Rapid acquisition device for BRDF spectral data in the field

Abstract

This invention provides a rapid field BRDF spectral data acquisition device, relating to the field of remote sensing technology. It includes a ground measurement integration device and a controller. The ground measurement integration device comprises: a fixed pole, a vertical drive motor and its control line, an optical fiber arm assembly, a connecting rod, an optical fiber, a horizontal disk and its azimuth pointer, a horizontal drive motor and its control line, and a control box. The controller controls the horizontal drive motor and the vertical drive motor to operate according to a first target step size and a second target step size, respectively, and controls the spectrometer to perform spectral acquisition. This invention enables a lightweight, portable, easy-to-operate, short-time measurement device for rapid field BRDF spectral data acquisition with a wide range of applications.

Description

Technical Field

[0001] This invention relates to the field of remote sensing device technology, and in particular to a rapid acquisition device for BRDF spectral data in the field. Background Technology

[0002] BRDF measurement is the process of experimentally determining and analyzing the bidirectional reflection distribution function. BRDF is an important physical quantity describing the reflection characteristics of an object's surface.

[0003] In terms of BRDF measurement technology, applications outside the field of remote sensing technology are mainly concentrated in laboratories, and are completed through turntables and robotic arms. These devices have high measurement accuracy but are also relatively expensive. The biggest problem is that they are not suitable for field BRDF measurements in the vast hemisphere of remote sensing space.

[0004] This shows that the remote sensing data measurement methods in related technologies have technical problems that make them unsuitable for field BRDF measurements. Summary of the Invention

[0005] This invention provides a rapid field BRDF spectral data acquisition device to address the shortcomings of existing remote sensing data measurement methods that are not suitable for field BRDF measurements. It achieves a lightweight, portable, easy-to-operate, short-time measurement process, and wide-ranging applicability rapid field BRDF spectral data acquisition device.

[0006] This invention provides a rapid acquisition device for BRDF spectral data in the field, including a ground measurement integrated device and a controller;

[0007] The ground measurement integrated device includes:

[0008] A fixing rod, comprising a primary fixing rod and a secondary fixing rod; the primary fixing rod can be inserted into the secondary fixing rod, and the primary fixing rod and the secondary fixing rod are fixed by a pin.

[0009] A vertical drive motor and a vertical motor control line are provided. The vertical drive motor is connected to the first-stage fixed rod and moves up and down along the first-stage fixed rod with a first target step length via a thread. The vertical motor control line connects the vertical drive motor and the controller to provide power and signal control.

[0010] A fiber optic arm assembly, comprising: a fiber optic arm and a fiber optic fixed probe; the bottom end of the fiber optic arm is connected to the primary fixing rod via a sleeve, and the fiber optic fixed probe is fitted onto the top end of the fiber optic arm via threads or snaps;

[0011] A connecting rod, the two ends of which are respectively connected to the vertical drive motor and the fiber optic arm via movable bolts;

[0012] An optical fiber is installed within the fixed rod and the optical fiber arm assembly. The first end of the optical fiber is connected to the optical fiber fixed probe, and the second end of the optical fiber is connected to the spectrometer within the controller.

[0013] A horizontal disc and an azimuth pointer are provided. The horizontal disc is vertically connected to the primary fixed rod via a damper. The azimuth pointer is rigidly connected to the primary fixed rod and is mounted against the horizontal disc.

[0014] A horizontal drive motor for a horizontal disk and a control line for the horizontal disk motor are provided. The horizontal drive motor for the horizontal disk is mounted on the first-stage fixed rod through a damper and is rigidly connected to the horizontal disk vertically. The horizontal drive motor for the horizontal disk is used to drive the horizontal disk to rotate around the first-stage fixed rod according to a second target step length. The control line for the horizontal drive motor for the horizontal disk is connected to the controller to provide power and signal control.

[0015] The control box includes: a power supply compartment, a spectrometer compartment, a controller compartment, and a cable compartment; the control box is connected to the secondary fixing rod.

[0016] The controller is used to control the horizontal drive motor of the horizontal disk and the vertical drive motor to operate according to the first target step size and the second target step size, respectively; and to control the spectrometer to perform spectral acquisition.

[0017] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided, wherein the fiber optic arm includes a first-stage rod and a second-stage rod, the first-stage rod is equipped with a stepping rail, and the first-stage rod can be retracted into the second-stage rod.

[0018] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided, wherein the fiber optic arm assembly further includes: a fiber optic fixed probe drive motor, which is used to drive the fiber optic fixed probe to move on the first-stage rod according to a third target step length limit.

[0019] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided. The ground measurement integrated device further includes: a fixed base, wherein the fixed base includes: a counterweight tray, a fixed disk assembly, a fixed bracket, and a horizontal adjustment knob assembly; the control box is mounted on the counterweight tray, and the counterweight tray is rigidly and vertically connected to the fixed disk assembly; the fixed bracket is connected to the fixed disk assembly via a folding rod; the horizontal adjustment knob assembly is threadedly connected to the bottom of the fixed disk assembly for adjusting the height of the fixed disk assembly at different positions.

[0020] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided. The ground measurement integrated device further includes: a field-of-view image acquisition device and a video acquisition control line. The field-of-view image acquisition device is installed inside the fiber optic fixed probe and is used for image acquisition. The video acquisition control line connects the field-of-view image acquisition device and the controller to provide power and signal control.

[0021] According to the present invention, a rapid field BRDF spectral data acquisition device is provided, wherein the field image acquisition device includes a miniature camera, wherein the miniature camera is used to acquire images and store them in a preset format when a trigger signal is received.

[0022] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided, wherein the controller is connected to the horizontal disk motor control line, the vertical motor control line, the video acquisition control line, and the spectrometer signal line.

[0023] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided, wherein the controller is further connected to a control signal line and a power supply line, the control signal line being used to transmit control signals, and the power supply line being used to supply power to the controller.

[0024] According to the present invention, a rapid acquisition device for BRDF spectral data in the field is provided, wherein the leveling disk includes: a 360-degree angle scale and a level bubble, the level bubble being used to adjust the leveling state of the leveling disk.

