Photoelectric compound eye system for wide-area monitoring of geostationary orbit space target

Abstract

The utility model discloses a photoelectric compound eye system for geostationary orbit space target wide-area monitoring, which comprises a plurality of photoelectric devices arranged on a bottom table at intervals, the photoelectric devices are arranged on the bottom table through mounting pieces, the transverse view field of each photoelectric device is tangent to the arc section of a geostationary orbit monitored by the photoelectric device, and the transverse view field of each photoelectric device is perpendicular to the arc section of the geostationary orbit. And after the transverse view fields of the plurality of photoelectric devices are spliced, the view field angle is 120-240 degrees by taking the due north direction as azimuth 0 degree, and the pitch angle is 23-43 degrees by taking the horizontal direction as pitch 0 degree. According to the utility model, field-of-view splicing of multiple photoelectric devices can be realized, and simultaneous and wide-area monitoring of all space targets in a geostationary orbit large arc section covered by a system field-of-view can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace measurement and control. More specifically, the utility model relates to an optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets. Background Art

[0002] A large number of important artificial satellites are deployed in the geostationary orbit, and their spatial distribution range is very wide. Generally, a two-axis turntable carrying a small field-of-view optoelectronic single-eye system is used for scanning and monitoring. This method has the defect of a long scanning period (generally more than an hour level). To shorten the scanning and measurement period, it is usually achieved by increasing the field of view of the optoelectronic single-eye system. Due to the restriction of detection capabilities, the allowable range of increase in the field of view of the single-eye system is limited. Therefore, the shortening of the scanning period is also limited. The utility model patent "A multi-camera staring detection system" with the authorization announcement number CN207304715U discloses a seamless splicing based on the intersection of a large-area array detector and a large field-of-view optical system, including four integrally designed lenses and an N×N area array detector, without mechanical switching. However, the problem is that all detectors are in the same plane and do not involve pitch, which is not suitable for the observation of geostationary orbit arcs. Therefore, what the utility model urgently needs to solve is to provide an optoelectronic compound eye system capable of covering the field-of-view splicing of geostationary orbit arcs. Summary of the Utility Model

[0003] The utility model provides an optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets, which can realize the field-of-view splicing of multiple optoelectronic devices and simultaneously and widely monitor all space targets within a large arc of the geostationary orbit covered by the system's field of view.

[0004] To achieve these and other advantages according to the present utility model, there is provided an optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets, including a plurality of optoelectronic devices installed at intervals on the same base. The optoelectronic devices are installed on the base through the mounting parts. The horizontal field of view of each optoelectronic device is tangent to the arc segment of the geostationary orbit it monitors. After the horizontal fields of view of the plurality of optoelectronic devices are seamlessly spliced, the field-of-view angle is: taking the due north direction as the azimuth 0°, the azimuth angle is 120~240°, and taking the horizontal direction as the pitch 0°, the pitch angle is 23~43°.

[0005] Preferably, the overlap of the horizontal fields of view of two adjacent optoelectronic devices after splicing does not exceed 1%.

[0006] Preferably, the installation platform is formed by splicing a first plate body, a second plate body, a third plate body, and a fourth plate body. The first plate body is a horizontal plate body and is installed on the bottom platform. The second plate body and the fourth plate body are vertical plate bodies and are both right trapezoid structures, and the northward side is shorter than the southward side. The third plate body is an inclined plate body and forms an installation surface for optoelectronic devices. Among them, the horizontal projections of the first plate bodies of several installation platforms are located within the circular arc segment.

[0007] Preferably, the number of optoelectronic devices is an odd number. The inclined waists of the second plate body and the fourth plate body of the installation platform at the center are of equal height, and the southward vertices of the inclined waists of the second plate body and the fourth plate body are higher than the northward vertices. For any installation platform on both sides, the vertical plate body close to the center is the second plate body, and the vertical plate body far from the center is the fourth plate body. The southward vertex of the inclined waist of the second plate body is higher than the southward vertex of the inclined waist of the fourth plate body, and the northward vertex of the inclined waist of the second plate body is higher than the northward vertex of the inclined waist of the fourth plate body. The installation platforms on both sides are symmetrically arranged, and the heights of the southward vertices of the inclined waists of the second plate bodies are equal from the center to both sides. The heights of the northward vertices of the inclined waists of the second plate bodies gradually increase from the center to both sides.

[0008] Preferably, the number of optoelectronic devices is seven, and the field of view angle of each optoelectronic device is 16°×11.7°.

