CN116112921A - Space target positioning method and device and electronic equipment - Google Patents
Space target positioning method and device and electronic equipment Download PDFInfo
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- CN116112921A CN116112921A CN202211509648.2A CN202211509648A CN116112921A CN 116112921 A CN116112921 A CN 116112921A CN 202211509648 A CN202211509648 A CN 202211509648A CN 116112921 A CN116112921 A CN 116112921A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
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- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a method and a device for positioning a space target and electronic equipment, which relate to the technical field of space positioning and comprise the following steps: acquiring return data sent by a space target by using a multi-array element phased array antenna deployed on a satellite; analyzing the return data to obtain an analysis result; the analysis result comprises: authentication information of the spatial target and target sub-beam identification for capturing return data; under the condition that the space target is a legal target according to the authentication information, determining the positioning area range of the space target based on a ground beam system and a target sub-beam identifier corresponding to the multi-array element phased array antenna. The method utilizes the multi-array element phased array antenna deployed on the satellite to acquire the return data sent by the space target, so that the space target in a wide area and a large range can be captured, and compared with the single-address antenna, the capturing capability of the space target is improved. After the return data is analyzed, the identity of the space target is also authenticated, so that the safety and reliability of the space wireless network are improved.
Description
Technical Field
The present invention relates to the field of spatial positioning technologies, and in particular, to a method and an apparatus for positioning a spatial target, and a method and an apparatus for electronic device, and an electronic device.
Background
The existing space positioning method is generally divided into an active positioning method and a passive positioning method, wherein the active positioning method refers to the method adopted by a system such as Beidou navigation and the like for transmitting the real-time position of a space spacecraft to a ground measurement and control center according to the coordinate of the space spacecraft, generally generating return data from the coordinate position of the space spacecraft, and downloading the return data to the ground measurement and control center through a communication satellite or a relay satellite so as to finish the measurement orbit and space labeling of a target. The passive positioning method is characterized in that the space spacecraft transmits certain state data through external radiation without considering the positioning rule of the space coordinate system, and the communication satellite or the relay satellite is used for transmitting the data to the ground center and then analyzing the azimuth angle and the pitch angle of an inter-satellite antenna for receiving the frame data so as to judge the approximate area direction of the space spacecraft in space, wherein the area direction is a conical radiation area. However, since the beam range of the spatial single-access antenna is limited, only the return signal in the beam range has a precondition for reception, the target cannot be captured outside the beam range, and the technical problem of poor capturing capability of the spatial target exists.
Disclosure of Invention
The invention aims to provide a method, a device and electronic equipment for positioning a space target, so as to solve the problems of poor capture capability of the space target and poor safety and reliability of a space wireless network in the existing space positioning method.
In a first aspect, the present invention provides a method for positioning a spatial target, including: acquiring return data sent by a space target by using a multi-array element phased array antenna deployed on a satellite; analyzing the return data to obtain an analysis result; wherein, the analysis result comprises: authentication information of the spatial target and a target sub-beam identification capturing the return data; under the condition that the space target is a legal target according to the authentication information, determining a positioning area range of the space target based on a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification; wherein the ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information.
In an alternative embodiment, the method further comprises: acquiring identity information of the space target; generating a digital certificate corresponding to the space target by using the identity information; registering the spatial target as a legal target based on the identity information and the digital certificate.
In an alternative embodiment, the authentication information includes: the identity information of the space object and the digital certificate corresponding to the space object; after the return data is parsed to obtain a parsing result, the method further comprises: judging whether the identity information and the digital certificate accord with preset service conditions or not; if yes, determining that the space target is a legal target; if the space target is not matched with the illegal target, determining the illegal target and suppressing the data communication of the space target.