[0025] The rapid acquisition device for BRDF spectral data in the field provided by this invention, through the pin-fixed design of the primary and secondary fixed rods, and the function of the vertical drive motor driving the fiber optic arm assembly to move up and down along the primary fixed rod, can achieve flexible height adjustment to adapt to different field environments and measurement needs; both the vertical drive motor and the horizontal drive motor of the horizontal disk are precisely controlled by the controller and can operate according to the preset first target step size and second target step size. This precise control capability ensures the accuracy and consistency of spectral data acquisition, improving the reliability of measurement results. The design of the fiber optic arm assembly allows the fixed fiber optic probe to be stably and flexibly pointed at the target area, thereby effectively collecting spectral data. The connection between the fiber optic cable and the spectrometer ensures real-time data transmission and processing, improving data acquisition efficiency. The control box integrates a mobile power supply compartment, spectrometer compartment, controller compartment, and cable compartment, making the entire device more compact and portable, facilitating rapid deployment and mobile measurement in the field. Thus, the field BRDF spectral data rapid acquisition device, with its high flexibility and adjustability, precise measurement and control, efficient data acquisition capability, portability and durability, and ease of operation and maintenance, provides technical support for the rapid and automatic acquisition of field spectral data. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced one by one below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the rapid acquisition device for BRDF spectral data in the field provided by the present invention.

[0028] Figure 2 This is a schematic diagram of the controller connection provided by the present invention.

[0029] Figure 3 This is a schematic diagram of the overall structure of the rapid acquisition device for BRDF spectral data in the field provided by the present invention.

[0030] Figure 4 This is a flowchart illustrating a spectral measurement control process provided by the present invention.

[0031] Figure 5 This is a schematic diagram of hemispherical space measurement projection provided by the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] In terms of BRDF measurement technology, applications outside the field of remote sensing technology are mainly concentrated in laboratories, and are completed through turntables and robotic arms. These devices have high measurement accuracy but are also relatively expensive. The biggest problem is that they are not suitable for field BRDF measurements in the vast hemisphere of remote sensing space.

[0034] Devices developed for remote sensing applications are mainly divided into three categories. One category is based on ground circular rails and space sliding rails to realize the positioning and measurement of detectors (such as fiber optic probes of spectrometers) in hemispherical space. This method is a relatively traditional measurement method, which is mature and relatively reliable, but its defects are also quite obvious, namely, it is bulky and relatively cumbersome to operate and install. In addition, the size of the sliding rail also limits the spatial measurement range that it can complete, and the shadows generated by the sliding rail will also affect the measurement results.

[0035] Another type involves replacing the spatial slide rail with a lever arm structure, which expands its measurement range and is relatively more convenient. However, this increases the operational burden and automation level in order to improve convenience. During the measurement process, all the states of the various device components are manually adjusted, which increases the measurement time and unreliability.

[0036] Another type combines slide rails with lever arm structures, using tracks and track vehicles to move the detector to the designed position within the hemispherical space. This is an innovative solution, but the use of slide rails inevitably sacrifices convenience and measurement space range to some extent, and the degree of automation also needs to be improved.

[0037] To address these issues, the present invention provides an (automatic) rapid acquisition device for BRDF spectral data in the field. It completely abandons the ground-based circular track and spatial semi-circular slide rail, adopting a two-section lightweight column-pole structure to construct a field hemispherical BRDF measurement device. Relying on a retractable fiber optic arm carrying an angle-adjustable fiber optic cable and a fiber optic field-of-view image acquisition device, the device uses computer programming to edit measurement control commands. The controller issues control signals to drive a horizontal drive motor to rapidly adjust the azimuth angle of the fiber optic arm, and a vertical drive motor to rapidly adjust the zenith angle of the fiber optic arm. The signal triggers the spectrometer to acquire the spectrum. Then, based on the control commands, it automatically adjusts the azimuth and zenith angles to enter the next positioning point for measurement, until all measurements (command blocks) are completed.

[0038] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the rapid acquisition device for BRDF spectral data in the field provided by the present invention, as shown below. Figure 1 As shown, the device includes the following ground measurement integration unit and controller:

[0039] The ground measurement integrated device includes:

[0040] The fixing rod 11 includes a primary fixing rod 111 and a secondary fixing rod 112; the primary fixing rod 111 can be inserted into the secondary fixing rod 112, and the primary fixing rod 111 and the secondary fixing rod 112 are fixed by a pin.

[0041] The vertical drive motor 12 is connected to the vertical motor control line 13. The vertical drive motor 12 is connected to the first-stage fixed rod 111 and moves up and down along the first-stage fixed rod 111 with a first target step length via a thread. The vertical motor control line 13 connects the vertical drive motor 12 to the controller to provide power and signal control.

[0042] The fiber optic arm assembly 14 includes: a fiber optic arm 141 and a fiber optic fixed probe 142; the bottom end of the fiber optic arm 141 is connected to a primary fixing rod 111 via a sleeve, and the fiber optic fixed probe 142 is fitted onto the top end of the fiber optic arm 141 via threads or snaps.

[0043] The connecting rod 15 has two ends connected to the vertical drive motor 12 and the fiber optic arm 141 respectively via movable bolts.

[0044] Fiber 16 is installed in the fixed rod 11 and fiber arm assembly 14. The first end of fiber 16 is connected to the fiber fixed probe 142, and the second end of fiber 16 is connected to the spectrometer in the controller.

[0045] The horizontal disc 17 and the azimuth pointer 18 are vertically connected to the first-level fixed rod 111 via a damper. The azimuth pointer 18 is rigidly connected to the first-level fixed rod 111 and is placed against the horizontal disc.

[0046] The horizontal drive motor 19 and the horizontal drive motor control line 20 of the horizontal disk are connected to the first-stage fixed rod 111 via a damper assembly and are rigidly connected to the horizontal disk 17 vertically. The horizontal drive motor 19 is used to drive the horizontal disk 17 to rotate around the first-stage fixed rod 111 according to the second target step length. The horizontal drive motor control line 20 connects the horizontal drive motor 19 and the controller to provide power and signal control.

[0047] Control box 21, the control box includes: a power supply compartment, a spectrometer compartment, a controller compartment and a cable compartment; the control box is connected to the secondary fixing rod;

[0048] The controller is used to control the horizontal drive motor 19 and the vertical drive motor 12 of the horizontal disk to operate according to the first target step size and the second target step size, respectively; and to control the spectrometer to collect spectra.

[0049] In this embodiment of the invention, the ground measurement integration device is responsible for equipment support, connection and measurement execution. It is divided into two detachable sections: the first-level fixed pole and its upper components constitute one section, and the second-level fixed pole and its upper components constitute the other section. The two sections are stored separately after disassembly. The components on the pole can be further disassembled, but except for maintenance and repair, they can be directly packed without disassembly.