[0009] Preferably, the azimuth angle of the optical axis of the optoelectronic device at the center is 180°, the pitch angle is 43°, and the horizontal field of view is in the horizontal direction. The azimuth angles of the optical axes of the first pair of optoelectronic devices from the center to both sides are 160.3° and 199.7° respectively, and the pitch angles are both 41°. The horizontal fields of view are rotated by angles of -15° and 15° respectively along the optical axis from the horizontal direction. The azimuth angles of the optical axes of the second pair of optoelectronic devices are 142.4° and 217.6° respectively, and the pitch angles are both 35.6°. The horizontal fields of view are rotated by angles of -28° and 28° respectively along the optical axis from the horizontal direction. The azimuth angles of the optical axes of the third pair of optoelectronic devices are 127.6° and 232.4° respectively, and the pitch angles are both 27.7°. The horizontal fields of view are rotated by angles of -36° and 36° respectively along the optical axis from the horizontal direction.

[0010] The utility model has at least the following beneficial effects:

[0011] First, in the utility model, several optoelectronic devices (cameras) are installed on the bottom platform through installation parts, and multiple installation parts are arranged in a certain way so that multiple optoelectronic devices form an array to obtain a field of view for monitoring the arc segment of the geostationary orbit, realizing the field of view splicing of multiple optoelectronic devices, and realizing the simultaneous and wide-area monitoring of all space targets within the large arc segment of the geostationary orbit covered by the system field of view. For the longitude range of the sub-satellite point of the geostationary orbit, it is about E53°~E147°, covering more than 1 / 4 of the entire geostationary orbit.

[0012] Second, the top surface of the bottom platform has a horizontal plane, preferably a circular platform. A number of mounting members are arranged at intervals. The top surface of the mounting member is the installation surface for the optoelectronic device. One optoelectronic device is installed on the installation surface of one mounting member. The optical axis of the optoelectronic device is parallel to the installation surface of the optoelectronic device below it. The angle of the installation surface of the optoelectronic device is set so that the horizontal field of view of the optoelectronic device is tangent to the arc segment of the geostationary orbit it monitors. Specifically, the installation position of the mounting member and the inclination angle of the installation surface of the optoelectronic device enable the optoelectronic device to have a certain azimuth angle, pitch angle, and rotation angle. Adjacent two optoelectronic devices have a certain horizontal field of view overlap. A number of optoelectronic devices form an optoelectronic compound eye system to cover the corresponding arc segment of the geostationary orbit.

[0013] Third, the overlapping amplitude of the horizontal fields of view of adjacent two optoelectronic devices after splicing does not exceed 1%, which can improve the coverage range of the monitoring field of view as much as possible. The installation platform has four plate bodies. The first plate body is the horizontal bottom platform fixing surface. The second and fourth plate bodies are vertical support plates. The third plate body is the inclined installation surface for the optoelectronic device. By setting the heights of the four vertices of the second and fourth plate bodies, the third plate body is inclined at different degrees so that the optoelectronic device has a certain azimuth angle, pitch angle, and rotation angle.

[0014] Fourth, the number of optoelectronic devices is odd. The mounting member at the center is arranged from north to south, and the rotation angle of the optical axis is 0°, that is, the angle of clockwise rotation around the optical axis from the horizontal position is 0°. In order to monitor the arc segment of the geostationary orbit, the inclination of the third plate body is designed so that the optoelectronic device above it has a certain pitch angle, that is, the southward vertex of the inclined waist of the second and fourth plate bodies is higher than the northward vertex. Multiple pairs of mounting members are symmetrically arranged on both sides, and the rotation angles of the optical axes are negative reciprocals of each other. In order to make the horizontal fields of view of multiple pairs of optoelectronic devices match the arc segment of the geostationary orbit they monitor, the inclination of the third plate body is designed so that the optoelectronic device above it has a certain pitch angle. The southward vertex of the inclined waist of the second plate body is higher than the southward vertex of the inclined waist of the fourth plate body, and the northward vertex of the inclined waist of the second plate body is higher than the northward vertex of the inclined waist of the fourth plate body. At the same time, compared with the optoelectronic device at the center, it has a certain azimuth angle, that is, the heights of the southward vertices of the inclined waists of the second plate body are equal from the center to both sides, and the heights of the northward vertices of the inclined waists of the second plate body gradually increase from the center to both sides.

[0015] Fifth, in one example, to monitor geostationary orbit targets at a position around 40° north latitude, optoelectronic devices with a field of view of 16°×11.7° are selected. Seven optoelectronic devices need to be stitched in terms of their fields of view to cover the corresponding geostationary orbit arc segment. Specifically, considering that it is difficult to obtain good observation effects when the pitch angle is less than 20°, the comprehensive field of view only needs to cover above the pitch angle of 20°. In addition, to make the lateral fields of view of multiple pairs of optoelectronic devices match the arc segments of the monitored geostationary orbit, fix the azimuth angle, pitch angle, and rotation angle of the seven optoelectronic devices to achieve fixed-point monitoring, effective monitoring, and high-precision monitoring.

