CN111864347B - Polarization dynamic matching method of VICTS antenna - Google Patents

Polarization dynamic matching method of VICTS antenna Download PDF

Info

Publication number
CN111864347B
CN111864347B CN202010585916.3A CN202010585916A CN111864347B CN 111864347 B CN111864347 B CN 111864347B CN 202010585916 A CN202010585916 A CN 202010585916A CN 111864347 B CN111864347 B CN 111864347B
Authority
CN
China
Prior art keywords
angle
satellite
victs antenna
polarization
theoretical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010585916.3A
Other languages
Chinese (zh)
Other versions
CN111864347A (en
Inventor
鲁严
黄季甫
尤阳
尤清春
刘祥
杨洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo University
Original Assignee
Ningbo University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo University filed Critical Ningbo University
Priority to CN202010585916.3A priority Critical patent/CN111864347B/en
Publication of CN111864347A publication Critical patent/CN111864347A/en
Application granted granted Critical
Publication of CN111864347B publication Critical patent/CN111864347B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • 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
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention discloses a polarization dynamic matching method of a VICTS antenna, which calculates the theoretical satellite-to-satellite angle of the VICTS antenna to a satellite in a geographic coordinate system and converts the theoretical satellite-to-satellite angle of the VICTS antenna in a carrier coordinate system; according to the theoretical azimuth angle and the theoretical pitch angle of the VICTS antenna in the carrier coordinate system, enabling the wave beam of the VICTS antenna to point to the position corresponding to the theoretical azimuth angle and the theoretical pitch angle of the VICTS antenna to the satellite in the carrier coordinate system, and then adopting variable-step cross scanning to adjust the azimuth angle and the pitch angle of the VICTS antenna to the satellite; positioning a radiation disc of the VICTS antenna to obtain a tangential pitch direction, and then obtaining a rotation angle of a polarization disc of the VICTS antenna by referring to a theoretical polarization angle under a carrier coordinate system; after the polarizing disc rotates according to the rotation angle, the attitude change of the moving carrier is isolated, and the real-time dynamic compensation is carried out on the polarization angle of the satellite by the VICTS antenna; the method has the advantages that the polarization accumulated error is greatly reduced through the beacon AGC value of the satellite, and the fact that the VICTS antenna keeps polarization dynamic matching in the dynamic transformation of the attitude of the mobile carrier is achieved.