[0050] The fixed pole consists of a primary fixed pole (1.5m) and a secondary fixed pole (1.6m). The vertical drive motor, horizontal (scale) dial, fiber optic arm assembly, and horizontal drive motor for the horizontal dial are mounted on the primary fixed pole. Below the primary fixed pole is the secondary fixed pole. This primary fixed pole can be inserted into the secondary fixed pole, and the two poles are secured together by a pin. This two-pole design reduces the pole length and improves portability. The secondary fixed pole can support an observation height of up to 3.0m (or a longer pole can be used to increase the observation height). During operation, once the primary fixed pole is adjusted to its posture and position, it will not move, rotate, or extend / retract.

[0051] The vertical drive motor is a lightweight micro motor connected to the primary fixed rod. It moves up and down along the primary fixed rod in specific steps via a threaded connection. Limiters at the installation position control its travel. The vertical angle of the driven fiber optic arm is calculated using the thread pitch and the length of the connecting rod, thus obtaining its zenith angle. This travel is related to the length of the fiber optic arm connecting rod (wire), controlling the zenith angle range of the fiber optic probe. Limited by the connection method with the connecting rod (wire) and the movement range of the drive motor on the vertical rod, the adjustable range of the fiber optic arm's vertical angle is 15°-90° (zenith angle).

[0052] The power supply and control lines of the vertical drive motor share a single line (i.e., the vertical motor control line), which is installed inside the fixed pole. One end is connected to the vertical drive motor, and the other end goes into the control box and connects to the controller. The controller is connected to the power supply separately to provide power and signal control.

[0053] The connecting rod (line) is connected to the fiber optic arm via a movable bolt, allowing the connecting rod (line) to rotate freely around the bolt. The connection method between the connecting rod and the vertical drive motor is the same as that of the fiber optic arm. When the vertical drive motor moves up and down along the primary fixed rod, it causes the connecting rod (line) to shift, changing the angle between the fiber optic arm and the horizontal plate, thereby adjusting the fiber optic fixed probe to the set observation angle (zenith angle).

[0054] To increase the angle adjustment range of the fiber optic arm, the connecting rod can be made of a flexible material. In this case, the connecting rod becomes a connecting wire, which is connected to the fiber optic arm using a snap-fit ​​method. When using a connecting wire, the vertical drive motor does not need to move along the fixed rod. Instead, the motor drives the winder, and by shortening the length of the connecting wire, it drives the fiber optic arm to rotate around the sleeve.

[0055] The fiber optic arm assembly consists of a fiber optic arm and a fixed fiber optic probe (including a drive motor). The fixed fiber optic probe is threaded or clipped onto the top of the fiber optic arm, and the spectrometer fiber optic cable is mounted on the side of the fiber optic arm via the clips. During observation, the fiber optic cable and the fixed fiber optic probe are fixedly installed, with the optical probe perpendicular to the fixed probe surface.

[0056] The optical fiber is for the spectrometer and is mounted on the fiber optic arm assembly and mounting rod. One end connects to the fixed probe, and the other end enters the control box and connects to the spectrometer. Considering that the optical fiber is not easily disassembled and installed frequently, the connection between the optical fiber and the spectrometer is not disassembled unless for maintenance or replacement of the optical fiber. After the work is completed, only one end of the fiber optic arm connection is disconnected, and the optical fiber is coiled up and stored together with the spectrometer.

[0057] An angle adjustment device is used in the fixed optical fiber probe to adjust the observation angle of the optical fiber probe.

[0058] The leveling disc is vertically connected to the primary fixed rod via a damper, and can rotate around the rod in designed steps (gear tooth pitch) driven by a motor. The azimuth pointer is rigidly connected vertically to the primary fixed rod and is placed against the leveling disc (but they do not interfere with each other). During operation, after the device is leveled (when the level bubble is centered), the 0° line of the leveling disc is set to point due north.

[0059] The horizontal drive motor of the horizontal disc is rigidly connected to the primary fixed rod via a damper assembly (gear) and vertically. A micro motor drives the horizontal disc to rotate around the primary fixed rod in designed steps. The rotation angle of the horizontal disc is calculated using the gear tooth pitch relationship, thereby achieving adjustment of the observation azimuth angle. The adjustable range of the horizontal disc angle is 0-360°, and it automatically resets after reaching 360 degrees.

[0060] The horizontal disc motor control line (including the horizontal disc drive motor power supply and control line) is installed on the fixed rod by a clip. One end is connected to the motor, and the other end enters the control box and connects to the controller. The controller is connected to the power supply separately to provide power and signal control.

[0061] The control box consists of a power bank (battery) compartment, a spectrometer compartment, a controller compartment, and a cable compartment. During assembly, it is placed at equal angles on a counterweight tray and secured with latches. The controller connects to the power supply to provide power to various motors and miniature cameras, connects to the spectrometer to provide trigger signals, and connects to the control computer to send and receive control signals. When the spectrometer has its own built-in computer (such as the RS8800), a separate control computer is not required; the spectrometer's computer directly controls the system's operation.

[0062] The core component of the controller is a programmable board that receives control information from the computer and connects to the horizontal drive motor, vertical drive motor, spectrometer, and power supply. It controls the fixed-step operation of the horizontal and vertical drive motors and the spectral acquisition by the spectrometer. The controller receives control signals and sends start signals to both the horizontal and vertical drive motors.

[0063] The rapid acquisition device for BRDF spectral data in the field provided by this invention, through the pin-fixed design of the primary and secondary fixed rods, and the function of the vertical drive motor driving the fiber optic arm assembly to move up and down along the primary fixed rod, can achieve flexible height adjustment to adapt to different field environments and measurement needs; both the vertical drive motor and the horizontal drive motor of the horizontal disk are precisely controlled by the controller and can operate according to the preset first target step size and second target step size. This precise control capability ensures the accuracy and consistency of spectral data acquisition, improving the reliability of measurement results. The design of the fiber optic arm assembly allows the fixed fiber optic probe to be stably and flexibly pointed at the target area, thereby effectively collecting spectral data. The connection between the fiber optic cable and the spectrometer ensures real-time data transmission and processing, improving data acquisition efficiency. The control box integrates a mobile power supply compartment, spectrometer compartment, controller compartment, and cable compartment, making the entire device more compact and portable, facilitating rapid deployment and mobile measurement in the field. Thus, the field BRDF spectral data rapid acquisition device, with its high flexibility and adjustability, precise measurement and control, efficient data acquisition capability, portability and durability, and ease of operation and maintenance, provides technical support for the rapid and automatic acquisition of field spectral data.

