborne infrared radiation measurement pod is an infrared radiation measurement device mounted on a manned / unmanned aerial vehicle platform, which performs flight missions with the unmanned aerial vehicle to image and measure the target. However, due to the low flying altitude of the aircraft platform, which is generally located in the troposphere, the unstable flight environment causes the pod to be affected by vibration, air pressure changes, temperature changes, etc., which has a great negative impact on the radiation temperature measurement.

[0004] At present, infrared optoelectronic pods mainly measure radiation temperature by collecting visible light and infrared spectral data, usually using visible light + medium-wave infrared or visible light + long-wave infrared. They are mainly used in application scenarios such as search, imaging, and reconnaissance. They have problems such as incomplete band coverage, low infrared radiation measurement accuracy, transmission links greatly affected by the atmosphere, and lack of auxiliary information such as distance positioning. Summary of the invention

[0005] The technology of the present invention solves the problem: Overcoming the shortcomings of the prior art, providing an airborne infrared radiation characteristic measurement pod device, which is suitable for installation on platforms such as rotorcraft, fixed-wing manned aircraft or unmanned aircraft, and can achieve visible light full-color imaging, medium- and long-wave infrared imaging, and temperature measurement of targets in the area, while collecting distance parameters and atmospheric parameter information on the transmission path.

[0006] In order to solve the above technical problems, the present invention discloses an airborne infrared radiation characteristics measurement pod device, comprising: a detection unit, a control unit and a servo platform; wherein the detection unit and the control unit are mechanically connected to the servo platform through screws; the detection unit and the control unit are electrically connected to the servo platform through connectors; the servo platform provides mechanical installation, communication and data transmission interfaces for the detection unit and the control unit.

[0007] In the above-mentioned airborne infrared radiation characteristic measurement pod device, the detection unit includes the following five detection sensors:

[0008] Visible light panchromatic camera, used to collect high-definition panchromatic image data of the target area;

[0009] Medium-wave infrared thermal imager, used to collect high-definition medium-wave infrared image data of the target area;

[0010] Long-wave infrared thermal imager, used to collect high-definition long-wave infrared image data of the target area;

[0011] Laser rangefinder, used to collect distance information between the target and the pod;

[0012] Atmospheric correction instrument, used to collect water vapor and aerosol content on the transmission path from the target to the pod.

[0013] In the above-mentioned airborne infrared radiation characteristics measurement pod device, the five detection sensors are arranged as follows: the medium-wave infrared thermal imager and the long-wave infrared thermal imager are arranged at the bottom; the atmospheric corrector is arranged in the middle; the visible light panchromatic camera and the laser rangefinder are arranged at the top; among them, after the optical axes of the five detection sensors are adjusted to be consistent, they are installed as a whole on the pitch frame of the servo platform.

[0014] In the above-mentioned airborne infrared radiation characteristic measurement pod device, a temperature monitoring sensor is installed on the outer shell of each detection sensor.

[0015] In the above-mentioned airborne infrared radiation characteristic measurement pod device, the control unit includes: a main control component, an air pressure control component, a temperature control component, a black body component, a POS component and a power supply component;

[0016] The main control component is used to comprehensively control the detection unit and the servo platform, and to process the data collected by the detection unit to complete target detection and recognition and data standardization processing;

[0017] The air pressure control component is used to sense the state of the pressure relief valve and control the air pressure of the entire cabin to adapt to the low-pressure environment at high altitudes;

[0018] Temperature control component, used to sense multiple temperature monitoring sensors to achieve temperature control of the entire cabin;

[0019] Blackbody assembly, used to provide two temperature calibration points to achieve on-board radiation calibration for medium-wave infrared thermal imagers and long-wave infrared thermal imagers;

[0020] The POS component includes: a receiver module and an IMU module; wherein the receiver module is used to receive satellite radio frequency signals to achieve pod geographic positioning; the IMU module is used to sense the overall three-dimensional posture of the pod;

[0021] The power supply component is used to receive external 28V DC power input and provide power to other units and components after internal conversion.