Description

Polarization dynamic matching method of VICTS antenna
Technical Field
The invention relates to a communication-in-motion technology, in particular to a polarization dynamic matching method of a VICTS (variable inclination angle continuous section array) antenna.
Background
The VICTS antenna is a novel ultra-low profile antenna, and consists of three non-contact disc rotating parts from bottom to top, namely a feed network layer (namely a feed disc), a radiation layer (namely a radiation disc) and a circularly polarized control layer (namely a polarization disc). The included angle between the feed network layer and the radiation layer can change the azimuth angle and the pitch angle of the wave beam of the VICTS antenna, the azimuth angle and the pitch angle pointing of the wave beam can be realized by rotating the feed network layer and the radiation layer, meanwhile, the polarization mode can be switched by rotating the circularly polarized control layer, so that the relative rotation of the three-layer structure of the VICTS antenna is accurately controlled through the servo system, and the real-time communication with a satellite can be realized.
The VICTS antenna is mainly applied to the technology of communication in motion, the key technology of the communication in motion is how to keep the VICTS antenna installed on a mobile carrier to track satellite beams in real time, and the real-time tracking of the VICTS antenna on the satellite beams can be divided into beam pointing tracking and polarization tracking. The beam pointing tracking ensures that the pointing direction of the beam of the VICTS antenna and the satellite beam can be aligned in real time in the moving process of the mobile carrier; the polarization tracking ensures that the polarization of the VICTS antenna is matched with the polarization of the satellite in real time, and when the polarization of the VICTS antenna is not matched with the polarization of the satellite, the VICTS antenna can only receive partial energy transmitted by the satellite, so that the communication quality is reduced, even the communication is interrupted, and the research on the polarization matching of the satellite communication has great practical value.
The adjustment of the VICTS antenna to the polarization angle is obviously different from the traditional antenna, the feed source structure of the VICTS antenna is fixed, so the polarization angle cannot be adjusted by adjusting the angle of a feed source waveguide port, the polarization direction of the VICTS antenna is determined by the tangential node direction of a radiation layer of the VICTS antenna, and the polarization direction of the VICTS antenna needs to be adjusted according to the relation between beam polarization and the direction of a wire grid in a rotating structure. The traditional polarization direction adjustment mode is open-loop, and after a communication-in-motion system runs for a period of time, polarization errors can be slowly accumulated along with the running of the communication-in-motion system, so that the polarization matching requirement of the VICTS antenna cannot be met.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a polarization dynamic matching method of a VICTS antenna, which dynamically adjusts a polarization angle by monitoring a beacon AGC value of a satellite in real time, greatly reduces polarization accumulated errors, realizes that the VICTS antenna keeps polarization dynamic matching in the attitude dynamic transformation of a mobile carrier, and has quick polarization matching response.
The technical scheme adopted by the invention for solving the technical problems is as follows: a polarization dynamic matching method of a VICTS antenna is characterized by comprising the following steps:
step 1: electrifying a communication-in-motion system arranged on a mobile carrier, and driving a feed tray, a radiation tray and a polarization tray of the VICTS antenna to reset to zero after the communication-in-motion system is electrified; enabling a beacon receiver in the communication-in-motion system to obtain a beacon AGC value of a satellite in real time, and carrying out normalization processing on the beacon AGC value of the satellite obtained in real time to obtain a normalization value of the beacon AGC value of the satellite obtained in real time;
step 2: calculating a theoretical satellite alignment angle of the VICTS antenna to the satellite in the geographic coordinate system, wherein the theoretical satellite alignment angle consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to the satellite in the geographic coordinate system;
and step 3: acquiring an attitude angle of the mobile carrier at the current position of the mobile carrier, wherein the attitude angle comprises a roll angle, a yaw angle and a pitch angle; then, according to the attitude angle of the mobile carrier at the current position, calculating a coordinate transformation matrix of the geographic coordinate system and the carrier coordinate system, and recording the coordinate transformation matrix as
Figure BDA0002554630740000021
Then according to
Figure BDA0002554630740000022
Converting a theoretical satellite angle of the VICTS antenna under a geographic coordinate system to obtain the theoretical satellite angle of the VICTS antenna under a carrier coordinate system, wherein the theoretical satellite angle of the VICTS antenna under the carrier coordinate system consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to a satellite; wherein n denotes a geographical coordinate system, b denotes a carrier coordinate system,
Figure BDA0002554630740000023
has a dimension of 3 × 3;