[0064] The rapid acquisition device for BRDF spectral data in the field provided by the present invention includes an optical fiber arm comprising:

[0065] The first stage and the second stage are connected. The first stage is equipped with a stepping rail and can be retracted into the second stage.

[0066] In this embodiment of the invention, the lower end of the second-stage rod of the fiber optic arm is connected to the first-stage fixed rod via a sleeve without damping, facilitating the rotation of the fiber optic arm around the first-stage fixed rod. The connection method between the fiber optic arm and the sleeve is the same as that of the connecting rod. After connection, the fiber optic arm can move in the vertical plane, but in the horizontal plane, it can only move together with the sleeve. Combined with the device design, the fiber optic arm can only move within a limited range in the vertical plane under the drive of a vertical motor, rotating around the first-stage fixed rod.

[0067] The fiber optic arm adopts a two-stage mode, with the fiber optic fixed probe installed on the first-stage rod (the outermost extension rod).

[0068] In this embodiment of the invention, the lower end of the second-stage rod of the fiber optic arm is connected to the first-stage fixed rod via an undamped sleeve, allowing the fiber optic arm to rotate around the first-stage fixed rod. This rotational freedom facilitates fine-tuning of the fiber optic arm's orientation during spectral data acquisition, ensuring accurate alignment with the target area and improving the accuracy and efficiency of data acquisition.

[0069] The rapid acquisition device for BRDF spectral data in the field provided by the present invention further includes:

[0070] The fiber optic fixed probe drive motor is used to drive the fiber optic fixed probe to move on the first-stage rod according to the third target step length limit.

[0071] In this embodiment of the invention, the fiber optic fixed probe is also equipped with a drive motor. A positioning slide rail is provided on the first-stage rod of the fiber optic arm. Driven by the drive motor, the fiber optic fixed probe can move within a specific step length limit on the slide rail, thereby realizing data measurement at different points in the radial (fiber optic arm) direction within the hemispherical space.

[0072] The fiber optic arm employs a two-stage design. The fixed fiber optic probe is mounted on the first-stage pole (the outermost extension pole), which is equipped with a stepping rail. The fixed fiber optic probe drive motor moves the probe along the arm via this rail. The first-stage pole can be retracted into the second-stage pole for easy carrying. The first-stage pole is 1m long, and the second-stage pole is 1.1m long, with a maximum combined length of 2m (limited by the fiber optic length).

[0073] During installation, the projection of the fiber optic arm on the horizontal plane should coincide with the 0° line of the horizontal scale. When the horizontal drive motor is reset, it should be checked that the projection of the fiber optic arm on the horizontal plane coincides with the 0° line of the horizontal scale.

[0074] Through the embodiments of the present invention, the introduction of the fiber optic fixed probe drive motor enables the fiber optic fixed probe to move in a limited manner on the positioning slide rail on the first stage rod according to the preset third target step length, ensuring that the fiber optic fixed probe can accurately reach different points in the radial direction (i.e. the extension direction of the fiber arm) within the hemispherical space, thereby realizing the accurate acquisition of spectral data of these points.

[0075] Through automated control of the drive motor, the fixed fiber optic probe can move and collect data quickly and continuously between different locations, greatly improving data acquisition efficiency. Compared to manually adjusting the position of the fixed fiber optic probe, this automated method not only saves time but also reduces errors caused by human operation.

[0076] The rapid acquisition device for field BRDF spectral data provided by the present invention further includes, as well as, the ground measurement integration device:

[0077] The fixed base includes: a counterweight tray, a fixed plate assembly, a fixed bracket, and a level adjustment knob assembly;

[0078] The counterweight tray is equipped with a control box, and the counterweight tray is rigidly and vertically connected to the fixed plate assembly; the fixed bracket is connected to the fixed plate assembly by a folding rod; the horizontal adjustment knob assembly is connected to the bottom of the fixed plate assembly by a thread, which is used to adjust the height of the fixed plate assembly at different positions.

[0079] The fixed base consists of a counterweight tray, a fixed plate assembly (rod, plate), fixed supports (3 pieces), and a leveling knob assembly (3 pieces). The counterweight tray is rigidly and vertically connected to the fixed plate assembly (rod); the fixed supports are connected by folding rods, which can be opened into an equilateral triangular pyramid shape to insert and fix the vertical rod when in use, and can be folded for storage when not in use; the leveling knob assembly is threadedly connected to the bottom of the fixed plate assembly (plate), and the height of the fixed plate assembly is adjusted by turning the knob thread to adjust the level of the entire device, so that the level bubble on the level plate is centered.

[0080] Through the embodiments of this invention, the rigid vertical connection design of the counterweight tray and the fixed plate assembly, along with the control box mounted on the counterweight tray, provides stable support for the entire device. The presence of the counterweight effectively prevents the device from swaying or tipping over due to wind, human contact, or other factors in complex terrain, ensuring the stability and accuracy of data acquisition. The fixed bracket and the fixed plate assembly are connected by a folding rod, allowing the device to be folded up when not in use, greatly reducing its size and facilitating carrying and transportation.

[0081] The rapid acquisition device for field BRDF spectral data provided by the present invention further includes, as well as, the ground measurement integration device:

[0082] The field-of-view image acquisition unit and the video acquisition control line are installed inside the fiber optic fixed probe. The field-of-view image acquisition unit is used for image acquisition. The video acquisition control line connects the field-of-view image acquisition unit and the controller to provide power and signal control.

[0083] In this embodiment of the invention, the field-of-view image acquisition device is installed inside the fiber optic fixed probe, enabling simultaneous acquisition of spectral data and image data of the target area. This simultaneous acquisition method facilitates subsequent data analysis and comparison, as spectral data and image data can be directly correlated, resulting in more accurate and comprehensive analysis.

[0084] Simultaneous acquisition of imagery and spectral data reduces the time and manpower costs required for separate acquisition of the two types of data. Furthermore, because the two types of data are acquired at the same time and location, their correlation is stronger, avoiding data mismatch issues caused by temporal or spatial differences.

[0085] One end of the video acquisition control cable is connected to the camera, and the other end is connected to the control box, which in turn connects to the power supply and controller.

[0086] Through the embodiments of the present invention, image data provides intuitive visual information about the target area, such as topography, vegetation type, soil moisture, etc.; by combining image data and spectral data, users can gain a deeper understanding of the characteristics and attributes of the target area, and improve the accuracy and depth of data interpretation.