[0022] In the above-mentioned airborne infrared radiation characteristic measurement pod device, the servo platform is a two-axis two-frame platform, including: a shell, an azimuth frame, a pitch frame, a shock absorbing assembly, a DC brushless torque motor a, a rotary transformer a, an encoder a, a DC brushless torque motor b, a rotary transformer b and an encoder b;

[0023] The pitch frame is the inner frame, the azimuth frame is the outer frame, the pitch frame is mounted on the azimuth frame, and the azimuth frame is fixed on the top of the shell; wherein the axes of the azimuth frame and the pitch frame are perpendicular to each other and intersect, and the common load detection unit makes a certain range of pitch and azimuth direction angle adjustment and pointing to ensure that the overall center of gravity of the device remains unchanged;

[0024] Shock-absorbing components, used to isolate the carrier aircraft from disturbances;

[0025] A brushless DC torque motor a, a rotary transformer a and an encoder a are installed on the azimuth frame; wherein the brushless DC torque motor a is used to drive the azimuth frame to rotate; the rotary transformer a and the encoder a are used to detect the position of the azimuth frame;

[0026] The brushless DC torque motor b, the rotary transformer b and the encoder b are installed on the pitch frame; wherein the brushless DC torque motor b is used to drive the pitch frame to rotate; the rotary transformer b and the encoder b are used to detect the position of the pitch frame.

[0027] In the above-mentioned airborne infrared radiation characteristic measurement pod device, the detection unit, main control component, air pressure control component, temperature control component, black body component and IMU module are installed on the pitch frame; the receiver module and power supply component are installed on the top of the azimuth frame; and the shock absorption component is connected to the top of the azimuth frame.

[0028] In the above-mentioned airborne infrared radiation characteristic measurement pod device, the overall shape of the device is a spherical structure to reduce air resistance.

[0029] The present invention has the following advantages:

[0030] (1) The present invention discloses an airborne infrared radiation characteristic measurement pod device, which adopts a compact structural design. The detection unit has a visible light full-color camera (zoom), a medium-wave infrared thermal imager (fixed focus), a long-wave infrared thermal imager (fixed focus) and a laser rangefinder, which can quickly identify and locate the target, and realize the medium-wave infrared and long-wave infrared precise temperature measurement of the target, and obtain the target distance auxiliary information; the main control unit has a high-precision POS component to realize high-precision positioning of the target.

[0031] (2) The present invention discloses an airborne infrared radiation characteristic measurement pod device, in which five detection sensors are installed on the pitch frame of a servo platform. Four shock absorbers are installed on the top of the servo platform, which cooperate with the control circuit and attitude measurement sensor of the servo platform to realize the stabilization function, isolate the vibration and shaking of the carrier, and ensure that the output of each detection sensor remains stable in the airborne environment.

[0032] (3) The present invention discloses an airborne infrared radiation characteristic measurement pod device. To improve the temperature measurement accuracy, an internal calibration black body is used for calibration after imaging. At the same time, multiple temperature measurement points are set in the cabin to accurately control and record the cabin temperature for image correction.

[0033] (4) The present invention discloses an airborne infrared radiation characteristic measurement pod device, which installs an atmospheric correction instrument and an infrared thermal imager together on a servo platform, synchronously collects water vapor and aerosol content on the transmission link during the thermal imager imaging process, supports high-precision radiation correction and atmospheric correction of the collected raw data on the ground, and improves the inversion accuracy of the target radiation temperature and the real temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a block diagram of the composition of an airborne infrared radiation characteristic measurement pod device in an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the composition of a detection unit in an embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the installation of a detection unit and a main control unit in an embodiment of the present invention;

[0037] Figure 4 is a schematic diagram of the appearance of a blackbody component in an embodiment of the present invention;

[0038] Figure 5 It is a schematic diagram of the composition of a servo platform in an embodiment of the present invention;

[0039] Figure 6 is a cross-sectional view of an airborne infrared radiation characteristic measurement pod device in an embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of the layout of a detection unit window in an embodiment of the present invention;

[0041] Figure 8 The present invention is a flowchart of an airborne infrared radiation characteristic measurement pod device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] One of the core ideas of the present invention is to provide an airborne infrared radiation characteristic measurement pod device with long action distance, high spatial resolution, high temperature measurement accuracy, small size, light weight, high stability and accuracy, good air tightness and good electromagnetic compatibility, such as Figures 1 to 7 As shown, the airborne infrared radiation characteristic measurement pod device includes: a detection unit 1, a control unit 2 and a servo platform 3. The detection unit 1 and the control unit 2 are mechanically connected to the servo platform 3 through screws; the detection unit 1 and the control unit 2 are electrically connected to the servo platform 3 through connectors; and the servo platform 3 provides mechanical installation, communication and data transmission interfaces for the detection unit 1 and the control unit 2.