In an alternative embodiment, the method further comprises: determining a phased array antenna coordinate system corresponding to the multi-array element phased array antenna; acquiring initial sub-beam range planning information and coordinate information of each array element in the multi-array element phased array antenna; projecting the center of the coverage area of the target sub-beam to the phased array antenna coordinate system to obtain a center angle corresponding to the target sub-beam; wherein the target sub-beam represents any sub-beam in the initial sub-beam range planning information; calculating a weighting coefficient of the target array element when the target sub-beam is constructed based on the central angle and the coordinate information of the target array element; wherein the target array element represents any array element in the multi-array element phased array antenna; adjusting the weighting coefficient until the overlapping level of the adjacent sub-beams accords with a first threshold value; and constructing the ground beam system based on the adjusted sub-beam range planning information.
In an optional embodiment, determining the location area range of the spatial target based on the ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identifier includes: acquiring coverage area information corresponding to the target sub-beam identifier in the ground beam system; and determining the positioning area range of the space target based on the coverage area information.
In an alternative embodiment, the return data is sent after the space target encrypts the encapsulated data using a public key in the digital certificate; the analysis result further comprises: the packet type of the return data; wherein the data packet type includes one of the following: an invalid information type and a resource application type.
In an alternative embodiment, if the type of the data packet is the invalid information type, the location area range of the space object is sent to a management mechanism of the space object; if the type of the data packet is the resource application type, allocating communication satellite antenna channel resources to point to the positioning area range of the space target.
In a second aspect, the present invention provides a positioning device for a spatial target, including: the first acquisition module is used for acquiring return data sent by a space target by utilizing a multi-array element phased array antenna deployed on a satellite; the analysis module is used for analyzing the return data to obtain an analysis result; wherein, the analysis result comprises: authentication information of the spatial target and a target sub-beam identification capturing the return data; the first determining module is used for determining a positioning area range of the space target based on a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification under the condition that the space target is determined to be a legal target according to the authentication information; wherein the ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information.
In a third aspect, the present invention provides an electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, when executing the computer program, performing the steps of the method for positioning a spatial target according to any of the previous embodiments.
In a fourth aspect, the present invention provides a computer readable storage medium storing computer instructions which, when executed by a processor, implement a method of locating a spatial target according to any one of the preceding embodiments.
The positioning method of the space target provided by the invention utilizes the multi-array element phased array antenna deployed on the satellite to acquire the return data sent by the space target, so that the method can capture the space target in a wide area and a large range, and compared with a single-site antenna, the method effectively improves the capturing capability of the space target. And after the return data is analyzed, the method further authenticates the identity of the space target, and only under the condition that the space target is determined to be a legal target, the space target is positioned by utilizing a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification obtained through analysis, so that the safety and the reliability of the space wireless network are effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a beam range;
FIG. 2 is a flowchart of a method for positioning a space object according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a method for digital beamforming of a phased array antenna according to an embodiment of the present invention;
fig. 4 is a schematic diagram of coverage area formed by a ground beam system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of spatial static beam coverage according to an embodiment of the present invention;
FIG. 6 is a functional block diagram of a positioning device for a space object according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
In the positioning method of the space target in the prior art, the active positioning method needs the space target to store own position information into return data for transmission, and once data leakage occurs, the safety of the space target and even the safety of a space communication system are endangered; the passive positioning method is that the space target radiates outwards to send certain state data, and the communication satellite or the relay satellite is used for transmitting the data to the ground center and then analyzing the azimuth angle and the pitch angle of the inter-satellite antenna for receiving the frame data so as to judge the approximate area direction of the space target in space, wherein the area direction is a conical radiation area (shown in figure 1), and the space return data does not relate to the actual orbit coordinates, so that the space safety and the space target concealment can be ensured to a certain extent. However, the existing passive positioning method has slow development in the field of space positioning, and mainly has the following defects:
1. Because the inter-satellite wave beam of the communication satellite or the relay satellite is cone, space targets such as a spacecraft and regional targets in the wave beam coverage range can only be obtained in cone three-dimensional space, more accurate longitude and latitude heights cannot be obtained, and the wave beam radius of a common single-address antenna determines the error radius of positioning;
2. the poor acquisition capability of a spatially returned target is limited by the beam range of the spatially single-site antenna, and only the returned signal within that beam range has a prerequisite for reception, so that the target cannot be acquired outside the beam range. In other words, if the space target is passively spatially located through the single-site antenna, more high-orbit satellites are needed to complete the networking, the cost is high, the benefit ratio is low, and therefore the using effect of the method is poor.
