CN112290217B - Synchronous switching method for wave beams of satellite communication phased array antenna - Google Patents
Synchronous switching method for wave beams of satellite communication phased array antenna Download PDFInfo
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- CN112290217B CN112290217B CN202010919995.7A CN202010919995A CN112290217B CN 112290217 B CN112290217 B CN 112290217B CN 202010919995 A CN202010919995 A CN 202010919995A CN 112290217 B CN112290217 B CN 112290217B
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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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 discloses a synchronous switching method of a satellite communication phased array antenna beam. The antenna angle receiving module is used for receiving phased array antenna beam angle information, the channel resolving and binding module is used for resolving and binding amplitude phase information of the T/R chip and then changing the state of antenna switching signals to transmit the antenna switching signals to the beam control module, and the communication time sequence control module is used for generating communication time sequence control signals according to the communication state to transmit the communication time sequence control signals to the beam control module. And the beam control module monitors the state of the communication time sequence control signal after the state of the antenna switching signal is changed, and generates a beam switching signal to control the antenna beam switching. The method can effectively realize synchronous switching of the wave beams of the phased array antenna for satellite communication.
Description
Technical Field
The invention relates to a phased array antenna beam synchronous switching method, in particular to a satellite communication phased array antenna beam synchronous switching method.
Background
With the development of the low-orbit satellite Internet, the phased array antenna can rapidly realize the beam steering of a large angle to realize different satellite tracking by virtue of the advantages of two-dimensional electronic scanning, and gradually becomes a main form of a satellite communication terminal antenna. After the phased array antenna receives the antenna angle information, firstly, amplitude and phase information of a channel are calculated, then the amplitude and phase information is transmitted to all phased array T/R chips, and finally, beam switching is carried out under a unified beam control signal, wherein the switching process is approximately 100 ns. If the beam control signal and the communication protection time sequence cannot be synchronized, the phased array antenna is caused to switch the beam in the communication data transmission time, communication signals are interrupted in the switching process, and particularly, in a broadband satellite communication system, a large amount of communication data error codes are caused, so that satellite communication performance is reduced.
Disclosure of Invention
The invention aims to provide a phased array antenna beam synchronous switching method which solves the problem of synchronous switching of the satellite communication phased array antenna beam.
In order to achieve the above purpose, the present invention provides a method for synchronously switching beams of a phased array antenna for satellite communication, which comprises the following specific steps: firstly, constructing a phased array antenna beam synchronous switching system, wherein the phased array antenna beam synchronous switching system comprises: the device comprises an antenna angle receiving module, a channel data resolving and binding module, a communication time sequence control module and a beam control module. And secondly, the antenna angle receiving module receives phased array antenna beam angle information. And thirdly, the channel data resolving and binding module completes resolving and data binding of the amplitude phase information. Fourth, the communication time sequence control module generates a communication time sequence control signal. Fifth, the beam control module generates a beam control signal: the beam control module samples that the antenna angle switching signal has a falling edge, and after the signal width is 5 clock cycles, the communication time sequence control signal is detected, if the signal is low level and represents that the communication time sequence is in a protection interval or no signal transmission, the beam control signal is generated to a T/R chip, the T/R chip executes amplitude phase data stored in a register under the beam control signal, and the phased array antenna beam is switched; if the beam control module detects that the communication time sequence control signal is in a high level, representing that satellite communication data is being transmitted; the wave beam control module continuously monitors the level of the communication time sequence control signal, generates a wave beam control signal to the T/R chip after the level is changed into a low level, and the T/R chip executes the amplitude phase data stored in the register under the wave beam control signal to switch the wave beam of the phased array antenna.
Further, the phased array antenna beam synchronous switching system comprises: the device comprises an antenna angle receiving module, a channel data resolving and binding module, a communication time sequence control module and a beam control module; the antenna angle receiving module has the functions of: receiving phased array antenna beam angle information; the channel data resolving and binding module has the functions that: the amplitude phase information of the T/R chip is calculated and bound; the communication time sequence control module has the functions that: generating a communication timing control signal; the beam control module functions as: a beam steering signal is generated.