[0087] According to the present invention, a rapid field BRDF spectral data acquisition device and a field-of-view image acquisition device include:

[0088] A miniature camera, wherein the miniature camera is used to capture images and store them in a preset format when a trigger signal is received.

[0089] This invention employs a signal-triggered miniature camera that captures and stores images upon receiving a trigger signal, using the generation time as a keyword to correspond with the spectrum and log file. The camera body is mounted on the fiber optic fixed probe via quick-release or snap-fit, with the installation direction and method identical to that of the fiber optic cable.

[0090] The lens angle of the image acquisition device can be adjusted synchronously with the optical fiber at the fixed probe location.

[0091] Through this embodiment of the invention, a miniature camera is designed to immediately begin acquiring images upon receiving a trigger signal. This instantaneous response capability ensures a high degree of temporal synchronization between image data and spectral data, avoiding data mismatch problems caused by delays.

[0092] According to the rapid acquisition device for BRDF spectral data in the field provided by the present invention, the controller is connected to the horizontal disk motor control line, the vertical motor control line, the video acquisition control line, and the spectrometer signal line.

[0093] refer to Figure 2 , Figure 2 This is a schematic diagram of the controller connection provided by the present invention.

[0094] The core component of the controller is a programmable board that receives control information from the computer and connects to the control lines for the horizontal and vertical motors, the video acquisition control line, and the spectrometer signal line. It controls the fixed-step operation of the horizontal and vertical drive motors of the horizontal disk and the spectral acquisition by the spectrometer. The controller receives control signals and sends start signals to both the horizontal and vertical drive motors. After moving the horizontal disk and fiber optic arm to the designed position according to the step distance (run), it sends a stop signal to the motors and sends an acquisition signal to the spectrometer. The log file synchronously records the command content, command time, execution feedback, data file type, file name, and storage path for each step.

[0095] In this embodiment of the invention, the controller, acting as the central hub of the entire acquisition device, connects multiple control lines to achieve centralized control of the horizontal disc motor, vertical motor, field-of-view image acquisition unit, and spectrometer. This highly integrated design makes the acquisition process more automated and intelligent, reducing the complexity and errors of manual operation.

[0096] According to the rapid acquisition device for BRDF spectral data in the field provided by the present invention, the controller is also connected to a control signal line and a power line. The control signal line is used to transmit control signals, and the power line is used to supply power to the controller.

[0097] In this embodiment of the invention, the introduction of the control signal line enables the controller to receive control signals from external or internal components and issue corresponding instructions based on these signals; the power line provides a stable power supply to the controller, ensuring that the controller can work continuously and stably.

[0098] Through the embodiments of the present invention, the presence of control signal lines and power lines makes the maintenance and management of the data acquisition device more convenient. When it is necessary to adjust the acquisition parameters, check the system status, or troubleshoot, technicians can operate through the control signal lines and ensure that the system is in normal working condition through the power lines.

[0099] According to the rapid acquisition device for BRDF spectral data in the field provided by the present invention, the leveling disk includes: a 360-degree angle scale and a level bubble, the level bubble being used to adjust the leveling state of the leveling disk.

[0100] In this embodiment of the invention, the level dial has 360-degree angle markings and a fixed level bubble is mounted thereon to adjust the level of the level dial. The level dial is vertically connected to the primary fixed rod via a damper and can rotate around the rod in designed steps (gear tooth pitch) driven by a motor. The azimuth pointer is rigidly connected vertically to the primary fixed rod and is mounted against the level dial (but they do not interfere with each other). During operation, after the device is leveled (when the level bubble is centered), the 0° line of the level dial is set to point due north.

[0101] In this embodiment of the invention, the leveling disc has 360-degree angle markings. Combined with a fixedly placed bubble level, users can intuitively adjust the leveling disc to a horizontal position. When the bubble level is centered, it indicates that the leveling disc has been leveled, ensuring the stability of the data acquisition device on a horizontal plane.

[0102] The following describes an example of the rapid acquisition device for BRDF spectral data in the field provided by this invention in a practical application.

[0103] refer to Figure 3 , Figure 3 This is a schematic diagram of the overall structure of the rapid acquisition device for BRDF spectral data in the field provided by the present invention.

[0104] The rapid acquisition device for BRDF spectral data in the field includes a ground measurement integration device and a controller.

[0105] The ground measurement integrated device is one of the core components of this invention, responsible for equipment support, connection, and measurement execution. It consists of two detachable sections: one section comprises a primary fixed rod and its upper components, and the other section comprises a secondary fixed rod and its upper components. The two sections can be stored separately after disassembly. The components on the rods can be further disassembled, but except for maintenance and repair, they can be directly packed without disassembly. The device (see attached diagram) consists of the following components from top to bottom:

[0106] Fixed Pole: This component includes a primary fixed vertical pole (1.5m), on which a vertical drive motor, a horizontal (gradient) dial, a fiber optic arm, and a horizontal drive motor are mounted. Below this is a secondary fixed pole (1.6m). The primary fixed pole can be inserted into the secondary fixed pole, and the two poles are secured together by a pin. This two-pole design reduces the pole length and improves portability. The two poles can support an observation height of up to 3.0m (or a longer pole can be used to increase the observation height). During operation, once the primary fixed pole is adjusted to its attitude and position, it will not move, rotate, or extend / retract.

[0107] Vertical drive motor and its power control line: A lightweight micro motor connected to a primary fixed rod. It moves up and down along the fixed rod in specific steps via a threaded connection. Limiters at the installation position control its travel. The vertical angle of the driven fiber optic arm is calculated using the thread pitch and the length of the connecting rod, thus obtaining its zenith angle. This travel is related to the length of the fiber optic arm connecting rod (line), controlling the zenith angle range of the fiber optic probe. Limited by the connection method with the connecting rod (line) and the movement range of the drive motor on the vertical rod, the adjustable range of the fiber optic arm's vertical angle is 15°-90° (zenith angle).

[0108] The power supply and control lines of the vertical drive motor share a single cable, which is installed outside the fixed pole. One end is connected to the motor, and the other end goes into the control box and connects to the controller. The controller is connected to the power supply separately to provide power and signal control.