In view of the above, the embodiments of the present invention provide a method for positioning a space object, which is used for alleviating the above technical problems.
Example 1
Fig. 2 is a flowchart of a method for positioning a spatial target according to an embodiment of the present invention, as shown in fig. 2, where the method specifically includes the following steps:
step S102, acquiring return data sent by a space target by using a multi-array element phased array antenna deployed on a satellite.
Specifically, an on-board deployed multi-element phased array antenna may generate forward and return beams. Where the forward beam refers to the satellite to space target direction and the return beam refers to the space target to satellite direction. The backward beam adopts a ground digital beam forming technology, the array signals of the phased array are all forwarded to the ground and are subjected to beam forming in a plurality of computing units on the ground, and fig. 3 is a schematic diagram of a method for forming the digital beam of the phased array antenna, and the system has the advantages of simple framework, high degree of digitization and flexible processing mode, can be expanded to form a plurality of backward beams (namely the digital beam in fig. 3) as required, has higher flexibility in satellite beam configuration design, and supports the provision of backward low-speed data transmission for more space targets.
Therefore, the method provided by the embodiment of the invention is a method for positioning the space target based on the space return data of the phased array antenna, and the return data sent by the space target in a wide area and a large range can be captured by the multi-array element phased array antenna (namely a multiple access antenna) carried by the communication satellite or the relay satellite. It should be noted that, in the embodiment of the present invention, the spatial target does not include only a space domain or a space domain, but refers to any target in space-space (space domain, space domain and region).
In order to avoid the service information being monitored by the network, the return data may be return resource application information sent by the space target when the space target needs to apply for a high-speed communication channel or a secure communication channel, or may also be invalid information (simply used for positioning), and does not include the service information such as self coordinate position.
And step S104, analyzing the return data to obtain an analysis result.
Wherein, the analysis result comprises: authentication information of the spatial target and target beamlet identification to capture return data.
After the on-board multi-array element phased array antenna acquires the return data sent by the space target, the return data is downloaded to the ground measurement and control center, the ground measurement and control center analyzes the return data according to a universal protocol system after receiving the return data, and the obtained analysis result comprises the authentication information of the space target and the target sub-beam identification for capturing the return data. The authentication information may be understood as information for authenticating the identity of the space object.
The multiple backward beams (i.e., sub-beams) generated by the known multi-array element phased array antenna are used for providing a backward data transmission channel for space targets, and full coverage of all space targets can be realized by constructing a ground beam system corresponding to the multi-array element phased array antenna. Since the space object is necessarily to transmit the return data through a certain return beam (i.e., the object sub-beam), the ground measurement and control center can obtain the object sub-beam identification (information for uniquely identifying the identity) through the electric signal calculation unit when resolving the return data. I.e. the return data of the spatial target, which is specifically captured by which sub-beam.
Step S106, under the condition that the space target is a legal target according to the authentication information, determining the positioning area range of the space target based on a ground beam system and a target sub-beam mark corresponding to the multi-array element phased array antenna.
After the authentication information of the space target is analyzed, positioning service can be provided for the space target only under the condition that the space target is determined to be a legal target according to the authentication information, and at the moment, the positioning area range of the space target can be determined according to a ground beam system corresponding to the pre-constructed multi-array element phased array antenna and the analyzed target sub-beam identification. The ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information. Fig. 4 is a schematic view of coverage area formed by a terrestrial beam system, in fig. 4, each circle represents a coverage area, and each circle has a unique number, i.e., a sub-beam identifier, which may be manually specified by a user.