Further, in the second step, the antenna angle receiving module receives an external angle information input to the phased array antenna, and then sends the angle information to the channel resolving bookbinding module.
Further, the channel-resolving bookbinding module resolves amplitude-phase data of the T/R chip.
Further, after the calculation is completed, the amplitude phase data is transmitted to an amplitude phase register inside the T/R chip. And after the T/R chip receives the data, a channel completion instruction is sent to the channel calculation binding module.
Further, after the channel resolving and binding module receives the channel completing instruction, the antenna angle switching signal transmitted to the beam control module is changed from high level to low level, and is changed into high level after lasting 50 clock cycles.
Further, in the fourth step, the communication timing control module generates a communication timing control signal according to the communication data decoding status and sends the communication timing control signal to the beam control module.
Further, the high level of the communication timing control signal indicates that satellite communication data is being transmitted, and the low level of the communication timing control signal indicates that the communication timing is at a guard interval or no satellite communication data is being transmitted.
By applying the technical scheme of the invention, the real-time detection of satellite communication data can be realized, so that the synchronous switching of the wave beams of the satellite communication phased array antenna can be realized, and the hysteresis condition in the prior art can not occur. The technical scheme of the invention effectively solves the problem of synchronous switching of the wave beams of the satellite communication phased array antenna in the prior art.
Drawings
FIG. 1 is a method for synchronously switching beams of a satellite communication phased array antenna
1. Antenna angle receiving module 2, channel data resolving and binding module 3, communication time sequence control module
4. Beam control module
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The method for synchronously switching the wave beams of the phased array antenna for satellite communication comprises the following specific steps:
first step, constructing a phased array antenna beam synchronous switching system
A phased array antenna beam synchronized switching system comprising: the device comprises an antenna angle receiving module, a channel data resolving and binding module, a communication time sequence control module and a beam control module.
The antenna angle receiving module has the functions of: receiving phased array antenna beam angle information;
the channel data resolving and binding module has the functions that: the amplitude phase information of the T/R chip is calculated and bound;
the communication time sequence control module has the functions that: generating a communication timing control signal;
the beam control module functions as: a beam steering signal is generated.
The second step of antenna angle receiving module receives phased array antenna beam angle information
The antenna angle receiving module receives external angle information input to the phased array antenna, and then sends the angle information to the channel resolving and binding module.
The third step of channel data resolving and binding module completes resolving and data binding of amplitude phase information
The channel resolving binding module resolves amplitude phase data of the T/R chip. And after the calculation is completed, transmitting the amplitude phase data to an amplitude phase register in the T/R chip. And after the T/R chip receives the data, a channel completion instruction is sent to the channel calculation binding module. After the channel resolving and binding module receives the channel completing instruction, the antenna angle switching signal transmitted to the beam control module is changed from high level to low level for more than 2 clock cycles, and 50 clock cycles are recommended for avoiding misjudgment caused by interference.
The fourth step of communication time sequence control module generates a communication time sequence control signal
In order to avoid switching of the phased array antenna in the communication process, the method introduces an indication of a communication time sequence state and provides a precondition for subsequent signal synchronization. The specific process is as follows: when the communication time sequence control module decodes communication data, a communication time sequence control signal is generated according to the decoding state and is sent to the beam control module. The high level of the communication time sequence control signal indicates that satellite communication data is being transmitted, and the low level of the communication time sequence control signal indicates that the communication time sequence is in a protection interval or no satellite communication data is transmitted.
