CN111929675B - Four-phased array ultra-low elevation angle space domain tracking multi-target method and system - Google Patents
Four-phased array ultra-low elevation angle space domain tracking multi-target method and system Download PDFInfo
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- CN111929675B CN111929675B CN202010621204.2A CN202010621204A CN111929675B CN 111929675 B CN111929675 B CN 111929675B CN 202010621204 A CN202010621204 A CN 202010621204A CN 111929675 B CN111929675 B CN 111929675B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
- G01S13/723—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data
- G01S13/726—Multiple target tracking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Radar, Positioning & Navigation (AREA)
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Abstract
The invention relates to a four phased array ultra-low elevation angle cross-airspace tracking multi-target method and system, wherein the method comprises the following steps: s1, uniformly distributing four phased array antennas in the azimuth direction; s2, respectively generating four local operation management tables by adopting an operation table generation unit according to the track information of the tracked multiple targets; s3, adopting a data transmission unit to respectively transmit the local operation management table to a beam management module and a baseband processing module; s4, the beam management module generates four-array weight and angle information for controlling the phased array antenna according to the local operation management table; s5, the baseband processing module generates tracking auxiliary information for tracking the target according to the local operation management table; s6, controlling the phased array antenna to operate and track the target based on the four-array weight, the angle information and the tracking auxiliary information. By means of the arrangement of the chamfer arrays, sidelobe suppression of the array is improved, and elevation coverage of the four phased arrays is wider.
Description
Technical Field
The invention relates to the technical field of phased array antenna tracking, in particular to a four-phased array ultra-low elevation cross-airspace tracking multi-target method and system.
Background
The phased array antenna tracking multi-target technology has the advantages of high control precision, high response speed, wider range of main lobe directional beams and the like, and is widely applied to the fields of satellite communication, measurement and control, military tactical communication and the like. A single phased array is limited in beam coverage of its array element antennas, and typically has a large working elevation angle, so that coverage of airspace is small. Due to the characteristics, the single phased array antenna has natural limitation when tracking the full airspace multiple targets, is difficult to work in a wider elevation coverage range, and generally, the single phased array is difficult to meet the requirement of realizing the tracking of the multiple targets across airspace in a wider pitch angle range.
Disclosure of Invention
The invention aims to provide a four-phased array ultra-low elevation cross-airspace tracking multi-target method and system, which solve the limitation of high working elevation of a phased array antenna.
In order to achieve the aim of the invention, the invention provides a four-phased array ultra-low elevation cross-airspace tracking multi-target method, which comprises the following steps:
s1, uniformly distributing four phased array antennas in the azimuth direction;
s2, respectively generating four local operation management tables by adopting an operation table generation unit according to the track information of the tracked multiple targets;
s3, adopting a data transmission unit to respectively transmit the local operation management table to a beam management module and a baseband processing module;
s4, the beam management module generates four-array weight and angle information for controlling the phased array antenna according to the local operation management table;
s5, the baseband processing module generates tracking auxiliary information for tracking the target according to the local operation management table;
s6, controlling the phased array antenna to operate and track the target based on the four-array weight, the angle information and the tracking auxiliary information.
According to one aspect of the present invention, in step S1, four phased array antennas are arranged in azimuth directions of 0 °, 90 °, 180 °, 270 °, respectively, and back tilt angles in pitch directions in the range of 38 ° to 51 ° are set, respectively.
According to one aspect of the invention, four of the phased array corner cut arrays are laid out.
According to one aspect of the invention, the local operation management table includes: four sets of timetables, routing tables, configuration tables, uplink data and long-term forecast almanac;
the time table prescribes a transceiving time slot of system operation in each hour;
the routing table specifies the routing relationships of the targets, i.e. the data transmission paths, that are visible per hour. The time slots are used in one-to-one correspondence with the receiving and transmitting time slots specified by the time table;
the configuration table indicates whether the target visible to each slot opens a data transceiving channel.