[0044] In this embodiment, the detection unit 1 mainly includes the following five detection sensors:

[0045] A visible light panchromatic camera 11 is used to collect high-definition panchromatic image data of the target area;

[0046] A medium-wave infrared thermal imager 12, used for collecting high-definition medium-wave infrared image data of a target area;

[0047] A long-wave infrared thermal imager 13, used for collecting high-definition long-wave infrared image data of a target area;

[0048] A laser rangefinder 14, used to collect distance information between the target and the pod;

[0049] The atmospheric correction instrument 15 is used to collect the water vapor and aerosol content on the transmission path from the target to the pod.

[0050] In this embodiment, in order to realize that multiple detection sensors are installed in the cabin at the same time, image the target at the same time, and reduce the additional weight as much as possible, the following layout is adopted according to the size and weight characteristics of the five detection sensors: the medium-wave infrared thermal imager 12 and the long-wave infrared thermal imager 13 are arranged at the bottom; the atmospheric correction instrument 15 is arranged in the middle; the visible light panchromatic camera 11 and the laser rangefinder 14 are arranged at the top; after the optical axes of the five detection sensors are adjusted to be consistent, they are installed as a whole on the pitch frame 33 of the servo platform 3. In addition, a temperature monitoring sensor is installed on the outer shell of each detection sensor.

[0051] In this embodiment, the control unit 2 mainly includes: a main control component 21, an air pressure control component 22, a temperature control component 23, a black body component 24, a POS component 25 and a power supply component 26. Among them:

[0052] The main control component 21 is used to comprehensively control the detection unit 1 and the servo platform 3, and to process the data collected by the detection unit 1 to complete target detection and recognition and data standardization processing.

[0053] The air pressure control component 22 is used to sense the state of the pressure relief valve and control the air pressure of the entire cabin to adapt to the high-altitude low-pressure environment.

[0054] The temperature control component 23 is used to sense multiple temperature monitoring sensors to achieve temperature control of the entire cabin.

[0055] The black body assembly 24 is used to provide two temperature calibration points to achieve on-board radiation calibration for the medium-wave infrared thermal imager and the long-wave infrared thermal imager.

[0056] The POS component 25 includes: a receiver module 251 and an IMU module 252. The receiver module 251 is used to receive satellite radio frequency signals to achieve the geographic positioning of the pod; the IMU module 252 is used to sense the overall three-dimensional posture of the pod.

[0057] The power supply component 26 is used to receive an external 28V DC power input and provide power to other units and components after internal conversion.

[0058] In this embodiment, the servo platform 3 is a two-axis two-frame platform, mainly including: a shell 31, an azimuth frame 32, a pitch frame 33, a shock-absorbing assembly 34, a DC brushless torque motor a321, a rotary transformer a322, an encoder a323, a DC brushless torque motor b331, a rotary transformer b332 and an encoder b333. Among them, the pitch frame 33 is an inner frame, the azimuth frame 32 is an outer frame, the pitch frame 33 is installed on the azimuth frame 32, and the azimuth frame 32 is fixed on the top of the shell 31; the axes of the azimuth frame 32 and the pitch frame 33 are perpendicular to each other and intersect, and the common load detection unit 1 makes a certain range of pitch and azimuth direction angle adjustment and pointing to ensure that the overall center of gravity of the device remains unchanged. The shock-absorbing assembly 34 is used to isolate the disturbance of the carrier aircraft. The brushless DC torque motor a321, the rotary transformer a322 and the encoder a323 are installed on the azimuth frame 32; the brushless DC torque motor a321 is used to drive the azimuth frame 32 to rotate; the rotary transformer a322 and the encoder a323 are used to detect the position of the azimuth frame 32. The brushless DC torque motor b331, the rotary transformer b332 and the encoder b333 are installed on the pitch frame 33; the brushless DC torque motor b331 is used to drive the pitch frame 33 to rotate; the rotary transformer b332 and the encoder b333 are used to detect the position of the pitch frame 33. The housing 31 mainly includes: a front cover 311, a rear cover 312, a pressure relief valve 313 and a detection unit window 314.

[0059] In this embodiment, the detection unit 1, the main control component 21, the air pressure control component 22, the temperature control component 23, the blackbody component 24 and the IMU module 252 are installed on the pitch frame 33; the receiver module 251 and the power supply component 26 are installed on the top of the azimuth frame 32; and the shock absorbing component 34 is connected to the top of the azimuth frame 32.

[0060] In this embodiment, the overall shape of the device is a spherical structure to reduce air resistance.

