CN111929675A - Four-phased array ultra-low elevation cross-airspace tracking multi-target method and system - Google Patents
Four-phased array ultra-low elevation cross-airspace tracking multi-target method and system Download PDFInfo
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- CN111929675A CN111929675A CN202010621204.2A CN202010621204A CN111929675A CN 111929675 A CN111929675 A CN 111929675A CN 202010621204 A CN202010621204 A CN 202010621204A CN 111929675 A CN111929675 A CN 111929675A
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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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Abstract
The invention relates to a four-phase control array ultra-low elevation angle cross-airspace multi-target tracking method and a 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 generating unit according to the tracked track information of the plurality of targets; s3, respectively transmitting the local operation management table to a beam management module and a baseband processing module by adopting a data transmission unit; 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; and 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 the corner cut array layout, the side lobe suppression of the array is improved, and the four-phase array is wider in elevation coverage.
Description
Technical Field
The invention relates to the technical field of phased array antenna tracking, in particular to a four-phased array ultralow elevation cross-airspace multi-target tracking method and system.
Background
The phased array antenna multi-target tracking technology has the advantages of high control precision, high response speed, wide 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. The single phased array is limited in the coverage range of antenna beams of the array elements, and the working elevation angle is large under the general condition, so that the coverage of an airspace is small. Due to the characteristics, the single phased array antenna has natural limitation when tracking multiple targets in a full airspace, is difficult to work in a wider elevation angle coverage range, and generally the single phased array is difficult to meet the requirement of realizing the multiple targets in the cross-airspace tracking within a wider pitch angle range.
Disclosure of Invention
The invention aims to provide a four-phased array ultralow elevation cross-airspace multi-target tracking method and system, and solves the problem of high working elevation of a phased array antenna.
In order to achieve the above object, the present invention provides a four-phased array ultra-low elevation cross-airspace multi-target tracking 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 generating unit according to the tracked track information of the plurality of targets;
s3, respectively transmitting the local operation management table to a beam management module and a baseband processing module by adopting a data transmission unit;
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;
and 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 an aspect of the present invention, in step S1, four phased array antennas are arranged in azimuth directions of 0 °, 90 °, 180 °, and 270 °, respectively, and back tilt angles in a range of 38 ° to 51 ° are set in a pitch direction, respectively.
According to one aspect of the invention, four of the phased array corner cut arrays are laid out.
According to an aspect of the invention, the local operation management table includes: four sets of timetables, routing tables, configuration tables, uplink data and long-term forecast almanacs;
the time schedule specifies the transceiving time slots of the system operation in each hour;
the routing table specifies the routing relationships, i.e. data transmission paths, of the objects visible per hour. Which is used in one-to-one correspondence with the transceiving time slots specified by the schedule;
the configuration table shows whether the target visible in each time slot opens a data transceiving channel.
According to an 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 weight.
According to an aspect of the invention, the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a schedule operating unit, an uplink data processing unit and a data measurement processing unit;
the target, the beam management module and the baseband processing module operate according to the transceiving time slot specified by the time schedule to complete satellite-ground link 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 tables, and when the states of all the local operation management tables are consistent with each other in data sending and receiving, the beam management module, the baseband processing module and the targets realize chain building and are used for configuring four phased array antennas in an operation time slot to perform multi-target tracking; and when the states of all the local operation management tables are in accordance with each other, the phased array antenna is matched with the target in the transceiving time slot specified by the time table, the data transmission path specified by the routing table is matched with the transceiving relation specified by the time table, and the data transceiving channel specified by the configuration table is opened.
According to one aspect of the present invention, in step S6, four phased array antennas are simultaneously operated to cover the entire spatial range with an elevation angle of 5 ° or more.
In order to achieve the above object, the present invention provides a system for tracking multiple targets across airspace in an ultra-low elevation angle of a four-phased array, including:
the phased array antenna is provided with four parts which are uniformly distributed in the azimuth direction;
an operation table generating unit for generating a local operation management table corresponding to the phased array antenna;
the data transmission unit is used for transmitting 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 an 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 weight.
According to an aspect of the invention, the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a schedule running unit, an uplink data processing unit and a data measurement processing unit.
According to the scheme, by arranging the corner cutting array of the four phased array antennas, the sidelobe suppression of the phased array is greatly improved; in addition, the four-phased array has wider elevation coverage by controlling the inclination angle of the phased array antenna, and the maximum elevation coverage can reach more than 5 degrees.
According to one scheme of the invention, the four phased array arrays are subjected to multi-target tracking, the four phased array arrays are placed in an inclined way of 45 degrees and respectively take charge of 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, on the premise of not influencing the gain of the array, the sidelobe suppression of the corner cut array layout is about 6dB lower than that of a square array surface, and the antenna gains of the four phased array corner cut 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 range, and well inhibit the side lobe of the antenna.
Drawings
FIG. 1 is a block diagram schematically illustrating the steps of a four-phased array ultra-low elevation cross-airspace multi-target tracking method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a system architecture for tracking multiple targets across airspace at a four-phased array ultra-low elevation according to an embodiment of the present 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 used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated 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, the method for tracking multiple targets across airspace by using a four-phase control array with ultra-low elevation angle 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 generating unit according to the tracked track information of the plurality of targets;
s3, respectively transmitting the local operation management table to the beam management module and the baseband processing module by adopting a data transmission unit;
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;
and 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, the four phased array antennas are respectively arranged in azimuth directions of 0 °, 90 °, 180 °, and 270 °, and the tilt directions are respectively set with back tilt angles in the range of 38 ° to 51 °. In the present embodiment, a 45 ° caster angle is optionally set in the pitch direction. In the present embodiment, four phased array corner cut arrays are arranged.