and 4, step 4: according to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system, a servo motor in the mobile power-on system drives a feed tray and a radiation tray of the VICTS antenna, and then the wave beam of the VICTS antenna points to the position corresponding to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system; then, adopting variable step cross scanning to adjust the azimuth angle and the pitch angle of the satellite of the current VICTS antenna, and finishing the accurate alignment of the wave beam of the VICTS antenna in the azimuth direction and the pitch direction;
and 5: after the precise alignment of the wave beam of the VICTS antenna in the azimuth direction and the elevation direction is finished, the tangential nodal direction of the radiation disc of the VICTS antenna is obtained by positioning the radiation disc of the VICTS antenna; then adjusting the grid angle position of a planar wire grid linear polarizer in a polarization tracking device in a polarization disk of the VICTS antenna according to the tangential pitch direction of a radiation disk of the VICTS antenna and by referring to the theoretical polarization angle of the VICTS antenna to the satellite under a carrier coordinate system, so as to obtain the rotation angle of the polarization disk of the VICTS antenna; then, a servo motor in the mobile communication system drives a polarization disc of the VICTS antenna to rotate according to a rotation angle, and the angle of the rotated polarization disc of the VICTS antenna is defined as a target angle to complete polarization matching;
step 6: after the polarizing disc of the VICTS antenna rotates to a target angle, the attitude change of the mobile carrier is isolated at the same time, and the real-time dynamic compensation is carried out on the polarization angle of the satellite by the VICTS antenna, and the specific process is as follows:
step 6_ 1: reading a normalization value of a beacon AGC value of the satellite obtained in real time, if the normalization value is larger than a set threshold value, determining that a polarizing disc of the VICTS antenna does not need to be rotated, and ending the polarization dynamic matching process; if the normalized value is less than or equal to the set threshold, executing step 6_ 2;
step 6_ 2: step scanning is carried out within the range of +/-5 degrees of the current angle of the polarization disk of the VICTS antenna, the normalization value of the beacon AGC value of the satellite obtained in real time is read in real time after each scanning, if the normalization value is larger than a set threshold value, the polarization disk of the VICTS antenna is rotated to the angle of the satellite obtained in the scanning, the real-time dynamic compensation of the satellite polarization angle of the VICTS antenna is realized, and the polarization dynamic matching process is finished; if the normalization value is less than or equal to the set threshold, continuing step scanning, and returning to the step 3 to continue executing under the condition that the normalization value read in real time after each scanning is not greater than the set threshold after all step scanning within the range of +/-5 degrees is completed; wherein, the value range of the set threshold is [0.75, 0.95], and the step length of step scanning is 0.2-1 deg.
In step 2, the geographic coordinate system is defined as: the centroid of the moving carrier is used as an origin, the X axis points to the east-righting direction, the Y axis points to the north-righting direction, and the Z axis is perpendicular to the X axis and the Y axis and forms a right-hand rectangular coordinate system.
In step 2, the acquisition process of the theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the satellite by the VICTS antenna under the geographic coordinate system is as follows:
step 2_ 1: acquiring longitude of a position of a satellite subsatellite point, and acquiring longitude and latitude of a current position of a mobile carrier;
step 2_ 2: calculating the theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna to the satellite in a geographic coordinate system, correspondingly recording as A, E and V,
Figure BDA0002554630740000031
Figure BDA0002554630740000032
Figure BDA0002554630740000033
wherein the content of the first and second substances,
Figure BDA0002554630740000034
the absolute value of the difference value between the longitude of the current position of the mobile carrier and the longitude of the position of the satellite subsatellite point is shown, and gamma represents the latitude of the current position of the mobile carrier.
In step 3, the process of obtaining the attitude angle of the mobile carrier at the current position thereof is as follows: the attitude information of the mobile carrier at the current position of the mobile carrier is obtained by using an inertial navigation attitude measuring element in the communication-in-motion system, the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier are obtained through attitude calculation, and the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier form the attitude angle of the mobile carrier at the current position of the mobile carrier.
In step 3, the carrier coordinate system is defined as: the center of mass of the moving carrier is used as an origin, the X axis points to the advancing direction of the moving carrier, the Y axis points to the right side of the advancing direction of the moving carrier, and the Z axis points to the right above the moving carrier.
In the step 3, the step of processing the image,
Figure BDA0002554630740000041
wherein θ represents a roll angle of the mobile carrier at the current position, ψ represents a yaw angle of the mobile carrier at the current position, and β represents a pitch angle of the mobile carrier at the current position.
In the step 3, the theoretical polarization angle of the VICTS antenna to the satellite in the carrier coordinate system is represented as P, where P is tan-1(-T1/T2) (ii) a Wherein, T1And T2Are all intermediate variables, T1＝(cos V cos A+sin V sin A sin E)×(sinθcosψ-cosθsinψsinβ)+(-cos V sin A+sin V cos A sin E)×(-sinθsinψ-cosθcosψsinβ)+(-cos E sin V)×(cosθcosβ)，T2The theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna relative to the satellite under the geographic coordinate system are correspondingly represented by A, E and V, and the corresponding theta, psi and beta represent the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier.