[0016] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a technical solution of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of a technical solution of the present utility model;

[0019] Figure 3 It is a schematic diagram of the dimension design of a technical solution of the present utility model;

[0020] Figure 4 It is a schematic diagram of the azimuth installation of a technical solution of the present utility model;

[0021] Figure 5 It is a schematic diagram of the observation effect of a technical solution of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further elaborates on the present utility model in conjunction with the accompanying drawings, enabling those skilled in the art to implement it with reference to the text of the specification.

[0023] It should be understood that the terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0024] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained through commercial channels. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] As Figure 1 , 2 , as shown in Fig. 4, the present utility model provides an optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets, which includes a plurality of optoelectronic devices (2) installed at intervals on the same base (1). The optoelectronic devices (2) are installed on the base (1) through the mounting parts (3). The lateral field of view of each optoelectronic device (2) is tangent to the arc segment of the geostationary orbit it monitors. After the lateral fields of view of the plurality of optoelectronic devices (2) are seamlessly spliced, the field of view angle is: taking the due north direction as azimuth 0°, the azimuth angle is 120~240°, and taking the horizontal direction as pitch 0°, the pitch angle is 23~43°.

[0026] In the above technical solution, a plurality of optoelectronic devices (2) are installed on the base (1) through the mounting parts (3). The plurality of mounting parts (3) are arranged in a certain way so that the plurality of optoelectronic devices (2) form an array to obtain a field of view that can monitor the arc segment of the geostationary orbit, realizing the field of view splicing of the plurality of optoelectronic devices (2), and realizing the simultaneous and wide-area monitoring of all space targets within the large arc segment of the geostationary orbit covered by the system's field of view. For the longitude range of the sub-satellite point of the geostationary orbit, it is about E53°~E147°, covering more than 1 / 4 of the entire geostationary orbit.

[0027] The top surface of the base (1) has a horizontal surface, preferably a circular platform, a plurality of mounting members (3) are arranged at intervals, the top surface of the mounting member (3) is a mounting surface of the optoelectronic device (2), one optoelectronic device (2) is mounted on the optoelectronic device (2) mounting surface of one mounting member (3), the optoelectronic device (2) is a camera, the visual axis of the optoelectronic device (2) is parallel to the optoelectronic device (2) mounting surface below it, the angle of the optoelectronic device (2) mounting surface is set so that the lateral field of view of the optoelectronic device (2) is tangent to the arc segment of the geostationary orbit monitored by it, specifically, the mounting position of the mounting member (3) and the inclination angle of the optoelectronic device (2) mounting surface enable the optoelectronic device (2) to have a certain azimuth angle, pitch angle, and rotation angle, two adjacent optoelectronic devices (2) have a certain lateral field of view overlap, and the plurality of optoelectronic devices (2) constitute an optoelectronic compound eye system, covering the corresponding geostationary orbit arc segment.

[0028] A compound eye system is formed by splicing the fields of view of multiple optoelectronic devices (2). The lateral field of view of each optoelectronic device (2) is tangent to the arc segment of the monitored stationary track, forming a large field of view along the stationary track. The optoelectronic device (2) shoots by gazing. In summary, the utility model adopts a compound eye system with multiple optoelectronic devices (2) splicing their fields of view, rather than a monocular system. The spliced field of view is a near-annular field of view, rather than a rectangular field of view, and the curvature is consistent with the curvature of the monitored stationary track, which maximizes the monitoring efficiency.

[0029] In another technical solution, the overlap of the lateral fields of view of two adjacent optoelectronic devices (2) after splicing does not exceed 1%. The overlap of the lateral fields of view of two adjacent optoelectronic devices (2) after splicing does not exceed 1%, which can maximize the coverage of the monitoring field of view.

[0030] like Figure 3 As shown, in another technical solution, the mounting platform (3) is formed by splicing a first plate body (31), a second plate body (32), a third plate body (33), and a fourth plate body (34), wherein the first plate body (31) is a horizontal plate body and is mounted on the base platform (1), the second plate body (32) and the fourth plate body (34) are vertical plates and are both right-angled trapezoidal structures, and the north side is shorter than the south side, and the third plate body (33) is an inclined plate body and forms a mounting surface for the optoelectronic device (2), wherein the horizontal projections of the first plates (31) of the plurality of mounting platforms (3) are located within the circular arc segment. The mounting platform (3) has four plates, the first plate (31) being a horizontal fixing surface of the base platform (1), the second plate (32) and the fourth plate (34) being vertical support plates, and the third plate (33) being an inclined mounting surface of the optoelectronic device (2). By setting the heights of the four vertices of the second plate (32) and the fourth plate (34), the third plate (33) is inclined to different degrees, so that the optoelectronic device (2) has a certain azimuth angle, pitch angle, and rotation angle.