[0109] Connecting rod (line): Connected to the fiber optic arm via a movable bolt, the connecting rod (line) can rotate freely around the movable bolt. The connection method between the connecting rod and the vertical motor is the same as the connection method between the fiber optic arm and the connecting rod. When the vertical drive motor moves up and down along the first-stage fixed rod, it causes the connecting rod (line) to shift, changing the angle between the fiber optic arm and the horizontal plate, thereby adjusting the fiber optic probe to the set observation angle (zenith angle). To increase the angle adjustment range of the fiber optic arm, the connecting rod can be made of a flexible material, in which case the connecting rod becomes a connecting line, connected to the fiber optic arm using a snap-fit ​​method. When using a connecting line, the vertical motor does not need to move along the fixed rod; instead, the motor drives the winding device, and by shortening the length of the connecting line, it drives the fiber optic arm to rotate around the sleeve.

[0110] Fiber optic arm assembly: Composed of a fiber optic arm and a fixed fiber optic probe (including a drive motor). The fixed probe is threaded or snapped onto the top of the fiber optic arm, and the spectrometer fiber optic cable is mounted on the side of the fiber optic arm via a snap-fit. During observation, the fiber optic cable and the fixed probe are fixedly installed, with the optical probe perpendicular to the fixed probe surface. The lower end of the second-stage rod of the fiber optic arm is connected to the first-stage fixed rod via a sleeve, without damping, facilitating rotation of the fiber optic arm around the fixed rod. The connection between the fiber optic arm and the sleeve is the same as that of the connecting rod. After connection, the fiber optic arm can move in the vertical plane, but in the horizontal plane, it can only move with the sleeve. Combined with the device design, this means the fiber optic arm can only move within a limited vertical plane under the drive of the vertical motor, rotating around the first-stage fixed rod.

[0111] The fiber optic fixed probe is also equipped with a drive motor. A positioning slide rail is set on the fiber optic arm, and the fiber optic fixed probe can move in a specific step length limit on it under the drive motor, so as to realize data measurement at different points in the radial direction (fiber optic arm) within the hemispherical space.

[0112] The fiber optic arm employs a two-stage design. The fixed fiber optic probe is mounted on the first-stage pole (the outermost extension pole), which is equipped with a stepper rail. A drive motor moves the fixed probe along the arm via this rail. The first-stage pole can be retracted into the second-stage pole for easy portability. The first-stage pole is 1m long, and the second-stage pole is 1.1m long, with a maximum combined length of 2m (limited by the fiber optic length).

[0113] During installation, the projection of the fiber optic arm on the horizontal plane should coincide with the 0° line of the horizontal scale. When the horizontal drive motor is reset, it should be checked that the projection of the fiber optic arm on the horizontal plane coincides with the 0° line of the horizontal scale.

[0114] The optical fiber, specifically the spectrometer's optical fiber, is mounted on the fiber optic arm assembly and mounting rod. One end connects to the fixed optical fiber probe, while the other end enters the control box and connects to the spectrometer. Considering that the optical fiber is not easily disassembled and reassembled frequently, the connection between the optical fiber and the spectrometer is not disassembled unless for maintenance or fiber replacement. After work is completed, only one end of the fiber optic arm connection is disconnected, and the optical fiber is coiled and stored together with the spectrometer.

[0115] Field-of-view image acquisition device and its power control line: This invention uses a signal-triggered miniature camera that acquires and stores images upon receiving a trigger signal, with the generation time used as a keyword to correspond to the spectrum and log file. The device body is mounted on the fiber optic fixed probe via quick-release or clip-on installation, with the installation direction and method identical to the fiber optic cable. One end of the control line connects to the camera, and the other end connects to the control box, power supply, and controller.

[0116] The lens angle of the image acquisition device can be adjusted synchronously with the optical fiber at the fixed probe location.

[0117] The horizontal (scaled) disc consists of a 10cm horizontal disc (not exceeding the maximum outer diameter of the first-stage rod after the vertical drive motor is installed), an azimuth pointer (not exceeding the limit of the horizontal disc), and a level bubble. The horizontal disc has 360-degree angle graduations and a fixed level bubble is installed to adjust its levelness. The horizontal disc is vertically connected to the first-stage fixed rod via a damper and can rotate around the rod in designed steps (gear pitch) driven by a motor. The azimuth pointer is rigidly connected vertically to the first-stage fixed rod and is placed against the horizontal disc (but they do not interfere with each other). During operation, after the device is leveled (with the level bubble centered), the 0° line of the horizontal disc is set to point due north.

[0118] The horizontal drive motor and its power control line for the horizontal disc are connected to the primary fixed rod via a damper assembly (gear) and are rigidly vertically connected to the horizontal disc. A micro motor drives the horizontal disc to rotate around the primary fixed rod in designed steps. The rotation angle of the horizontal disc is calculated using the gear tooth pitch relationship, thereby achieving adjustment of the observation azimuth angle. The adjustable range of the horizontal disc angle is 0-360°, and it automatically resets after reaching 360 degrees.

[0119] The power supply and control cable of the horizontal disc drive motor are mounted on the fixed rod by clips. One end is connected to the motor, and the other end goes into the control box and connects to the controller. The controller is connected to the power supply separately to provide power and signal control.

[0120] The control box consists of three parts: a power bank (battery) compartment, a spectrometer compartment, and a controller and cable compartment. During assembly, they are placed at equal angles on the counterweight tray and secured with latches. The controller connects to the power supply to provide power to the motor and miniature camera, connects to the spectrometer to provide trigger signals, and connects to the control computer to send and receive control signals. When the spectrometer has its own built-in computer (such as the RS8800), a separate control computer is not required; the spectrometer's computer directly controls the system's operation.

[0121] The fixed base consists of a counterweight tray, a fixed plate assembly (rod, plate), fixed supports (3 pieces), and a leveling knob assembly (3 pieces). The counterweight tray is rigidly and vertically connected to the fixed plate assembly (rod); the fixed supports are connected by folding rods, which can be opened into an equilateral triangular pyramid shape to insert and fix the vertical rod when in use, and can be folded for storage when not in use; the leveling knob assembly is threadedly connected to the bottom of the fixed plate assembly (plate), and the height of the fixed plate assembly is adjusted by turning the knob thread to adjust the level of the entire device, so that the level bubble on the level plate is centered.

[0122] To minimize the impact on the measured spectrum, all devices are predominantly painted black to reduce the contamination of the collected spectrum by reflected light.

[0123] The core component of the controller is a programmable board that receives control information from the computer and connects to various drive motors, spectrometers, and power supplies. It controls the step-length operation of the horizontal and vertical drive motors and the spectral acquisition by the spectrometer. The controller receives control signals and sends start signals to both the horizontal and vertical drive motors. After moving the horizontal disk and fiber optic arm to the designed position according to the step distance (run), it sends a stop signal to the motors and sends an acquisition signal to the spectrometer. The log file synchronously records the command content, command time, execution feedback, data file type, file name, and storage path for each step.