[0061] In this embodiment, the airborne infrared radiation characteristic measurement pod device is innovatively designed from the following aspects:

[0062] In terms of quality characteristic design: based on the torque balance method, the theoretical center of mass of the detection unit and the main control unit falls on the rotating axis. During assembly and debugging, a small amount of counterweight is used to make the actual center of mass of the detection unit and the main control unit fall on the rotating axis, eliminating the eccentric overload torque caused by design and manufacturing errors.

[0063] In terms of frame limit design: a two-level limit method is adopted. The first level is soft limit, which limits the position of the azimuth frame and pitch frame in the control program; the second level is hard limit, which adopts structural limit method to limit the rotation of the azimuth frame and pitch frame within their respective ranges.

[0064] In terms of air tightness and air pressure regulation design: the entire pod is designed as an airtight cabin. In order to adapt to the low air pressure and low temperature environmental conditions at high altitudes, a pressure relief valve is installed on the shell of the servo platform to monitor the air pressure in the cabin.

[0065] In terms of temperature control design: a temperature monitoring sensor is installed on the outer shell of each detection sensor, and the temperature inside the cabin is monitored and controlled by the main control component.

[0066] In terms of sealing design: an integrated special-shaped sealing strip is used to ensure the sealing of the shell, an oil seal is used to seal the pitch frame, and the "glue dispensing + pressure ring" method is used to fix the detection unit window of the shell and the metal structure of the front cover.

[0067] In terms of external connector design: straight clamps are used to fasten metal triple-proof plugs, with a protection level of up to IP67.

[0068] In terms of anti-salt spray design: the shell adopts a spherical design to avoid water accumulation and prevent the deposition of water, dust and salt spray. The entire shell is made of the same material and highly corrosion-resistant paint to prevent galvanic corrosion; the exposed fixing screws and shafts of the outer shell and shock-absorbing components are made of corrosion-resistant material stainless steel 316L; the internal circuit board of the main control component is sprayed with three-proof paint to enhance the circuit system's moisture-proof, mildew-proof and salt spray-proof functions.

[0069] In terms of anti-fog / rain / snow / ice design: the detection unit window of the shell adopts a flat design to prevent the accumulation of rain and snow on the detection unit window; the outer side of the protective glass of the detection unit window is coated with a hydrophobic film to reduce the contact area between rain and the surface of the protective glass and the residue of raindrops on the surface of the protective glass. At the same time, a built-in wiper is provided to promptly scrape off the rain attached to the surface of the protective glass to ensure normal use when it rains. The main control component senses and adjusts the temperature of the entire cabin, and adopts dual protection measures of directional hot air and glass heating. When the surface environment of each detection sensor lens of the detection unit is suddenly cold, the fog, frost and thin ice on the lens surface are effectively removed, and at the same time, the condensation of fog, frost and even ice on the detection unit window is prevented.

[0070] Based on the above embodiment, a specific example is given below to illustrate

[0071] like Figure 1 As shown in the figure, the airborne infrared radiation characteristic measurement pod device consists of a detection unit, a control unit and a servo platform. The detection unit and the main control unit are mechanically connected to the servo platform through screws and electrically connected to the servo platform through connectors. The servo platform provides mechanical installation, communication and data transmission interfaces for the detection unit and the main control unit.

[0072] The detection unit consists of five detection sensors: a visible light panchromatic camera, a medium-wave infrared thermal imager, a long-wave infrared thermal imager, a laser rangefinder, and an atmospheric correction instrument. The window arrangement is: the upper left is the visible light panchromatic camera window, the upper right is the laser rangefinder window, the middle is the synchronous atmospheric correction instrument window, the lower left is the long-wave infrared thermal imager window, and the lower right is the medium-wave infrared thermal imager window. The field of view of each detection sensor is designed to be approximately 4.5°×3.5°.

[0073] Combining the requirements of resolution and observation distance, the instantaneous field of view IFOV can be obtained as:

[0074] IFOV=resolution / observation distance

[0075] Combining the field of view angle requirements and instantaneous resolution, the detector specification requirements of the detection sensor can be obtained:

[0076] N = FOV / atan(IFOV)

[0077] Where N represents the number of pixels in the horizontal or vertical direction of the detector, and FOV represents the horizontal or vertical gaze field of view.

[0078] The medium-wave infrared thermal imager and long-wave infrared thermal imager are selected as 640*512 (pixel size 15um).