That is, the coverage area of each sub-beam has been defined in the terrestrial beam hierarchy, and it can be determined that the spatial target is located within the coverage area of that sub-beam, as long as it is the return data captured by which sub-beam. Furthermore, if the return data of the space object contains data such as the number of tracks, the longitude and latitude high coordinates can be further accurately determined according to the tracks. Therefore, compared with the passive positioning method of the single-address antenna, the method provided by the embodiment of the invention is in the whole domain The positioning accuracy and the accuracy of the circumference are obviously improved, and the ratio of the improvement of the two-dimensional section is 1-R on the assumption that the beam radius of the phased array antenna is R and the beam radius of the original single-address antenna is R 2 /R 2 。
The method for positioning the space target provided by the embodiment of the invention acquires the return data sent by the space target by utilizing the multi-array element phased array antenna deployed on the satellite, so that the method can capture the space target in a wide area and a large range, and compared with a single-address antenna, the method effectively improves the capturing capability of the space target. And after the return data is analyzed, the method further authenticates the identity of the space target, and only under the condition that the space target is determined to be a legal target, the space target is positioned by utilizing a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification obtained through analysis, so that the safety and the reliability of the space wireless network are effectively improved.
In an alternative implementation, the method of the embodiment of the present invention further includes the following steps:
step S201, acquiring identity information of a space object.
Step S202, a digital certificate corresponding to the space object is generated by using the identity information.
Step S203, registering the space object as a legal object based on the identity information and the digital certificate.
Specifically, before using the positioning server, the space target needs to register with the ground measurement and control center, identity information must be provided during registration, if the space target is a satellite, the identity information can be data which can indicate the identity of the satellite, such as the number of the satellite, and the embodiment of the invention does not specifically limit the content contained in the identity information, and a user can set according to actual requirements.
After receiving the identity information of the space target, the ground measurement and control center generates a corresponding digital certificate by utilizing the identity information, wherein the digital certificate comprises encryption and decryption keys for data. And then, the identity information and the digital certificate of the space target are stored together, and the space target is verified by the subsequent service, namely the specific process of registering the space target. And unregistered spatial targets do not support the spatial location service.
In an alternative embodiment, the authentication information includes: the identity information of the space target and the digital certificate corresponding to the space target; after the return data is analyzed to obtain an analysis result, the method further comprises the following steps:
In step S1051, it is determined whether the identity information and the digital certificate meet the preset service condition.
If yes, the following step S1052 is executed; if not, the following step S1053 is performed.
Step S1052, determining that the space object is a legal object.
In step S1053, it is determined that the space object is an illegal object, and data communication of the space object is suppressed.
After the analysis result of the return data is obtained, whether the space target is legal or not needs to be judged by utilizing the authentication information contained in the space target, specifically, whether the identity information and the digital certificate meet the preset service condition or not is judged, specifically, whether the identity information and the digital certificate are locally stored or not and whether the identity information and the digital certificate are matched or not is judged, if yes, the space target which is registered and in the service period is indicated, namely, the space target meets the preset service condition, and the space target is determined to be the legal target, so that corresponding service is provided for the space target.
If the data are not stored in the local storage space or the digital certificate is found to be unmatched with the identity information through analysis, the space target is not in accordance with the preset service condition, and the space target is determined to be an illegal target. At this time, there are two possible situations, one is that the intrusion is interfered by the enemy, and the other is that the service is provided originally, the network access rule of the system is known, but the service should not be provided currently. In either case, the presence of the spatial target signal is considered as an interference source, and because bandwidth resource usage by other users is affected, it is necessary to mask such effects by means of signal enhancement or power steering, etc., and throttle the data communication of the spatial target.
In the embodiment of the invention, the space phased array antenna ground beam system is constructed according to the deployment condition of the high orbit satellite networking and the radiation range of the phased array antenna by referring to the space static digital beam forming technology, and has the sub-beam range planning information and the sub-beam identification. The coverage area of the multi-array element phased array antenna needs to be set by a user according to actual requirements, and as shown in fig. 5, the three-star networking can realize the beam coverage of the whole area low-rail range at the same moment. The construction method of the ground beam system corresponding to the multi-array element phased array antenna deployed on a single satellite is described in detail below. When a plurality of satellites are used for networking, respective ground beam systems need to be respectively constructed by referring to the method.