[0124] BRDF measurements are performed within a hemispherical space, measuring the spectra of ground objects at different azimuth angles while maintaining the same fiber optic zenith angle. The zenith angle is then adjusted before measuring the spectra at different azimuth angles in the next round. Alternatively, the azimuth angle can be kept constant while varying the zenith angle.

[0125] The controller receives instructions from the control computer and begins checking if the horizontal and vertical motors have reset (from the preset angle starting position). Once this is complete, it begins measuring the reference board. After the measurement is finished, it immediately instructs the horizontal and vertical motors to move the fiber optic arm to the designated position, initiating spectral measurement and fiber optic field-of-view acquisition. Based on control signals, it also instructs the horizontal and vertical motors to adjust the position of the fiber optic arm and performs data acquisition. After all position measurements are completed according to the control signal instructions, the horizontal and vertical motors move the fiber optic arm to reset, and the reference board is measured again, concluding this measurement cycle.

[0126] refer to Figure 4 , Figure 4 This is a flowchart illustrating a spectral measurement control process provided by the present invention, which includes reference plate measurement, horizontal disk drive motor, determining whether the design step size has been reached, outputting a Log file, vertical drive motor, determining whether the design step size has been reached, outputting a Log file, spectral measurement, outputting a Log file, field of view acquisition, outputting a Log file, reference plate measurement; and the controller receiving feedback signals, horizontal disk, vertical drive motor, motor reset, etc.

[0127] In some embodiments, a log file is a record of a process performed by the system or certain software for future reference. It doesn't have a fixed format; it's usually a text file that can be opened with Notepad to view its contents. However, it could be in other formats, in which case opening it directly would result in gibberish. The purpose of most log files can be understood from their filenames, such as uninstall.log or error.log. The former is usually a record generated during software installation, provided to the uninstaller for future use, while the latter is typically used to record error information during software operation.

[0128] A ground object spectrometer is also required for the device's operation. Considering ease of control and secondary development, this invention employs the RS8800 ground object spectrometer. This device boasts high maturity and integration. It integrates a microcomputer and can be remotely controlled via Wi-Fi, Bluetooth, and other communication methods using mobile phones, tablets, and computers with Wi-Fi and Bluetooth capabilities. Furthermore, its spectral acquisition provides signal-triggered control, facilitating secondary development and control.

[0129] It should be noted that other brands of spectrometers with similar functions can also serve as alternatives to the RS8800 device. The spectrometer is merely a necessary component for measurement and is not an integral part of this invention.

[0130] The following describes the installation process of the field BRDF spectral data rapid acquisition device provided by the present invention in practical applications.

[0131] The rapid BRDF spectral data acquisition device for the field consists of two sections: the first section (upper section) is centered around a primary fixed rod, on which a vertical drive motor, fiber optic arm, connecting rod (cable), horizontal disc drive motor, and horizontal disc (including its components) are mounted via quick-release and snap-fit ​​components. The second section (lower section) is centered around a secondary fixed rod, on which a counterweight disc, control box, and fixed base are fixed via snap-fit ​​components. The fixed base is detachable, and the mounting bracket can be folded directly onto the rod. After removing the power control cable, the two sections can be separated and placed separately into transport cases.

[0132] When using, first refer to the tripod installation method to place the lower section. After fixing the bracket, insert the first-level fixing rod into the second-level fixing rod and lock it with the pin. At the same time, adjust the placement direction so that the 0° line of the level dial is aligned with due north, and level it so that the level bubble is centered.

[0133] The spectrometer, power supply, controller, etc. are placed on the counterweight plate. In case of instability, other counterweights can be placed on the counterweight plate or fixed with steel cables.

[0134] Power control cable for connecting to devices such as computers (wireless connection possible), motors, spectrometers, and cameras.

[0135] Check for any missing parts, whether the fiber optic arm extends or retracts properly, and whether the motor position is reset.

[0136] Check the leveling of the device. Use the leveling knob to center the bubble on the level pan and align the 0° line with due north. The device is now in place.

[0137] Check the connection between the computer and the controller, and check the working status of the motor and spectrometer. Enter measurement mode.

[0138] The following describes the BRDF measurement process of the field BRDF spectral data rapid acquisition device provided by the present invention in practical application.

[0139] refer to Figure 5 , Figure 5 This is a schematic diagram of hemispherical space measurement projection provided by the present invention. The projection of the upper hemisphere of the space sphere onto the horizontal plane has the central dot as the zenith, where the zenith angle is 0 degrees (the pitch angle is 90 degrees). Different rings represent the zenith angles of observers at different positions on the circumference.

[0140] To ensure the diversity of sampling data, a round of BRDF measurements was conducted every 10° of solar zenith angle. For each round of the experiment, the observation azimuth range was 0-360°, with 30° intervals, totaling 6 azimuth planes. The observation zenith angle range was 0-70°, with 11 measurement positions per azimuth plane. Nine of these positions were between 0-60° with 15° intervals, and the remaining two were at an observation zenith angle of 70°. Therefore, spectral sampling of the target surface was required at 66 measurement positions across the entire hemispherical space. Before and after each round of BRDF measurements, the standard plate underwent two vertical samplings.

[0141] Since the zenith angle measurement range of this device is 15-90°, the 0° zenith angle can be quickly measured by manually adjusting the fiber optic probe to 0° (facing the ground).

[0142] Write control commands (programs): Based on the above design and the process in the controller, write measurement control commands.

[0143] The control command is uploaded to the controller to start the measurement process.

[0144] BRDF measurement results (including automatically recorded data) include: device location latitude and longitude, measurement start and end times; reference plate reflectance, measurement time, azimuth, and zenith angle; ground feature reflectance, measurement time, azimuth, and zenith angle. Using the device location and measurement time, the solar zenith angle and azimuth angle at that measurement time on that day can be calculated or retrieved. Measurement data is recorded in a log file. The log file does not contain spectral or image data, but it does contain information such as the filenames of the corresponding data.

[0145] In this embodiment of the invention, only the 0-degree azimuth angle needs to be determined; all other angle adjustments are automatically calculated by the drive motor using gears and thread values. During the measurement process, after the measurement instructions are edited on the computer, no manual intervention is required. The controller (programmable board) drives the motor, spectrometer, and camera sequentially according to the commands to complete all data acquisition and data regularization recording. This device can also measure the target spectrum in the radial (fiber arm) direction within a hemispherical space by moving the fiber optic probe. It differs significantly from this invention in terms of device composition, measurement method, and measurement content.