According to one aspect of the invention, the beam management module comprises: an angle information calculation unit for generating the angle information, and a weight generation unit for generating the four-matrix weights.
According to one aspect of the invention, the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a time table operating unit, an uplink data processing unit and a data measuring processing unit;
the target, the beam management module and the baseband processing module operate according to the receiving and transmitting time slots specified by the time schedule to complete satellite-ground chain establishment;
the phased array antenna, the visible targets, the beam management module and the baseband processing module work simultaneously according to the local operation management table, and when the states of all the local operation management tables are consistent during data transmission and data reception, the beam management module and the baseband processing module are linked with the targets for realizing a chain establishment, and are used for configuring four phased array antennas in an operation time slot to carry out multi-target tracking; all the local operation management tables are matched with each other in state, namely the phased array antenna is matched with the target in a receiving and transmitting time slot specified by a time table, a data transmission path specified by a routing table is matched with a receiving and transmitting relation specified by the time table, and a data receiving and transmitting channel specified by a configuration table is opened.
According to one aspect of the invention, in step S6, four of the phased array antennas are operated simultaneously and cover a full spatial range of elevation angles above 5 °.
In order to achieve the above object, the present invention provides a system of the four phased array ultra-low elevation angle cross-airspace tracking multi-target method, including:
the phased array antenna is provided with four parts and is uniformly distributed in the azimuth direction;
an operation table generating unit, configured to generate a local operation management table corresponding to the phased array antenna;
a data transmission unit, configured to transmit the local operation management table;
the beam management module is used for generating four-array weight and angle information for controlling the phased array antenna according to the local operation management table;
and the baseband processing module is used for generating tracking auxiliary information for tracking the target according to the local operation management table.
According to one aspect of the invention, the beam management module comprises: an angle information calculation unit for generating the angle information, and a weight generation unit for generating the four-matrix weights.
According to one aspect of the invention, the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a time table operating unit, an uplink data processing unit and a data measuring processing unit.
According to the scheme, the side lobe suppression of the phased array is greatly improved by arranging the corner cut arrays of the four phased array antennas; in addition, through controlling the inclination angle of the array phased array antenna, the four phased array elevation coverage is wider, and the maximum coverage reaches more than 5 degrees.
According to the scheme of the invention, the four phased array arrays are subjected to multi-target tracking, the four phased array arrays are placed in a 45-degree inclined mode and are respectively responsible for corresponding airspace, the design can increase the coverage airspace range of the whole phased array by more than 5 degrees, meanwhile, the four phased array corner cut arrays are arranged, under the premise that the gain of the arrays is not influenced, the side lobe suppression of the corner cut array layout is about 6dB lower than that of the array plane, and the antenna gains of the four phased array arrays are equivalent. Furthermore, the scheme of the invention can realize multi-target cross-airspace simultaneous tracking on the premise of higher pitch angle coverage, and well inhibit antenna sidelobes.
Drawings
FIG. 1 schematically illustrates a block diagram of steps of a four phased array ultra low elevation cross-airspace tracking multi-target method in accordance with one embodiment of the invention;
FIG. 2 schematically illustrates a system architecture diagram of a four phased array ultra low elevation cross-airspace tracking multi-target in accordance with one embodiment of the invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
In describing embodiments of the present invention, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in terms of orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and do not denote or imply that the devices or elements in question must have a particular orientation, be constructed and operated in a particular orientation, so that the above terms are not to be construed as limiting the invention.
The present invention will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present invention are not limited to the following embodiments.
As shown in fig. 1, according to an embodiment of the present invention, a four phased array ultra-low elevation angle cross-airspace tracking multi-target method of the present invention includes the following steps:
s1, uniformly distributing four phased array antennas in the azimuth direction;
s2, respectively generating four local operation management tables by adopting an operation table generation unit according to the track information of the tracked multiple targets;
s3, adopting a data transmission unit to respectively transmit the local operation management table to a beam management module and a baseband processing module;
s4, generating four-array weight and angle information for controlling the phased array antenna by the beam management module according to the local operation management table;
s5, the baseband processing module generates tracking auxiliary information for tracking the target according to the local operation management table;
s6, controlling the phased array antenna to operate and track the target based on the four-array weight, the angle information and the tracking auxiliary information.