In an alternative implementation, the method of the embodiment of the present invention further includes the following steps:
step S301, a phased array antenna coordinate system corresponding to the multi-array element phased array antenna is determined.
Knowing that the origin of the satellite coordinate system is located at the center of mass of the satellite, the X axis is vertical to the satellite east plate and positive outwards, the Y axis is vertical to the satellite south plate and positive outwards, and the Z axis is vertical to the satellite to the floor and positive outwards.
Step S302, initial sub-beam range planning information and coordinate information of each array element in the multi-array element phased array antenna are obtained.
Step S303, the coverage area center of the target sub-beam is projected to a phased array antenna coordinate system, and a center angle corresponding to the target sub-beam is obtained.
In the embodiment of the invention, the construction of the ground beam system is the result of repeated adjustment, a default initial sub-beam range planning information is firstly set according to experience before adjustment, and then the quantity of sub-beams, coverage information and the like are adjusted on the basis of the default initial sub-beam range planning information until the ground beam system meeting the conditions is obtained.
After the initial sub-beam range planning information is obtained, firstly, the coverage area center of the target sub-beam is projected to a phased array antenna coordinate system to obtain a center angle corresponding to the target sub-beam, wherein the target sub-beam represents any sub-beam in the initial sub-beam range planning information. The center angle includes: azimuth angle and pitch angle.
Step S304, calculating the weighting coefficient of the target array element when the target sub-beam is constructed based on the central angle and the coordinate information of the target array element.
The embodiment of the invention utilizes the arithmetic formula
Calculating a weighting coefficient, wherein θ represents an azimuth angle corresponding to the target sub-beam, and +. >
Representing the corresponding pitch angle of the target sub-beam, (x) n ，y n ) Represents the coordinates of the target array element, ψ n And (3) representing the weighting coefficient of a target array element, wherein lambda represents the wavelength of the multi-array element phased array antenna, and the target array element represents any array element in the multi-array element phased array antenna. The weighting coefficients may be digital beam forming weighting coefficients corresponding to each sub-beam.
In step S305, the weighting coefficients are adjusted until the overlapping levels of the adjacent sub-beams meet the first threshold.
The satellite phased array antenna beam range can realize backward digital beam forming based on a ground system, and the weighting coefficients are transmitted to a ground computing unit, so that a space static beam can be generated. On the basis of the constructed return beam of the satellite multiple access system, in order to ensure the full coverage of all user targets in the space, the capability requirement of a single sub-beam, the size of a coverage area and the orbit position distribution under the satellite networking condition are considered. Because the wider the sub-beams, the fewer the number of beams needed, but the more the performance degradation of the beam edges; conversely, the narrower the sub-beams, the greater the number of beams required. In addition, the overlapping level of adjacent beams needs to be considered, the smaller the overlapping level is, the smaller the signal-to-noise ratio loss of the user in the beam overlapping area is, but the larger the number of beams is. The embodiment of the invention adopts the adjacent sub-beam overlapping level of 1.5db (namely the first threshold value in the above), the high orbit satellite needs 39 beams to cover the whole surface area, the opening angle is +/-8.5 degrees, the low orbit space spacecraft which covers 350-1100km, 55 beams are needed, and the opening angle is +/-10 degrees.
Therefore, according to the analysis and calculation result of the relative space position of the expected area and the communication or relay satellite, the weighting coefficients of the plurality of return beams are adjusted, so that a plurality of static sub-beams overlapped according to a certain level can be formed, and the full coverage of a certain orbit height is realized.
Step S306, constructing a ground beam system based on the adjusted sub-beam range planning information.
After all the weighting coefficients are adjusted, the ground computing unit can determine the adjusted sub-beam range planning information based on the finally determined weighting coefficients, further determine the coverage area range of each sub-beam, and allocate a unique identifier to each sub-beam, thereby completing the construction of a ground beam system.