[0146] The program control uses a drive motor to quickly send the detector (spectrometer probe) to the designed position, which can greatly reduce the process time and thus reduce the measurement time. This allows the system to simulate the effects of changes in illumination and atmospheric conditions, as well as small variations in solar zenith angle and azimuth angle, within a single measurement cycle, as closely as possible the results of BRDF at different azimuths under the condition that the solar position remains unchanged.

[0147] The rapid BRDF spectral data acquisition device provided by this invention is lightweight, portable, easy to operate, and has a short measurement time, with a wide range of applications. The main core components are made of carbon steel, which is high-strength, lightweight, durable, and easy to carry and move. The components are telescopic, allowing for adjustment to suit different measurement ranges. The device is driven by a motor with high precision, effectively meeting the angle requirements during measurement. The device measures quickly; due to the lightweight components and fast motor rotation, spatial movement can be completed rapidly, significantly reducing preparation time. It is also equipped with a simultaneous measurement field-of-view image acquisition system to obtain target image data, facilitating the understanding of the target's true composition and spatial structure by the experimenter. Measurements can be performed via computer programming, designing measurement instruction blocks. Once edited, no manual intervention is required, automatically completing all measurements, recording data, and storing it systematically. This high degree of automation and ease of operation makes the device highly automated.

[0148] The rapid acquisition device for BRDF spectral data in the field provided by this invention abandons the circular track measurement scheme, which is convenient and has fewer measurement limitations. It has a high degree of automation, with computer programming and automatic measurement, requiring minimal manual intervention. Motor-driven, it provides rapid positioning, reducing the time spent on probe spatial movement and avoiding the impact of changes in weather conditions caused by long measurement times.

[0149] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0150] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0151] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid acquisition device for BRDF spectral data in the field, characterized in that, Includes ground measurement integration devices and controllers; The ground measurement integrated device includes: A fixing rod, comprising a primary fixing rod and a secondary fixing rod; the primary fixing rod can be inserted into the secondary fixing rod, and the primary fixing rod and the secondary fixing rod are fixed by a pin. A vertical drive motor and a vertical motor control line are provided. The vertical drive motor is connected to the first-stage fixed rod and moves up and down along the first-stage fixed rod with a first target step length via a thread. The vertical motor control line connects the vertical drive motor and the controller to provide power and signal control. A fiber optic arm assembly, comprising: a fiber optic arm and a fiber optic fixed probe; the bottom end of the fiber optic arm is connected to the primary fixing rod via a sleeve, and the fiber optic fixed probe is fitted onto the top end of the fiber optic arm via threads or snaps; A connecting rod, the two ends of which are respectively connected to the vertical drive motor and the fiber optic arm via movable bolts; An optical fiber is installed within the fixed rod and the optical fiber arm assembly. The first end of the optical fiber is connected to the optical fiber fixed probe, and the second end of the optical fiber is connected to the spectrometer within the controller. A horizontal disc and an azimuth pointer are provided. The horizontal disc is vertically connected to the primary fixed rod via a damper. The azimuth pointer is rigidly connected to the primary fixed rod and is mounted against the horizontal disc. A horizontal drive motor for a horizontal disk and a control line for the horizontal disk motor are provided. The horizontal drive motor for the horizontal disk is mounted on the first-stage fixed rod through a damper and is rigidly connected to the horizontal disk vertically. The horizontal drive motor for the horizontal disk is used to drive the horizontal disk to rotate around the first-stage fixed rod according to a second target step length. The control line for the horizontal drive motor for the horizontal disk is connected to the controller to provide power and signal control. The control box includes: a power supply compartment, a spectrometer compartment, a controller compartment, and a cable compartment; the control box is connected to the secondary fixing rod. The controller is used to control the horizontal drive motor of the horizontal disk and the vertical drive motor to operate according to the first target step size and the second target step size, respectively; and to control the spectrometer to perform spectral acquisition. The ground measurement integrated device also includes: A field-of-view image acquisition device and a video acquisition control line are provided. The field-of-view image acquisition device is installed inside the fiber optic fixed probe and is used for image acquisition. The video acquisition control line connects the field-of-view image acquisition device and the controller to provide power and signal control. The field-of-view image acquisition device simultaneously acquires image data of the target area while the spectrometer is acquiring spectra.

2. The rapid acquisition device for BRDF spectral data in the field according to claim 1, characterized in that, The fiber optic arm includes: The first stage and the second stage are a first stage rod, on which a stepping rail is installed, and the first stage rod can be retracted into the second stage rod.

3. The rapid acquisition device for BRDF spectral data in the field according to claim 2, characterized in that, The fiber optic arm assembly also includes: A fiber optic fixed probe drive motor is used to drive the fiber optic fixed probe to move on the first-stage rod according to the third target step length limit.

4. The rapid acquisition device for BRDF spectral data in the field according to claim 1, characterized in that, The ground measurement integrated device also includes: A fixed base, wherein the fixed base includes: a counterweight tray, a fixed plate assembly, a fixed bracket, and a horizontal adjustment knob assembly; The control box is mounted on the counterweight tray, and the counterweight tray is rigidly and vertically connected to the fixed plate assembly; the fixed bracket is connected to the fixed plate assembly via a folding rod; the horizontal adjustment knob assembly is threadedly connected to the bottom of the fixed plate assembly, and is used to adjust the height of the fixed plate assembly at different positions.

5. The rapid acquisition device for BRDF spectral data in the field according to claim 1, characterized in that, The field-of-view image acquisition device includes: A miniature camera, wherein the miniature camera is used to capture images and store them in a preset format when a trigger signal is received.

6. The rapid acquisition device for BRDF spectral data in the field according to claim 1, characterized in that, The controller is connected to the horizontal disc motor control line, the vertical motor control line, the video acquisition control line, and the spectrometer signal line.

7. The rapid acquisition device for BRDF spectral data in the field according to claim 6, characterized in that, The controller is also connected to a control signal line and a power line. The control signal line is used to transmit control signals, and the power line is used to supply power to the controller.

8. The rapid acquisition device for BRDF spectral data in the field according to claim 1, characterized in that, The leveling disc includes a 360-degree angle scale and a level bubble, the level bubble being used to adjust the leveling state of the leveling disc.

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