According to one embodiment of the present invention, in step S1, four phased array antennas are arranged in azimuth directions of 0 °, 90 °, 180 °, 270 °, respectively, and back tilt angles in the range of 38 ° to 51 ° are set in pitch directions, respectively. In this embodiment, a 45 ° back tilt angle is optionally provided in the pitch direction. In this embodiment, a four phased array corner cut array is deployed.
As shown in fig. 2, according to an embodiment of the present invention, a local operation management table includes: four sets of timetables, routing tables, configuration tables, uplink data and long-term forecast almanac. In this embodiment, the operation table generating unit generates the local operation management table according to each phased array antenna, that is, the local operation management table corresponds to the phased array antenna one by one. In this embodiment, the schedule defines the time slots for the system to operate within each hour; the routing table defines the routing relation of the targets visible in each hour, namely a data transmission path, which is used in one-to-one correspondence with the receiving and transmitting time slots defined by the time table; the configuration table gives whether the target visible to each slot opens a data transceiving channel.
As shown in fig. 2, according to an embodiment of the present invention, a beam management module includes: an angle information calculation unit for generating angle information, and a weight generation unit for generating four matrix weights.
As shown in fig. 2, according to an embodiment of the present invention, the baseband processing module includes: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a time table operating unit, an uplink data processing unit and a data measuring processing unit. In this embodiment, the tracked target, the beam management module and the baseband processing module operate according to the transceiving time slots specified by the schedule to complete satellite-to-ground link establishment; the phased array antenna, the visible target, the beam management module and the baseband processing module work simultaneously according to the local operation management table, and when the states of all the local operation management tables are consistent with each other during data transmission and data reception, namely, the phased array antenna is matched with a receiving and transmitting time slot specified by a tracked target time table, a data transmission path specified by a routing table is matched with a receiving and transmitting relation specified by the time table, and a data receiving and transmitting channel specified by a configuration table is opened, the beam management module and the baseband processing module realize chain establishment with the tracked target, and are used for configuring four phased array antennas in the operation time slot to carry out multi-target tracking.
In step S6, according to one embodiment of the present invention, the four phased array antennas are operated simultaneously and cover a full spatial range of elevation angles above 5 °.
As shown in fig. 2, according to an embodiment of the present invention, a system for a four phased array ultra low elevation cross-airspace tracking multi-target method of the present invention includes: a phased array antenna 110, an operation table generation unit 101, a data transmission unit 102, a beam management module 103, and a baseband processing module 104. In this embodiment, the phased array antenna is provided with four parts (i.e., phased array antenna a, phased array antenna B, phased array antenna C, phased array antenna D in the drawing), and is uniformly distributed in the azimuth direction, specifically, is respectively arranged in azimuth directions of 0 °, 90 °, 180 °, 270 °, the array faces outward, and the pitch direction is 45 ° back tilt. The operation table generation unit 101 is configured to generate a local operation management table corresponding to a phased array antenna. The data transmission unit 102 is configured to transmit the local operation management table to the beam management module 103 and the baseband processing module 104. The beam management module 103 is configured to generate four-array weight and angle information for controlling the phased array antenna according to the local operation management table. The baseband processing module 104 is configured to generate tracking assistance information for tracking the target according to the local operation management table.
As shown in fig. 2, according to one embodiment of the present invention, the beam management module 103 includes: an angle information calculation unit 1031 for generating angle information, and a weight generation unit 1032 for generating four matrix weights.
As shown in fig. 2, the baseband processing module 104 includes: a baseband processing unit 1041, a tracking assistance information calculating unit 1042, a schedule operating unit 1043, an uplink data processing unit 1044, and a data measurement processing unit 1045.
According to one embodiment of the present invention, the beam management module 103 and the baseband processing module 104 respectively correspond to each phased array antenna to generate the data required for its tracking operation.