In an optional embodiment, in step S106, the positioning area range of the spatial target is determined based on the ground beam system and the target sub-beam identifier corresponding to the multi-array element phased array antenna, which specifically includes the following contents: acquiring coverage area information corresponding to a target sub-beam identifier in a ground beam system; a location area range of the spatial target is determined based on the coverage area information.
Under the condition that the identification of each sub-beam and the coverage area information of each sub-beam in a ground beam system are known, if the target sub-beam identification can be resolved from the return data of the space target, the space target is indicated to be in the coverage area of the target sub-beam, and if the return data does not carry other information capable of assisting in positioning of the space target, the positioning area range of the space target can be determined to be the coverage area of the target sub-beam.
In an alternative embodiment, the return data is sent after the space object encrypts the encapsulated data using the public key in the digital certificate. The analysis result of the return data further comprises: a packet type of the return data; wherein the data packet type includes one of the following: an invalid information type and a resource application type.
In the embodiment of the present invention, in order to prevent leakage of data information, even if invalid information is not sent in plaintext, the returned data sent by the space target is encapsulated into a data packet, and the encapsulated data is encrypted and sent by using a public key in a digital certificate distributed and stored during registration, and the type of the data packet is added to the front of the data segment in the encapsulation process, including: the method comprises the steps that after a receiving party receives a data packet, the receiving party decrypts according to a public key in a digital certificate stored by the receiving party, then a field representing the type of the data packet is analyzed from decrypted data, and then corresponding processing is carried out according to the type of the data packet.
In an alternative embodiment, if the type of the data packet is an invalid information type, the location area range of the space object is sent to a management mechanism of the space object; if the type of the data packet is the resource application type, allocating the positioning area range of the communication satellite antenna channel resource pointing to the space target.
That is, if the space object sends invalid information, the object is simply to implement positioning, and when the space object sends information of resource application class, it is indicated that the space object requests a high-speed communication channel or a safe communication channel, and after implementing positioning, the communication satellite antenna channel resources should be allocated according to the requirement to point to the positioning area range so as to provide communication resource scheduling guarantee.
In summary, the embodiment of the invention introduces a space target positioning method based on space return data, which is suitable for supporting a space user target with a space return communication protocol, and is used for completing the regional positioning of the space target under the precondition that the self positioning is not required to be actively perceived, so that the real-time adjustment of the communication transmission channel guarantee for the space target is facilitated, the high-speed data transmission is completed, the coordinate leakage of a space signal is avoided, and the information security of the space target is ensured.
The method solves the defects of poor accuracy and low precision of the single-address antenna positioning space target according to the return signal. In addition, identity authentication is performed through the digital certificate in the space communication process, so that the safety and reliability of the space wireless network are improved, and the hidden risk caused by data leakage is avoided because the returned data does not contain service information. If the space target adds the resource application information in the return data, the resource application can be realized on the premise of not revealing self-positioning, and the space target is an auxiliary communication means which can be used for safety communication, high-speed data transmission and the like.
Example two
The embodiment of the invention also provides a positioning device of the space target, which is mainly used for executing the positioning method of the space target provided by the first embodiment, and the positioning device of the space target provided by the embodiment of the invention is specifically described below.
Fig. 6 is a functional block diagram of a positioning device for a spatial target according to an embodiment of the present invention, as shown in fig. 6, the device mainly includes: a first acquisition module 10, a parsing module 20, a first determination module 30, wherein:
the first acquisition module 10 is configured to acquire return data sent by a space target by using a multi-array element phased array antenna deployed on a satellite.
The analysis module 20 is used for analyzing the return data to obtain an analysis result; wherein, the analysis result comprises: authentication information of the spatial target and target beamlet identification to capture return data.
The first determining module 30 is configured to determine, when it is determined that the spatial target is a legal target according to the authentication information, a positioning area range of the spatial target based on a ground beam system and a target sub-beam identifier corresponding to the multi-array element phased array antenna; the ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information.