Compared with the prior art, the invention has the advantages that:
1) the method of the invention introduces the normalization value of the beacon AGC value of the satellite as the monitoring quantity in the process of carrying out real-time dynamic compensation on the polarization angle of the satellite by the VICTS antenna, thereby realizing a polarization closed loop tracking mode and greatly reducing the polarization accumulated error.
2) The method of the invention can isolate the attitude change of the mobile carrier in time after the polarizing disc of the VICTS antenna rotates to the target angle, thereby realizing that the VICTS antenna keeps the polarization dynamic matching in the attitude dynamic transformation of the mobile carrier.
3) According to the method, in the polarization matching process, the grid angle position of a planar wire grid linear polarizer in a polarization tracking device in the polarization disc of the VICTS antenna is adjusted according to the tangential pitch direction of the radiation disc of the VICTS antenna and by referring to the theoretical polarization angle of the VICTS antenna to the satellite in a carrier coordinate system, so that the polarization matching response is rapid, and the communication-in-motion system is higher in stability.
Drawings
FIG. 1 is a block diagram of an overall implementation of the method of the present invention;
fig. 2 is a block diagram of the flow of implementing real-time dynamic compensation in the method of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The invention provides a polarization dynamic matching method of a VICTS antenna, the general implementation block diagram of which is shown in FIG. 1, and the method comprises the following steps:
step 1: electrifying a communication-in-motion system arranged on a mobile carrier, and driving a feed tray, a radiation tray and a polarization tray of the VICTS antenna to reset to zero after the communication-in-motion system is electrified; enabling a beacon receiver in the communication-in-motion system to obtain a beacon AGC (automatic gain control) value of a satellite in real time, and carrying out normalization processing on the beacon AGC value of the satellite obtained in real time to obtain a normalization value of the beacon AGC value of the satellite obtained in real time; in the embodiment, the beacon receiver in the communication-in-motion system obtains the beacon AGC value of one satellite every 20 ms.
Step 2: and calculating a theoretical satellite alignment angle of the VICTS antenna to the satellite in the geographic coordinate system, wherein the theoretical satellite alignment angle consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to the satellite in the geographic coordinate system.
In this embodiment, in step 2, the geographic coordinate system is defined as: the centroid of the moving carrier is used as an origin, the X axis points to the east-righting direction, the Y axis points to the north-righting direction, and the Z axis is perpendicular to the X axis and the Y axis and forms a right-hand rectangular coordinate system.
In this embodiment, in step 2, the acquisition process of the theoretical azimuth angle, the theoretical pitch angle, and the theoretical polarization angle of the satellite by the VICTS antenna in the geographic coordinate system is as follows:
step 2_ 1: acquiring longitude of a position of a satellite subsatellite point, and acquiring longitude and latitude of a current position of a mobile carrier; the longitude of the position of the satellite sub-satellite point can be obtained by selecting the satellite name of the pair of the VICTS antenna from the monitoring computer; the longitude and the latitude of the current position of the mobile carrier can be obtained through GPS equipment in the communication-in-motion system.
Step 2_ 2: calculating the theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna to the satellite in a geographic coordinate system, correspondingly recording as A, E and V,
Figure BDA0002554630740000051
Figure BDA0002554630740000052
Figure BDA0002554630740000061
wherein the content of the first and second substances,
Figure BDA0002554630740000062
the absolute value of the difference value between the longitude of the current position of the mobile carrier and the longitude of the position of the satellite subsatellite point is shown, and gamma represents the latitude of the current position of the mobile carrier.
And step 3: acquiring an attitude angle of the mobile carrier at the current position of the mobile carrier, wherein the attitude angle comprises a roll angle, a yaw angle and a pitch angle; then, according to the attitude angle of the mobile carrier at the current position, calculating a coordinate transformation matrix of the geographic coordinate system and the carrier coordinate system, and recording the coordinate transformation matrix as
Figure BDA0002554630740000063
Then according to
Figure BDA0002554630740000064
Converting a theoretical satellite angle of the VICTS antenna under a geographic coordinate system to obtain the theoretical satellite angle of the VICTS antenna under a carrier coordinate system, wherein the theoretical satellite angle of the VICTS antenna under the carrier coordinate system consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to a satellite; wherein n denotes a geographical coordinate system, b denotes a carrier coordinate system,
Figure BDA0002554630740000065
has a dimension of 3 x 3.