[0031] In another technical solution, the number of optoelectronic devices (2) is odd. The mounting member (3) at the center is arranged from north to south, and the visual axis rotation angle is 0°, that is, the angle of clockwise rotation around the visual axis from the horizontal position is 0°. In order to monitor the arc segment of the geostationary orbit, the inclination of the third plate body (33) is designed so that the optoelectronic device (2) above it has a certain pitch angle. That is, the inclined waists of the second plate body (32) and the fourth plate body (34) of a mounting platform (3) at the center are at the same height, and the southern vertices of the inclined waists of the second plate body (32) and the fourth plate body (34) are higher than the northern vertices. Multiple pairs of mounting members (3) are symmetrically arranged on both sides, and the visual axis rotation angles are negative of each other. For any mounting platform (3) on both sides, the vertical plate body close to the center is the second plate body (32), and the vertical plate body far from the center is the fourth plate body (34). In order to make the lateral fields of view of multiple pairs of optoelectronic devices (2) match the arc segments of the geostationary orbit they monitor, the inclination of the third plate body (33) is designed so that the optoelectronic device (2) above it has a certain pitch angle. The southern vertex of the inclined waist of the second plate body (32) is higher than the southern vertex of the inclined waist of the fourth plate body (34), and the northern vertex of the inclined waist of the second plate body (32) is higher than the northern vertex of the inclined waist of the fourth plate body (34). The mounting platforms (3) on both sides are symmetrically arranged, and at the same time, they have a certain azimuth angle compared with the optoelectronic device (2) at the center. That is, the heights of the southern vertices of the inclined waists of the second plate body (32) are equal from the center to both sides, and the heights of the northern vertices of the inclined waists of the second plate body (32) gradually increase from the center to both sides.

[0032] In another technical solution, the number of optoelectronic devices (2) is seven, and the field of view angle of each optoelectronic device (2) is 16°×11.7°. In one instance, to monitor the geostationary orbit target at a position around 40° north latitude, optoelectronic devices (2) with a field of view angle of 16°×11.7° are selected, and the fields of view of the seven optoelectronic devices (2) are stitched together to cover the corresponding arc segment of the geostationary orbit.

[0033] In another technical solution, the azimuth angle of the optical and electrical device (2) at the center is 180°, the elevation angle is 43°, the lateral field of view is in the horizontal direction. The azimuth angles of the optical axes of the first pair of optical and electrical devices (2) from the center to both sides are 160.3° and 199.7° respectively, the elevation angles are both 41°, and the lateral fields of view are rotated by angles of -15° and 15° respectively from the horizontal direction along the optical axes. The azimuth angles of the optical axes of the second pair of optical and electrical devices (2) are 142.4° and 217.6° respectively, the elevation angles are both 35.6°, and the lateral fields of view are rotated by angles of -28° and 28° respectively from the horizontal direction along the optical axes. The azimuth angles of the optical axes of the third pair of optical and electrical devices (2) are 127.6° and 232.4° respectively, the elevation angles are both 27.7°, and the lateral fields of view are rotated by angles of -36° and 36° respectively from the horizontal direction along the optical axes. Specifically, considering that it is difficult to obtain good observation effects when the elevation angle is less than 20°, the comprehensive field of view only needs to cover the elevation angle above 20°. In addition, in order to match the lateral fields of view of multiple pairs of optical and electrical devices (2) with the arc segments of the geostationary orbit they monitor, the azimuth angles, elevation angles, and rotation angles of the seven optical and electrical devices (2) are fixed to achieve fixed-point monitoring, effective monitoring, and high-precision monitoring.

[0034] According to the geographical coordinates of the point where the system is to be deployed and the field of view angles of a single optical and electrical device (2), calculate the pointing directions of the optical axes and the camera tilt angles of each optical and electrical device (2) to ensure that their fields of view are stitched together as Figure 4 shown; then, according to the calculation results, design and manufacture the respective mounting parts (3) for each optical and electrical device (2). The mounting parts (3) have different cross-sections to directly determine the elevation angles of the optical axes and the camera tilt angles of the corresponding single optical and electrical device (2) as Figure 3 shown; install the optical and electrical devices (2) onto the mounting parts (3) respectively, and then install them onto the same base (1) according to their respective azimuth angles, as Figures 1 - 2 shown, thus completing the design, manufacture, and installation of this system; during use, when deploying this system at the same latitude, only need to align the center of the combined field of view to the due south direction, and then adjust the base (1) to be in a horizontal state.