[0079] Combined with the detection sensor pixel size, the focal length can be obtained:

[0080] Focal length = pixel size / IFOV

[0081] The optical paths of the visible light panchromatic camera, medium-wave infrared thermal imager, long-wave infrared thermal imager, laser rangefinder, and atmospheric corrector are parallel and fixed on the pitch frame. Temperature monitoring sensors are provided on the housings of the above five detection sensors.

[0082] The main control unit consists of the main control component, air pressure control component, temperature control component, black body component, POS component and power supply component. Among them, the main control component, air pressure control component, temperature control component, black body component and IMU module are installed on the pitch frame, and the black body component is installed on the top of the pitch frame. The black body component uses a black body with good temperature uniformity and stability. In order to achieve high-precision temperature measurement and correction, the internal calibration black body is measured and calibrated on the ground at regular intervals.

[0083] The servo platform is a two-axis two-frame platform, consisting of a housing, an azimuth frame (and azimuth axis system), a pitch frame (and pitch axis system), a shock-absorbing assembly, a DC brushless torque motor a, a rotary transformer a, an encoder a, a DC brushless torque motor b, a rotary transformer b, and an encoder b. The shock-absorbing assembly isolates the disturbance of the carrier aircraft. The axes of the azimuth frame and the pitch frame are perpendicular and intersecting to each other. The common load detection unit makes a certain range of pitch and azimuth angle adjustment and pointing to ensure that the center of gravity of the device remains unchanged. The shock-absorbing assembly includes four shock absorbers, which are installed on the top of the servo platform to isolate the vibration and shaking of the carrier aircraft.

[0084] The pod device has a rotation diameter of 490mm, a height of 640mm and a weight of 65kg. It can achieve n×360° continuous and unlimited rotation in the horizontal direction, and a rotation range of -90° to +110° in the pitch direction. The azimuth and pitch angular speeds are not less than 60° / s.

[0085] The visible light panchromatic camera (zoom), medium-wave infrared thermal imager (fixed focus) and long-wave infrared thermal imager (fixed focus) can output visible light panchromatic images, medium-wave infrared images and long-wave infrared images respectively, and output target temperature in infrared working mode; 4 shock absorbers are installed on the servo platform, which cooperate with the control loop and attitude measurement sensor of the servo platform to realize the stabilization function, isolate the vibration and shaking of the carrier, and ensure that the output of each detection sensor remains stable in the airborne environment; the pod has the characteristics of compact structure and wide adaptability.

[0086] like Figure 8 As shown in the figure, after taking off, the pod device flies to the mission target area, starts searching for targets after entering the set distance, transmits the image back for confirmation, starts imaging the target after the target is confirmed, and immediately turns back to the calibration black body for internal calibration after the imaging is completed. When processing the data on the ground, the target image data is corrected based on the internal calibration data and the cabin temperature information synchronously measured by the pod.

[0087] In summary, the airborne infrared radiation characteristic measurement pod device of the present invention adopts a variety of detection sensors such as a visible light panchromatic camera, a medium-wave infrared thermal imager, a long-wave infrared thermal imager, a laser rangefinder and an atmospheric corrector, adopts an azimuth + pitch two-axis two-frame servo platform, and adopts a main control component, a temperature control component, an air pressure control component, a black body component, a POS component and a power supply component to form a main control unit, and the whole cabin is designed as an airtight cabin. The advantages of the present invention are: long action distance, high spatial resolution, high internal calibration accuracy, high temperature measurement accuracy, small size, light weight, can complete visible light panchromatic, medium-wave infrared and long-wave infrared simultaneous imaging, laser ranging and atmospheric parameter synchronous collection, target temperature measurement, target search, discovery and tracking and other tasks, can operate in low-altitude, medium-altitude, high-altitude and various environments, and can be installed on platforms such as rotary-wing and fixed-wing manned or unmanned aircraft.

[0088] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0089] The contents not described in detail in the specification of the present invention belong to the common knowledge of the professionals in this field.

Claims

1. An airborne infrared radiation characteristic measurement pod device, characterized in that: include: A detection unit (1), a control unit (2) and a servo platform (3); wherein the detection unit (1) and the control unit (2) are mechanically connected to the servo platform (3) by means of screws; the detection unit (1) and the control unit (2) are electrically connected to the servo platform (3) by means of connectors; and the servo platform (3) provides mechanical installation, communication and data transmission interfaces for the detection unit (1) and the control unit (2).