In this embodiment, in step 3, the process of acquiring the attitude angle of the mobile carrier at the current position thereof is as follows: the attitude information of the mobile carrier at the current position of the mobile carrier is obtained by using an inertial navigation attitude measuring element in the communication-in-motion system, the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier are obtained through attitude calculation, and the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier form the attitude angle of the mobile carrier at the current position of the mobile carrier.
In this embodiment, in step 3, the carrier coordinate system is defined as: the center of mass of the moving carrier is used as an origin, the X axis points to the advancing direction of the moving carrier, the Y axis points to the right side of the advancing direction of the moving carrier, and the Z axis points to the right above the moving carrier.
In this embodiment, in step 3,
Figure BDA0002554630740000066
wherein θ represents a roll angle of the mobile carrier at the current position, ψ represents a yaw angle of the mobile carrier at the current position, and β represents a pitch angle of the mobile carrier at the current position.
In this embodiment, in step 3, the theoretical polarization angle of the VICTS antenna to the satellite in the carrier coordinate system is represented as P, where P is tan-1(-T1/T2) (ii) a Wherein, T1And t2Are all intermediate variables, t1＝(cos V cos A+sin V sin A sin E)×(sinθcosψ-cosθsinψsinβ)+(-cos V sin A+sin V cos A sin E)×(-sinθsinψ-cosθcosψsinβ)+(-cosEsinV)×(cosθcosβ)，T2The theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna relative to the satellite under the geographic coordinate system are correspondingly represented by A, E and V, and the corresponding theta, psi and beta represent the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier.
And 4, step 4: according to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system, a servo motor in the mobile power-on system drives a feed tray and a radiation tray of the VICTS antenna, and then the wave beam of the VICTS antenna points to the position corresponding to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system; and then, the azimuth angle and the pitch angle of the satellite of the current VICTS antenna are adjusted by adopting the existing variable-step cross scanning, and the accurate alignment of the wave beam of the VICTS antenna in the azimuth direction and the pitch direction is completed.
In this embodiment, step-variable cross scanning is performed, that is, a servo motor in a mobile communication system drives a radiation panel and a feed panel of a VICTS antenna, so that a beam of the VICTS antenna performs step scanning within ± 10 ° in an azimuth direction with a current azimuth as a center, a normalization value of a beacon AGC value corresponding to a current step position is stored in a scanning process, and after the scanning is completed, the scanning returns to a corresponding azimuth when the normalization value of the beacon AGC value is maximum in the scanning process; and then step scanning is carried out within the range of +/-5 degrees of pitching by taking the current pitch angle as the center. This process is an existing process.
And 5: after the precise alignment of the wave beam of the VICTS antenna in the azimuth direction and the elevation direction is finished, the tangential nodal direction of the radiation disc of the VICTS antenna is obtained by positioning the radiation disc of the VICTS antenna; then adjusting the grid angle position of a planar wire grid linear polarizer in a polarization tracking device in a polarization disk of the VICTS antenna according to the tangential pitch direction of a radiation disk of the VICTS antenna and by referring to the theoretical polarization angle of the VICTS antenna to the satellite under a carrier coordinate system, so as to obtain the rotation angle of the polarization disk of the VICTS antenna; and then, a servo motor in the mobile communication system drives the polarizing disc of the VICTS antenna to rotate according to the rotation angle, the angle of the rotating polarizing disc of the VICTS antenna is defined as a target angle, and polarization matching is completed.
Step 6: as shown in fig. 2, after the polarizing disc of the VICTS antenna rotates to a target angle, the attitude change of the mobile carrier is isolated at the same time, and the real-time dynamic compensation is performed on the satellite polarization angle of the VICTS antenna, and the specific process is as follows:
step 6_ 1: reading a normalization value of a beacon AGC value of the satellite obtained in real time, if the normalization value is larger than a set threshold value, determining that a polarizing disc of the VICTS antenna does not need to be rotated, and ending the polarization dynamic matching process; and if the normalized value is less than or equal to the set threshold, executing the step 6_ 2.
Step 6_ 2: step scanning is carried out within the range of +/-5 degrees of the current angle of the polarization disk of the VICTS antenna, the normalization value of the beacon AGC value of the satellite obtained in real time is read in real time after each scanning, if the normalization value is larger than a set threshold value, the polarization disk of the VICTS antenna is rotated to the angle of the satellite obtained in the scanning, the real-time dynamic compensation of the satellite polarization angle of the VICTS antenna is realized, and the polarization dynamic matching process is finished; if the normalization value is less than or equal to the set threshold, continuing step scanning, and returning to the step 3 to continue executing under the condition that the normalization value read in real time after each scanning is not greater than the set threshold after all step scanning within the range of +/-5 degrees is completed; wherein, the value range of the set threshold is [0.75, 0.95], if the value of the set threshold is 0.85, the step length of step scanning is 0.2-1 degrees, if the value of the step length is 0.2 degrees.