[0035] In one example, as Figure 5 shown, based on the monitoring point being located at about 40° north latitude and about 100° east longitude, 7 optical and electrical devices (2) are used for stitching, and the field of view of a single device is about 16.0°×11.7°. The monitoring effects are as follows:

[0036] 1. Monitoring range: For the azimuth angle of the monitoring point, it is about 120° - 240°, and for the elevation angle, it is about 23° - 43°; for the longitude range of the sub-satellite point of the geostationary orbit, it is about E53° - E147°, covering more than 1 / 4 of the entire geostationary orbit, as Figure 4 shown;

[0037] 2. Regarding the in-orbit target situation in the geostationary orbit in the first half of 2024, the total number of targets that this system can monitor simultaneously reaches about 130.

[0038] The number of devices and the processing scale described here are used to simplify the description of this utility model. Applications, modifications, and variations of this utility model are obvious to those skilled in the art.

[0039] Although the embodiments of this utility model have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for this utility model. For those familiar with this field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, this utility model is not limited to specific details and the illustrated examples described here.

Claims

1. An optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets, characterized in that, It includes several optoelectronic devices installed at intervals on the same base. The optoelectronic devices are installed on the base through mounting platforms. The horizontal field of view of each optoelectronic device is tangent to the arc segment of the geostationary orbit it monitors. After the horizontal fields of view of several optoelectronic devices are seamlessly spliced, the field of view angle is: taking the due north direction as azimuth 0°, the azimuth angle is 120° - 240°, and taking the horizontal direction as pitch 0°, the pitch angle is 23° - 43°.

2. The optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets according to claim 1, characterized in that, After the horizontal fields of view of two adjacent optoelectronic devices are spliced, the overlap does not exceed 1%.

3. The optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets according to claim 1, wherein The mounting platform is formed by splicing a first plate body, a second plate body, a third plate body, and a fourth plate body. The first plate body is a horizontal plate body and is installed on the base. The second plate body and the fourth plate body are vertical plate bodies and are both right trapezoid structures, and the northward side is shorter than the southward side. The third plate body is an inclined plate body and forms the optoelectronic device installation surface. Among them, the horizontal projection of the first plate body of several mounting platforms is located within the circular arc segment.

4. The optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets according to claim 3, wherein The number of optoelectronic devices is an odd number. The inclined waists of the second plate body and the fourth plate body of the mounting platform at the center are of the same height, and the southward vertices of the inclined waists of the second plate body and the fourth plate body are higher than the northward vertices. For any one of the mounting platforms on both sides, the vertical plate body close to the center is the second plate body, and the vertical plate body far from the center is the fourth plate body. The southward vertex of the inclined waist of the second plate body is higher than the southward vertex of the inclined waist of the fourth plate body, and the northward vertex of the inclined waist of the second plate body is higher than the northward vertex of the inclined waist of the fourth plate body. The mounting platforms on both sides are symmetrically arranged, and the heights of the southward vertices of the inclined waists of the second plate body are equal from the center to both sides, and the heights of the northward vertices of the inclined waists of the second plate body gradually increase from the center to both sides.

5. The optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets according to claim 4, wherein, The number of optoelectronic devices is seven, and the field of view angle of each optoelectronic device is 16°×11.7°.

6. The optoelectronic compound eye system for wide-area monitoring of geostationary orbit space targets according to claim 5, characterized in that, The azimuth angle of the optical axis of the optoelectronic device at the center is 180°, the pitch angle is 43°, and the horizontal field of view is in the horizontal direction. The azimuth angles of the optical axes of the first pair of optoelectronic devices from the center to both sides are 160.3° and 199.7° respectively, and the pitch angles are both 41°. The horizontal fields of view are rotated by angles of -15° and 15° respectively along the optical axis from the horizontal direction. The azimuth angles of the optical axes of the second pair of optoelectronic devices are 142.4° and 217.6° respectively, and the pitch angles are both 35.6°. The horizontal fields of view are rotated by angles of -28° and 28° respectively along the optical axis from the horizontal direction. The azimuth angles of the optical axes of the third pair of optoelectronic devices are 127.6° and 232.4° respectively, and the pitch angles are both 27.7°. The horizontal fields of view are rotated by angles of -36° and 36° respectively along the optical axis from the horizontal direction.

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