As shown in fig. 2, according to an embodiment of the present invention, the local run management table includes: four sets of timetables, routing tables, configuration tables, uplink data, and long-term forecasting almanac. In the present embodiment, the operation table generation unit generates the local operation management table for 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 specifies the transmit-receive time slots in which the system operates per hour; the routing table specifies the routing relation of the targets visible in each hour, namely data transmission paths, which are used in one-to-one correspondence with the transceiving time slots specified by the time table; and a configuration table shows whether the target visible in each time slot opens a data transceiving channel.
As shown in fig. 2, according to an embodiment of the present invention, the beam management module includes: the device comprises an angle information calculation unit for generating angle information and a weight value generation unit for generating a four-array weight value.
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 schedule running unit, an uplink data processing unit and a data measurement processing unit. In the embodiment, the tracked target, the beam management module and the baseband processing module operate according to the transceiving time slot specified by the time schedule to complete satellite-ground link 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, when all the local operation management tables are in accordance with each other in state during data sending and receiving, namely the phased array antenna is matched with a receiving and sending time slot specified by a tracked target time table, a data transmission path specified by a routing table is matched with a receiving and sending relation specified by the time table, and a data receiving and sending channel specified by a configuration table is opened, the beam management module and the baseband processing module are linked with the tracked target, and the beam management module and the baseband processing module are used for configuring four phased array antennas in the operation time slot to carry out multi-target tracking.
According to one embodiment of the present invention, in step S6, the four phased array antennas are simultaneously operated to cover the entire spatial range with an elevation angle of 5 ° or more.
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 multi-target tracking method includes: phased array antenna 110, operation table generation unit 101, data transmission unit 102, beam management module 103, and baseband processing module 104. In the present embodiment, the phased array antenna is provided with four portions (i.e., phased array antenna a, phased array antenna B, phased array antenna C, and phased array antenna D in the figure) and is uniformly distributed in the azimuth direction, specifically, the phased array antenna is arranged in the azimuth directions of 0 °, 90 °, 180 °, and 270 °, respectively, with the array surface facing outward and the pitch direction being a 45 ° back tilt angle. The operation table generation unit 101 is configured to generate a local operation management table corresponding to the 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 an embodiment of the present invention, the beam management module 103 includes: an angle information calculation unit 1031 for generating angle information, and a weight value generation unit 1032 for generating a four-matrix weight value.
As shown in fig. 2, according to an embodiment of the present invention, the baseband processing module 104 includes: a baseband processing unit 1041, a tracking auxiliary 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 data required for its tracking operation.
The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A four-phase control array ultra-low elevation angle cross-airspace multi-target tracking 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 generating unit according to the tracked track information of the plurality of targets;
s3, respectively transmitting the local operation management table to a beam management module and a baseband processing module by adopting a data transmission unit;
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;
and 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.
2. The method for tracking multiple targets across airspace according to the four-phased array with ultra-low elevation angle of claim 1, wherein in step S1, the four phased array antennas are respectively arranged in azimuth directions of 0 °, 90 °, 180 °, and 270 °, and the tilt angles in the range of 38 ° to 51 ° are respectively set in the pitch directions.
3. The four-phased array ultra-low elevation cross-airspace multi-target tracking method according to claim 2, wherein four phased array corner cut arrays are arranged.
4. The four-phased array ultra-low elevation cross-airspace tracking multi-target method according to any one of claims 1 to 3, wherein the local operation management table comprises: four sets of timetables, routing tables, configuration tables, uplink data and long-term forecast almanacs;
the time schedule specifies the transceiving time slots of the system operation in each hour;
the routing table specifies the routing relationships, i.e. data transmission paths, of the objects visible per hour. Which is used in one-to-one correspondence with the transceiving time slots specified by the schedule;
the configuration table shows whether the target visible in each time slot opens a data transceiving channel.
5. The four-phased array ultra-low elevation cross-airspace multi-target tracking method according to 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 weight.
6. The four-phased array ultra-low elevation cross-airspace multi-target tracking method according to claim 5, wherein the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a schedule operating unit, an uplink data processing unit and a data measurement processing unit;
the target, the beam management module and the baseband processing module operate according to the transceiving time slot specified by the time schedule to complete satellite-ground link 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 tables, and when the states of all the local operation management tables are consistent with each other in data sending and receiving, the beam management module, the baseband processing module and the targets realize chain building and are used for configuring four phased array antennas in an operation time slot to perform multi-target tracking; and when the states of all the local operation management tables are in accordance with each other, the phased array antenna is matched with the target in the transceiving time slot specified by the time table, the data transmission path specified by the routing table is matched with the transceiving relation specified by the time table, and the data transceiving channel specified by the configuration table is opened.
7. The method for tracking multiple targets across airspace at ultralow elevation angle of the four-phased array according to claim 6, wherein in step S6, the four phased array antennas work simultaneously and cover the full airspace range with an elevation angle of more than 5 °.
8. A system for the four-phased array ultra-low elevation cross-airspace multi-target tracking method according to any one of claims 1 to 7, comprising:
the phased array antenna is provided with four parts which are uniformly distributed in the azimuth direction;
an operation table generating unit for generating a local operation management table corresponding to the phased array antenna;
the data transmission unit is used for transmitting 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.
9. The four-phased array ultra-low elevation cross-airspace multi-target tracking method according to claim 8, 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 weight.
10. The four-phased array ultra-low elevation cross-airspace multi-target tracking method according to claim 8, wherein the baseband processing module comprises: the device comprises a baseband processing unit, a tracking auxiliary information calculating unit, a schedule running unit, an uplink data processing unit and a data measurement processing unit.
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