2. The airborne infrared radiation characteristic measurement pod device according to claim 1, characterized in that: The detection unit (1) includes the following five detection sensors: A visible light panchromatic camera (11) is used to collect high-definition panchromatic image data of the target area; A medium-wave infrared thermal imager (12), used for collecting high-definition medium-wave infrared image data of a target area; A long-wave infrared thermal imager (13), used for collecting high-definition long-wave infrared image data of a target area; A laser rangefinder (14), used to collect distance information between the target and the pod; The atmospheric correction instrument (15) is used to collect the water vapor and aerosol content on the transmission path from the target to the pod.

3. The airborne infrared radiation characteristic measurement pod device according to claim 2, characterized in that: The five detection sensors are arranged in the following manner: a medium-wave infrared thermal imager (12) and a long-wave infrared thermal imager (13) are arranged at the bottom; an atmospheric correction instrument (15) is arranged in the middle; a visible light full-color camera (11) and a laser rangefinder (14) are arranged at the top; and after the optical axes of the five detection sensors are adjusted to be consistent, they are integrally mounted on a pitch frame (33) of a servo platform (3).

4. The airborne infrared radiation characteristic measurement pod device according to claim 2, characterized in that: A temperature monitoring sensor is installed on the housing of each detection sensor.

5. The airborne infrared radiation characteristic measurement pod device according to claim 4, characterized in that: A control unit (2), comprising: a main control component (21), an air pressure control component (22), a temperature control component (23), a black body component (24), a POS component (25) and a power supply component (26); A main control component (21) is used to comprehensively control the detection unit (1) and the servo platform (3), and to process the data collected by the detection unit (1) to complete target detection and recognition and data standardization processing; An air pressure control component (22) is used to sense the state of the pressure relief valve and control the air pressure of the entire cabin to adapt to the high-altitude low-pressure environment; A temperature control component (23) is used to sense multiple temperature monitoring sensors to achieve temperature control of the entire cabin; A black body component (24) is used to provide two temperature calibration points to achieve on-board radiation calibration of a medium-wave infrared thermal imager (12) and a long-wave infrared thermal imager (13); The POS component (25) includes: a receiver module (251) and an IMU module (252); wherein the receiver module (251) is used to receive satellite radio frequency signals to achieve geographic positioning of the pod; and the IMU module (252) is used to sense the overall three-dimensional posture of the pod; The power supply component (26) is used to receive an external 28V DC power input and provide power to other units and components after internal conversion.

6. The airborne infrared radiation characteristic measurement pod device according to claim 5, characterized in that: The servo platform (3) is a two-axis two-frame platform, comprising: a housing (31), an azimuth frame (32), a pitch frame (33), a shock absorbing assembly (34), a DC brushless torque motor a (321), a rotary transformer a (322), an encoder a (323), a DC brushless torque motor b (331), a rotary transformer b (332) and an encoder b (333); The pitch frame (33) is an inner frame, and the azimuth frame (32) is an outer frame. The pitch frame (33) is mounted on the azimuth frame (32), and the azimuth frame (32) is fixed on the top of the housing (31); wherein the axes of the azimuth frame (32) and the pitch frame (33) are perpendicular to each other and intersect, and the common load detection unit (1) performs pitch and azimuth angle adjustment and pointing within a certain range, thereby ensuring that the overall center of gravity of the device remains unchanged; A shock absorbing assembly (34) for isolating disturbances of the carrier aircraft; A brushless DC torque motor a (321), a rotary transformer a (322) and an encoder a (323) are installed on the azimuth frame (32); wherein the brushless DC torque motor a (321) is used to drive the azimuth frame (32) to rotate; and the rotary transformer a (322) and the encoder a (323) are used to detect the position of the azimuth frame (32); A brushless DC torque motor b (331), a rotary transformer b (332) and an encoder b (333) are installed on a pitch frame (33); wherein the brushless DC torque motor b (331) is used to drive the pitch frame (33) to rotate; and the rotary transformer b (332) and the encoder b (333) are used to detect the position of the pitch frame (33).

7. The airborne infrared radiation characteristic measurement pod device according to claim 6, characterized in that: The detection unit (1), the main control component (21), the air pressure control component (22), the temperature control component (23), the black body component (24) and the IMU module (252) are installed on the pitch frame (33); the receiver module (251) and the power supply component (26) are installed on the top of the azimuth frame (32); and the shock absorbing component (34) is connected to the top of the azimuth frame (32).

8. The airborne infrared radiation characteristic measurement pod device according to claim 1, characterized in that: The overall shape of the device is a spherical structure to reduce air resistance.

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