The foregoing is merely exemplary of embodiments of the invention and, as regards devices and arrangements not explicitly described in this disclosure, it should be understood that this can be done by general purpose devices and methods known in the art.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A four phased array ultra-low elevation cross-airspace tracking multi-target method comprises the following steps:
s1, uniformly distributing four phased array antennas in the azimuth direction;
s2, respectively generating four local operation management tables by adopting an operation table generation unit according to the track information of the tracked multiple targets;
s3, adopting a data transmission unit to respectively transmit the local operation management table to a beam management module and a baseband processing module;
s4, the beam management module generates four-array weight and angle information for controlling the phased array antenna according to the local operation management table;
s5, the baseband processing module generates tracking auxiliary information for tracking the target according to the local operation management table;
s6, controlling the phased array antenna to operate and track the target based on the four-array weight, the angle information and the tracking auxiliary information;
the local operation management table includes: four sets of timetables, routing tables, configuration tables, uplink data and long-term forecast almanac;
the time table prescribes a transceiving time slot of system operation in each hour;
the routing table defines a routing relation, namely a data transmission path, of the target visible in each hour, and the routing relation is used in one-to-one correspondence with the receiving and transmitting time slots defined by the time table;
the configuration table shows whether the target visible in each time slot opens a data receiving and transmitting channel;
the baseband processing module includes: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a time table operating unit, an uplink data processing unit and a data measuring processing unit;
the target, the beam management module and the baseband processing module operate according to the receiving and transmitting time slots specified by the time schedule to complete satellite-ground chain establishment;
the phased array antenna, the visible targets, the beam management module and the baseband processing module work simultaneously according to the local operation management table, and when the states of all the local operation management tables are consistent during data transmission and data reception, the beam management module and the baseband processing module are linked with the targets for realizing a chain establishment, and are used for configuring four phased array antennas in an operation time slot to carry out multi-target tracking; all the local operation management tables are matched with each other in state, namely the phased array antenna is matched with the target in a receiving and transmitting time slot specified by a time table, a data transmission path specified by a routing table is matched with a receiving and transmitting relation specified by the time table, and a data receiving and transmitting channel specified by a configuration table is opened.
2. The four phased array ultra-low elevation cross-airspace tracking multi-target method according to claim 1, wherein in step S1, four phased array antennas are respectively arranged in azimuth directions of 0 °, 90 °, 180 °, 270 °, and back tilt angles in the range of 38 ° to 51 ° are respectively set in pitch directions.
3. The four phased array ultra-low elevation cross-airspace tracking multi-target method of claim 2, wherein four of the phased array corner cut arrays are laid out.
4. The four phased array ultra-low elevation cross-space domain tracking multi-target method of claim 3, wherein the beam management module comprises: an angle information calculation unit for generating the angle information, and a weight generation unit for generating the four-matrix weights.
5. The four phased array ultra-low elevation cross-space domain tracking multi-target method of claim 4, wherein in step S6, four phased array antennas are operated simultaneously and cover a full space domain range of elevation above 5 °.
6. A system for the four phased array ultra low elevation cross-airspace tracking multi-target method of any one of claims 1 to 5, comprising:
the phased array antenna is provided with four parts and is uniformly distributed in the azimuth direction;
an operation table generating unit, configured to generate a local operation management table corresponding to the phased array antenna;
a data transmission unit, configured to transmit the local operation management table;
the beam management module is used for generating four-array weight and angle information for controlling the phased array antenna according to the local operation management table;
and the baseband processing module is used for generating tracking auxiliary information for tracking the target according to the local operation management table.
7. The system of four phased array ultra low elevation cross-space domain tracking multi-target method of claim 6, wherein the beam management module comprises: an angle information calculation unit for generating the angle information, and a weight generation unit for generating the four-matrix weights.
8. The system of four phased array ultra low elevation cross-space domain tracking multi-target method of claim 6, wherein the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a time table operating unit, an uplink data processing unit and a data measuring processing unit.
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