The positioning device for the space target provided by the embodiment of the invention acquires the return data sent by the space target by utilizing the multi-array element phased array antenna deployed on the satellite, so that the device can capture the space target in a wide area and a large range, and compared with a single-address antenna, the device effectively improves the capturing capability of the space target. And after the return data is analyzed, the device further authenticates the identity of the space target, and only when the space target is determined to be a legal target, the space target is positioned by utilizing a ground beam system corresponding to the multi-array element phased array antenna and a target sub-beam mark obtained through analysis, so that the safety and the reliability of the space wireless network are effectively improved.
Optionally, the apparatus further comprises:
and the second acquisition module is used for acquiring the identity information of the space target.
And the generation module is used for generating the digital certificate corresponding to the space target by using the identity information.
And the registration module is used for registering the space target as a legal target based on the identity information and the digital certificate.
Optionally, the authentication information includes: the identity information of the space target and the digital certificate corresponding to the space target; the apparatus further comprises:
And the judging module is used for judging whether the identity information and the digital certificate accord with preset service conditions.
And the second determining module is used for determining that the space target is a legal target under the condition that the preset service conditions of the identity information and the digital certificate accord with the preset service conditions.
And the third determining module is used for determining the space target as an illegal target and suppressing the data communication of the space target under the condition that the preset service conditions of the identity information and the digital certificate are not in accordance with the preset service conditions.
Optionally, the apparatus further comprises:
and the fourth determining module is used for determining a phased array antenna coordinate system corresponding to the multi-array element phased array antenna.
And the third acquisition module is used for acquiring the initial sub-beam range planning information and the coordinate information of each array element in the multi-array element phased array antenna.
The projection module is used for projecting the coverage area center of the target sub-beam to a phased array antenna coordinate system to obtain a center angle corresponding to the target sub-beam; wherein the target sub-beam represents any one of the sub-beams in the initial sub-beam range planning information.
The calculation module is used for calculating the weighting coefficient of the target array element when the target sub-beam is constructed based on the central angle and the coordinate information of the target array element; wherein the target array element represents any array element in the multi-array element phased array antenna.
And the adjusting module is used for adjusting the weighting coefficient until the overlapping level of the adjacent sub-beams accords with the first threshold value.
And the construction module is used for constructing a ground beam system based on the adjusted sub-beam range planning information.
Optionally, the first determining module 30 is specifically configured to:
and acquiring coverage area information corresponding to the target sub-beam identification in the ground beam system.
A location area range of the spatial target is determined based on the coverage area information.
Optionally, the return data is sent after the space object encrypts the encapsulated data using the public key in the digital certificate.
The analysis result also comprises: a packet type of the return data; wherein the data packet type includes one of the following: an invalid information type and a resource application type.
Optionally, if the type of the data packet is an invalid information type, the location area range of the space object is sent to a management organization of the space object.
If the type of the data packet is the resource application type, allocating the positioning area range of the communication satellite antenna channel resource pointing to the space target.
Example III
Referring to fig. 7, an embodiment of the present invention provides an electronic device, including: a processor 60, a memory 61, a bus 62 and a communication interface 63, the processor 60, the communication interface 63 and the memory 61 being connected by the bus 62; the processor 60 is arranged to execute executable modules, such as computer programs, stored in the memory 61.
The memory 61 may include a high-speed random access memory (RAM, random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory. The communication connection between the system network element and at least one other network element is achieved via at least one communication interface 63 (which may be wired or wireless), and may use the internet, a wide area network, a local network, a metropolitan area network, etc.
Bus 62 may be an ISA bus, a PCI bus, an EISA bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one bi-directional arrow is shown in FIG. 7, but not only one bus or type of bus.
The memory 61 is configured to store a program, and the processor 60 executes the program after receiving an execution instruction, and the method executed by the apparatus for defining a process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 60 or implemented by the processor 60.
The processor 60 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 60. The processor 60 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but may also be a digital signal processor (Digital Signal Processing, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 61 and the processor 60 reads the information in the memory 61 and in combination with its hardware performs the steps of the method described above.