The fifth step of the beam control module generating a beam control signal
After the beam control module obtains the antenna angle switching signal and the communication time sequence control signal, a precondition is provided for synchronous switching of the phased array antenna. In a satellite communication system, data is divided into data frames in a communication protocol, a protection time slot delta T is set between two groups of data frames, and the period of the data frames is T1, so that the period T1 of a communication time sequence control signal generated by a communication time sequence control module, wherein the low level length of the period T1 is delta T, and the low level length can be used for switching antenna beams. In order to ensure that the phased array antenna continuously tracks satellite beams under a motion platform, the beam angle of the antenna needs to be frequently changed for tracking satellites, and the antenna angle switching signal period is T2. In order to ensure that the phased array antenna does not affect satellite signal communication, synchronization of communication time sequence control signals and antenna angle switching signals is required to be strictly performed. The specific process is as follows: when the beam control module samples that the antenna angle switching signal has a falling edge, in order to avoid misjudgment caused by interference, the antenna angle switching signal simultaneously makes a width judgment, the width must be more than 2 clock cycles, and 5 clock cycles are recommended. After the condition is met, the beam control module detects a communication time sequence control signal, if the communication time sequence is represented by a low level and is in a protection interval or no signal transmission, the beam control signal is generated to a T/R chip, and the T/R chip executes amplitude phase data stored in a register under the beam control signal to switch the phased array antenna beam. If the beam control module detects that the communication timing control signal is high, it represents that satellite communication data is being transmitted. The wave beam control module continuously monitors the level of the communication time sequence control signal, generates a wave beam control signal to the T/R chip after the level is changed into a low level, and the T/R chip executes the amplitude phase data stored in the register under the wave beam control signal to switch the wave beam of the phased array antenna.
Thus, the synchronous switching of the wave beams of the phased array antenna is completed, and the loss of signals in the broadband satellite communication process is avoided.
The above description is only of the preferred embodiments 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 (7)
1. A synchronous switching method of a satellite communication phased array antenna wave beam is characterized by comprising the following specific steps:
firstly, constructing a phased array antenna beam synchronous switching system;
a phased array antenna beam synchronized switching system comprising: the device comprises an antenna angle receiving module, a channel data resolving and binding module, a communication time sequence control module and a beam control module;
the second step of the antenna angle receiving module receives phased array antenna beam angle information;
the third step, the channel data resolving and binding module completes resolving and data binding of amplitude phase information;
a fourth step of the communication time sequence control module generating a communication time sequence control signal;
a fifth step of generating a beam control signal by the beam control module;
when the beam control module samples that the antenna angle switching signal has a falling edge and the signal width is 5 clock cycles, detecting a communication time sequence control signal, if the communication time sequence is represented by a low level and is in a protection interval or no signal transmission, generating a beam control signal to a T/R chip, executing amplitude phase data stored by a register by the T/R chip under the beam control signal, and switching phased array antenna beams; if the beam control module detects that the communication time sequence control signal is in a high level, representing that satellite communication data is being transmitted; the wave beam control module continuously monitors the level of the communication time sequence control signal, generates a wave beam control signal to the T/R chip after the level is changed into a low level, and the T/R chip executes the amplitude phase data stored in the register under the wave beam control signal to switch the wave beam of the phased array antenna.
2. The method for beam synchronized switching of a satellite communication phased array antenna of claim 1,
the antenna angle receiving module has the functions of: receiving phased array antenna beam angle information;
the channel data resolving and binding module has the functions that: the amplitude phase information of the T/R chip is calculated and bound;
the communication time sequence control module has the functions that: generating a communication timing control signal;
the beam control module functions as: a beam steering signal is generated.
3. The method according to claim 1, wherein in the second step, the antenna angle receiving module receives an external angle information input to the phased array antenna, and then sends the angle information to the channel-resolving bookbinding module.
4. The method for beam synchronization switching of a satellite communication phased array antenna of claim 1, wherein the channel resolving bookbinding module resolves amplitude phase data of the T/R chip.
5. The method for beam synchronization switching of a satellite communication phased array antenna according to claim 4, wherein the amplitude phase data is transmitted to an amplitude phase register inside the T/R chip after the completion of the calculation; and after the T/R chip receives the data, a channel completion instruction is sent to the channel calculation binding module.
6. The method according to claim 5, wherein the channel resolving bookbinding module changes the antenna angle switching signal transmitted to the beam control module from high level to low level after receiving the channel completion command, and changes the antenna angle switching signal to high level after lasting 50 clock cycles.
7. The method for beam synchronization switching of a satellite communication phased array antenna according to claim 1, wherein in the fourth step, the communication timing control module generates a communication timing control signal according to a communication data decoding status and transmits the communication timing control signal to the beam control module.
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