Claims (7)

1. A polarization dynamic matching method of a VICTS antenna is characterized by comprising the following steps:
step 1: electrifying a communication-in-motion system arranged on a mobile carrier, and driving a VICTS antenna after the communication-in-motion system is electrified, namely resetting a feed tray, a radiation tray and a polarization tray of the variable-inclination-angle continuous section array antenna to zero; enabling a beacon receiver in the communication-in-motion system to obtain a beacon AGC value of a satellite, namely a beacon automatic gain control value, and carrying out normalization processing on the beacon AGC value of the satellite obtained in real time to obtain a normalization value of the beacon AGC value of the satellite obtained in real time;
step 2: calculating a theoretical satellite alignment angle of the VICTS antenna to the satellite in the geographic coordinate system, wherein the theoretical satellite alignment angle consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to the satellite in the geographic coordinate system;
and step 3: acquiring an attitude angle of the mobile carrier at the current position of the mobile carrier, wherein the attitude angle comprises a roll angle, a yaw angle and a pitch angle; then according to the movementCalculating the coordinate transformation matrix of the geographic coordinate system and the carrier coordinate system and recording the coordinate transformation matrix as the attitude angle of the moving carrier at the current position
Figure FDA0002843447450000011
Then according to
Figure FDA0002843447450000012
Converting a theoretical satellite angle of the VICTS antenna under a geographic coordinate system to obtain the theoretical satellite angle of the VICTS antenna under a carrier coordinate system, wherein the theoretical satellite angle of the VICTS antenna under the carrier coordinate system consists of a theoretical azimuth angle, a theoretical pitch angle and a theoretical polarization angle of the VICTS antenna to a satellite; wherein n denotes a geographical coordinate system, b denotes a carrier coordinate system,
Figure FDA0002843447450000013
has a dimension of 3 × 3;
and 4, step 4: according to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system, a servo motor in the mobile power-on system drives a feed tray and a radiation tray of the VICTS antenna, and then the wave beam of the VICTS antenna points to the position corresponding to the theoretical azimuth angle and the theoretical pitch angle of the satellite pair of the VICTS antenna in the carrier coordinate system; then, adopting variable step cross scanning to adjust the azimuth angle and the pitch angle of the satellite of the current VICTS antenna, and finishing the accurate alignment of the wave beam of the VICTS antenna in the azimuth direction and the pitch direction;
and 5: after the precise alignment of the wave beam of the VICTS antenna in the azimuth direction and the elevation direction is finished, the tangential nodal direction of the radiation disc of the VICTS antenna is obtained by positioning the radiation disc of the VICTS antenna; then adjusting the grid angle position of a planar wire grid linear polarizer in a polarization tracking device in a polarization disk of the VICTS antenna according to the tangential pitch direction of a radiation disk of the VICTS antenna and by referring to the theoretical polarization angle of the VICTS antenna to the satellite under a carrier coordinate system, so as to obtain the rotation angle of the polarization disk of the VICTS antenna; then, a servo motor in the mobile communication system drives a polarization disc of the VICTS antenna to rotate according to a rotation angle, and the angle of the rotated polarization disc of the VICTS antenna is defined as a target angle to complete polarization matching;
step 6: after the polarizing disc of the VICTS antenna rotates to a target angle, the attitude change of the mobile carrier is isolated at the same time, and the real-time dynamic compensation is carried out on the polarization angle of the satellite by the VICTS antenna, and the specific process is as follows:
step 6_ 1: reading a normalization value of a beacon AGC value of the satellite obtained in real time, if the normalization value is larger than a set threshold value, determining that a polarizing disc of the VICTS antenna does not need to be rotated, and ending the polarization dynamic matching process; if the normalized value is less than or equal to the set threshold, executing step 6_ 2;