The embodiment of the invention provides a method, a device and a computer program product of an electronic device for locating a space target, which comprise a computer readable storage medium storing a non-volatile program code executable by a processor, wherein the program code comprises instructions for executing the method described in the previous method embodiment, and specific implementation can be referred to the method embodiment and will not be repeated herein.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A method for locating a spatial target, comprising:
Acquiring return data sent by a space target by using a multi-array element phased array antenna deployed on a satellite;
analyzing the return data to obtain an analysis result; wherein, the analysis result comprises: authentication information of the spatial target and a target sub-beam identification capturing the return data;
under the condition that the space target is a legal target according to the authentication information, determining a positioning area range of the space target based on a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification; wherein the ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information.
2. The method of locating a spatial target according to claim 1, further comprising:
acquiring identity information of the space target;
generating a digital certificate corresponding to the space target by using the identity information;
registering the spatial target as a legal target based on the identity information and the digital certificate.
3. The method for locating a spatial target according to claim 2, wherein the authentication information includes: the identity information of the space object and the digital certificate corresponding to the space object;
After the return data is parsed to obtain a parsing result, the method further comprises:
judging whether the identity information and the digital certificate accord with preset service conditions or not;
if yes, determining that the space target is a legal target;
if the space target is not matched with the illegal target, determining the illegal target and suppressing the data communication of the space target.
4. The method of locating a spatial target according to claim 1, further comprising:
determining a phased array antenna coordinate system corresponding to the multi-array element phased array antenna;
acquiring initial sub-beam range planning information and coordinate information of each array element in the multi-array element phased array antenna;
projecting the center of the coverage area of the target sub-beam to the phased array antenna coordinate system to obtain a center angle corresponding to the target sub-beam; wherein the target sub-beam represents any sub-beam in the initial sub-beam range planning information;
calculating a weighting coefficient of the target array element when the target sub-beam is constructed based on the central angle and the coordinate information of the target array element; wherein the target array element represents any array element in the multi-array element phased array antenna;
Adjusting the weighting coefficient until the overlapping level of the adjacent sub-beams accords with a first threshold value;
and constructing the ground beam system based on the adjusted sub-beam range planning information.
5. The method for locating a spatial target according to claim 1, wherein determining a location area range of the spatial target based on a ground beam system corresponding to the multi-element phased array antenna and the target sub-beam identification comprises:
acquiring coverage area information corresponding to the target sub-beam identifier in the ground beam system;
and determining the positioning area range of the space target based on the coverage area information.
6. The method for locating a spatial target according to claim 2, wherein,
the return data is sent after the space target encrypts the packaged data by utilizing a public key in the digital certificate;
the analysis result further comprises: the packet type of the return data; wherein the data packet type includes one of the following: an invalid information type and a resource application type.
7. The method for locating a spatial target according to claim 6, wherein,
if the type of the data packet is the invalid information type, transmitting the positioning area range of the space target to a management mechanism of the space target;
If the type of the data packet is the resource application type, allocating communication satellite antenna channel resources to point to the positioning area range of the space target.
8. A device for locating a spatial target, comprising:
the first acquisition module is used for acquiring return data sent by a space target by utilizing a multi-array element phased array antenna deployed on a satellite;
the analysis module is used for analyzing the return data to obtain an analysis result; wherein, the analysis result comprises: authentication information of the spatial target and a target sub-beam identification capturing the return data;
the first determining module is used for determining a positioning area range of the space target based on a ground beam system corresponding to the multi-array element phased array antenna and the target sub-beam identification under the condition that the space target is determined to be a legal target according to the authentication information; wherein the ground beam system comprises a plurality of sub-beams, and each sub-beam has corresponding sub-beam identification and coverage area information.
9. An electronic device comprising a memory, a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, realizes the steps of the method for localization of a spatial object according to any of claims 1 to 7.
10. A computer readable storage medium storing computer instructions which, when executed by a processor, implement the method of locating a spatial target according to any one of claims 1 to 7.
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| WO2016115394A1 (en) * | 2015-01-16 | 2016-07-21 | Hughes Network Systems, Llc | Method and apparatus for beam selection for a multibeam multi-satellite communications system |
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