step 6_ 2: step scanning is carried out within the range of +/-5 degrees of the current angle of the polarization disk of the VICTS antenna, the normalization value of the beacon AGC value of the satellite obtained in real time is read in real time after each scanning, if the normalization value is larger than a set threshold value, the polarization disk of the VICTS antenna is rotated to the angle of the satellite obtained in the scanning, the real-time dynamic compensation of the satellite polarization angle of the VICTS antenna is realized, and the polarization dynamic matching process is finished; if the normalization value is less than or equal to the set threshold, continuing step scanning, and returning to the step 3 to continue executing under the condition that the normalization value read in real time after each scanning is not greater than the set threshold after all step scanning within the range of +/-5 degrees is completed; wherein, the value range of the set threshold is [0.75, 0.95], and the step length of step scanning is 0.2-1 deg.
2. The dynamic polarization matching method for VICTS antenna as claimed in claim 1, wherein in step 2, the geographic coordinate system is defined as: the centroid of the moving carrier is used as an origin, the X axis points to the east-righting direction, the Y axis points to the north-righting direction, and the Z axis is perpendicular to the X axis and the Y axis and forms a right-hand rectangular coordinate system.
3. The dynamic polarization matching method for a VICTS antenna according to claim 2, wherein in step 2, the acquisition process of the theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna to the satellite in the geographic coordinate system is as follows:
step 2_ 1: acquiring longitude of a position of a satellite subsatellite point, and acquiring longitude and latitude of a current position of a mobile carrier;
step 2_ 2: calculating the theoretical azimuth angle, the theoretical pitch angle and the theoretical polarization angle of the VICTS antenna to the satellite in a geographic coordinate system, correspondingly recording as A, E and V,
Figure FDA0002843447450000021
Figure FDA0002843447450000022
Figure FDA0002843447450000023
wherein the content of the first and second substances,
Figure FDA0002843447450000024
the absolute value of the difference value between the longitude of the current position of the mobile carrier and the longitude of the position of the satellite subsatellite point is shown, and gamma represents the latitude of the current position of the mobile carrier.
4. A dynamic polarization matching method for a VICTS antenna as claimed in any one of claims 1 to 3, wherein in step 3, the process of obtaining the attitude angle of the mobile carrier at the current position thereof is: the attitude information of the mobile carrier at the current position of the mobile carrier is obtained by using an inertial navigation attitude measuring element in the communication-in-motion system, the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier are obtained through attitude calculation, and the roll angle, the yaw angle and the pitch angle of the mobile carrier at the current position of the mobile carrier form the attitude angle of the mobile carrier at the current position of the mobile carrier.
5. The dynamic polarization matching method of VICTS antenna as claimed in claim 4, wherein in step 3, the carrier coordinate system is defined as: the center of mass of the moving carrier is used as an origin, the X axis points to the advancing direction of the moving carrier, the Y axis points to the right side of the advancing direction of the moving carrier, and the Z axis points to the right above the moving carrier.
6. The dynamic polarization matching method of VICTS antenna as claimed in claim 5, wherein in step 3,
Figure FDA0002843447450000031
wherein θ represents a roll angle of the mobile carrier at the current position, ψ represents a yaw angle of the mobile carrier at the current position, and β represents a pitch angle of the mobile carrier at the current position.
7. The method as claimed in claim 6, wherein in step 3, the theoretical polarization angle of the VICTS antenna to the satellite in the carrier coordinate system is denoted as P, P ═ tan-1(-T1/T2) (ii) a Wherein, T1And T2Are all intermediate variables, T1＝(cosV cosA+sinV sinA sinE)×(sinθcosψ-cosθsinψsinβ)+(-cosV sinA+sinV cosA sinE)×(-sinθsinψ-cosθcosψsinβ)+(-cosE sinV)×(cosθcosβ)，T2The directions of A, E and V correspond to theoretical azimuth angle, theoretical pitch angle and theoretical polarization angle of the VICTS antenna relative to the satellite under the geographic coordinate system, and theta, psi and beta correspond to roll angle, yaw angle and pitch angle of the mobile carrier at the current position of the mobile carrier.
CN202010585916.3A 2020-06-24 2020-06-24 Polarization dynamic matching method of VICTS antenna Active CN111864347B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010585916.3A CN111864347B (en) 2020-06-24 2020-06-24 Polarization dynamic matching method of VICTS antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010585916.3A CN111864347B (en) 2020-06-24 2020-06-24 Polarization dynamic matching method of VICTS antenna

Publications (2)

Publication Number Publication Date
CN111864347A CN111864347A (en) 2020-10-30
CN111864347B true CN111864347B (en) 2021-04-13

Family

ID=72989476

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010585916.3A Active CN111864347B (en) 2020-06-24 2020-06-24 Polarization dynamic matching method of VICTS antenna

Country Status (1)

Country Link
CN (1) CN111864347B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112649817A (en) * 2020-12-04 2021-04-13 中国科学院国家空间科学中心 Automatic tracking device and method for satellite communication of offshore buoy
CN113701753B (en) * 2021-08-30 2024-05-07 西安大衡天成信息科技有限公司 Phased array antenna-based positioning and orientation device and method
CN115580331A (en) * 2022-08-29 2023-01-06 中国电子科技集团公司第二十九研究所 Phase scanning antenna polarization matching method, device, equipment and medium
CN116679327A (en) * 2023-04-20 2023-09-01 西安恒达微波技术开发有限公司 Antenna feed opportunistic electric axis calibration method based on fixed satellite

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913790A (en) * 2015-05-28 2015-09-16 北京航天控制仪器研究所 Heading drift error closed-loop compensation method applied to communication-in-moving inertial navigation system
CN105045298A (en) * 2015-08-04 2015-11-11 北京航天控制仪器研究所 Communication-in-moving antenna tracking control method based on inertial navigation system measurement lagging
CN107579759A (en) * 2017-09-19 2018-01-12 清华大学 The antihunt means and device of antenna beam in a kind of unmanned plane satellite communication system
CN109254272A (en) * 2018-09-27 2019-01-22 中国人民解放军空军工程大学 A kind of bidimensional angle estimating method of concurrent formula polarization MIMO radar

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102662188A (en) * 2012-04-11 2012-09-12 北京星网宇达科技股份有限公司 Initializing method of mobile satellite communication antenna
CN106654531B (en) * 2016-10-20 2020-03-31 西安坤蓝电子技术有限公司 Satellite capturing method for shipborne VSAT antenna system
CN108197362B (en) * 2017-12-23 2019-09-27 中国人民解放军战略支援部队信息工程大学 VICTS antenna radiation pattern and beam position quick calculation method
CN108322277B (en) * 2018-04-04 2021-01-12 宁波大学 Frequency spectrum sensing method based on inverse eigenvalue of covariance matrix
CN109657195B (en) * 2018-11-20 2020-05-05 中国人民解放军战略支援部队信息工程大学 VICTS antenna polarization matching method
CN111129694B (en) * 2019-12-06 2021-01-12 宁波大学 Assembly structure of VICTS phased array panel array antenna

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913790A (en) * 2015-05-28 2015-09-16 北京航天控制仪器研究所 Heading drift error closed-loop compensation method applied to communication-in-moving inertial navigation system
CN105045298A (en) * 2015-08-04 2015-11-11 北京航天控制仪器研究所 Communication-in-moving antenna tracking control method based on inertial navigation system measurement lagging
CN107579759A (en) * 2017-09-19 2018-01-12 清华大学 The antihunt means and device of antenna beam in a kind of unmanned plane satellite communication system
CN109254272A (en) * 2018-09-27 2019-01-22 中国人民解放军空军工程大学 A kind of bidimensional angle estimating method of concurrent formula polarization MIMO radar

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"基于连续切向节的毫米波波束扫描平板";尤阳;《中国优秀硕士学位论文全文库 科技信息辑》;20200615;全文 *

Also Published As

Publication number Publication date
CN111864347A (en) 2020-10-30

Similar Documents

Publication Publication Date Title
CN111864347B (en) Polarization dynamic matching method of VICTS antenna
CN111864348B (en) Initial satellite finding method of VICTS antenna
CN101916915B (en) Antenna beam tracking device and method of moving communication satellite communication system
CN108493610B (en) Automatic satellite alignment method and device for phased array antenna
CN201773946U (en) Antenna beam tracking apparatus of satellite communication system realizing communication in motion
CN106410410B (en) A kind of VSAT antenna system satellite capture tracking with physics levelling bench
CN113701753B (en) Phased array antenna-based positioning and orientation device and method
CN102680953B (en) Ground phase-correcting method for double-channel tracking system
CN104596503B (en) Tracking table based on differential satellite navigation measurement determines appearance and instruction compensation method
CN102662188A (en) Initializing method of mobile satellite communication antenna
CN106597393A (en) Spaceborne microwave optical compound tracking and pointing radar on-orbit calibration system and method
CN112649817A (en) Automatic tracking device and method for satellite communication of offshore buoy
CN113097719B (en) Communication satellite tracking method for one-dimensional phased array antenna
CN106329122A (en) SCIM (satellite communication in motion) plate array antenna tracking device and method
US11962395B1 (en) Whole-airspace satellite search method and device based on phased array antenna
CN112013832B (en) Adaptive satellite tracking method for VICTS antenna
CN103913163A (en) Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station
CN101226058A (en) Method for implementing satellite side-sway automotive image live transmission
CN105116430A (en) SOTM pseudo course sea ship dynamic satellite searching method based on Kalman filtering
CN106654531A (en) Shipborne VSAT antenna system satellite capturing method
CN111913497A (en) VICTS receiving antenna servo control system
CN106329120A (en) Sitcom On-the-Move (SOTM) low-cost measurement and control method
CN111427001A (en) Target positioning method suitable for pointing satellite by ground survey station antenna
CN109657195A (en) A kind of VICTS antenna polarization matching algorithm
CN111337055B (en) Calibration method for satellite mobile communication antenna inertial navigation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant