CN113726407B - Control method and device based on satellite autonomous control beam burst-by-burst agility - Google Patents
Control method and device based on satellite autonomous control beam burst-by-burst agility Download PDFInfo
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- CN113726407B CN113726407B CN202110980960.9A CN202110980960A CN113726407B CN 113726407 B CN113726407 B CN 113726407B CN 202110980960 A CN202110980960 A CN 202110980960A CN 113726407 B CN113726407 B CN 113726407B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
Abstract
The invention discloses a control method and a control device based on satellite autonomous control wave beam sudden and rapid change, and relates to the field of satellite communication systems. The invention is composed of a phased array wave beam agility control module, a satellite-borne demodulation module, a satellite-borne modulation module, a phased array antenna module and a ground user, completes the on-satellite autonomous control, the synchronization of a satellite-to-ground system, the synchronization of the transmitting wave beam of the phased array antenna and the transmitting signal of the satellite-borne, and the synchronization of the receiving wave beam of the phased array antenna and the transmitting signal of the ground user, and meets the requirement of user communication. The invention is particularly suitable for satellite communication systems with wide communication range and is also particularly suitable for low-orbit satellite communication systems.
Description
Technical Field
The invention relates to a control method and a device for burst-by-burst agility based on an on-satellite autonomous control wave beam, which can be used for switching an on-satellite autonomous control phased array wave beam according to bursts, can complete the synchronization process of a satellite-ground communication system, can also be used for service communication in a wide area range, and belongs to the field of satellite communication.
Background
The traditional satellite communication is composed of spot beams and wide beams, the spot beams are small in coverage area, low in transmitting power, large in coverage area of the wide beams, high in transmitting power, and obvious in advantages and disadvantages of the spot beams and the wide beams. By changing the beam direction of the phased array antenna and multiplexing the spot beams in a time-sharing manner, the coverage area of the spot beams can be improved. A control method for controlling time-division multiplexing of beams is needed, so that spot beams can reach the coverage range of wide beams, the power consumption of a satellite is reduced, the energy of the satellite is saved, and the service life of the satellite is prolonged.
Disclosure of Invention
The invention aims to solve the technical problem of avoiding the defects in the prior art and provides a wave beam burst-by-burst agility control method and device based on-satellite autonomous control.
The technical scheme adopted by the invention is as follows:
a control method based on satellite autonomous control wave beam sudden and rapid change comprises the following steps:
(1) uplink agility information and downlink agility information are generated on the satellite, downlink baseband data are received and converted into downlink burst signals, the downlink burst signals and the switching time of the transmitting wave beams of the phased-array antenna are synchronously controlled by using the downlink agility information, and downlink wireless burst signals are generated and sent to a ground user;
(2) the ground user receives the downlink wireless burst signal, completes timing control and sends the uplink wireless burst signal to the satellite according to the timing control;
(3) and the satellite performs beam pointing control according to the uplink agility information to complete synchronous control of the switching time of transmitting uplink wireless burst signals by the ground user and receiving beams by the phased array antenna.
The step (1) of using the downlink agility information to complete the synchronous control of the downlink burst signal and the switching time of the transmitting wave beam of the phased array antenna comprises the following specific processes:
(101) generating a modulation control instruction according to the downlink agility information, and converting downlink baseband data into a downlink burst signal which changes burst by burst according to the control instruction at a specified time;
(102) and controlling the direction of a phased array transmitting wave beam at a specified time according to the downlink agility information, converting the downlink burst signal into a downlink wireless burst signal and sending the downlink wireless burst signal to the ground user according to the downlink agility information.
Wherein, the specific process of the step (3) is as follows:
(301) controlling the direction of a receiving wave beam of the phased array antenna according to the uplink agility information, and converting an uplink wireless burst signal sent by a ground user into an uplink burst signal;
(302) and analyzing a working mode according to the uplink agility information, demodulating and decoding the uplink burst signals burst by burst according to the working mode, and generating and outputting uplink baseband data.
A control device based on satellite autonomous control wave beam burst-by-burst agility comprises a phased array wave beam agility control module 1, a satellite-borne demodulation module 2, a satellite-borne modulation module 3 and a phased array antenna module 4;
the phased array beam agility control module 1 is used for generating uplink agility information and downlink agility information, receiving downlink baseband data, sending the uplink agility information to the satellite-borne demodulation module 2 and the phased array antenna module 4, sending the downlink agility information to the satellite-borne modulation module 3 and the phased array antenna module 4, sending the downlink baseband data to the satellite-borne modulation module 3, and receiving the uplink baseband data and then outputting the uplink baseband data;
the satellite-borne modulation module 3 is used for generating a modulation control instruction according to the downlink agility information, converting downlink baseband data into a downlink burst signal which changes burst by burst according to the control instruction at a specified time, and sending the downlink burst signal to the phased array antenna module 4;
the phased array antenna module 4 is used for receiving the downlink agility information and the downlink burst signals, controlling the direction of the transmitting wave beam of the phased array at a specified time according to the downlink agility information, converting the downlink burst signals into downlink wireless burst signals and sending the downlink wireless burst signals to the ground user according to the downlink agility information; the satellite-borne demodulation module 2 is also used for receiving uplink agility information, controlling the direction of a receiving beam according to the uplink agility information, and converting the received uplink wireless burst signal into an uplink burst signal to be sent to the satellite-borne demodulation module;
after receiving the downlink wireless burst signal, the ground user completes timing control and sends an uplink wireless burst signal to the phased array antenna module 4 according to the timing control;
and the satellite-borne demodulation module 2 is used for receiving the uplink agility information, analyzing a working mode, receiving the uplink burst signals sent by the phased array antenna module 4, demodulating and decoding the uplink burst signals burst by burst according to the working mode, generating uplink baseband data and sending the uplink baseband data to the phased array beam agility control module 1.
Compared with the background technology, the invention has the following advantages:
1. the invention is based on the autonomous control on the satellite, switches and controls the working mode, and supports the simultaneous working of access communication and service communication;
2. the invention can autonomously control the phased array wave beam switching to complete the burst-by-burst wave beam switching of burst signals;
3. the invention uses spot beams to reach the national beam coverage;
4. the invention can reduce the power consumption and weight of the satellite communication system and save the satellite energy;
5. the satellite communication system of the invention has flexible application and can simultaneously meet the requirements of user access and service communication.
Drawings
Fig. 1 is a diagram of a communication system configuration of the present invention.
Detailed Description
The invention discloses a control method and a device for burst-by-burst agility based on satellite autonomous control wave beams, which have two working modes of access communication and service communication, can autonomously switch the working modes, and can autonomously control burst-by-burst agility of phased array wave beams. As shown in fig. 1, the system comprises a phased array beam agility control module 1, a satellite-borne demodulation module 2, a satellite-borne modulation module 3, a phased array antenna module 4, and a ground user.
The method comprises the following steps:
(1) uplink agility information and downlink agility information are generated on the satellite, downlink baseband data are received and converted into downlink burst signals, the downlink burst signals and the switching time of the transmitting wave beams of the phased-array antenna are synchronously controlled by using the downlink agility information, and downlink wireless burst signals are generated and sent to a ground user;
the method for synchronously controlling the switching time of the downlink burst signal and the transmitting wave beam of the phased array antenna by using the downlink agility information comprises the following specific processes:
(101) generating a modulation control instruction according to the downlink agility information, and converting downlink baseband data into a downlink burst signal which changes burst by burst according to the control instruction at a specified time;
(102) and controlling the direction of a phased array transmitting wave beam at a specified time according to the downlink agility information, converting the downlink burst signal into a downlink wireless burst signal and sending the downlink wireless burst signal to the ground user according to the downlink agility information.
(2) The ground user receives the downlink wireless burst signal, completes timing control and sends the uplink wireless burst signal to the satellite according to the timing control;
(3) and the satellite performs beam pointing control according to the uplink agility information to complete synchronous control of the switching time of transmitting uplink wireless burst signals by the ground user and receiving beams by the phased array antenna. The specific process is as follows:
(301) controlling the direction of a receiving wave beam of the phased array antenna according to the uplink agility information, and converting an uplink wireless burst signal sent by a ground user into an uplink burst signal;
(302) and analyzing a working mode according to the uplink agility information, demodulating and decoding the uplink burst signals burst by burst according to the working mode, and generating uplink baseband data for output.
Referring to fig. 1, a control device for burst-by-burst agility based on satellite autonomous control beams comprises a phased array beam agility control module 1, a satellite-borne demodulation module 2, a satellite-borne modulation module 3 and a phased array antenna module 4;
the phased array beam agility control module 1 is used for generating uplink agility information and downlink agility information, receiving downlink baseband data, sending the uplink agility information to the satellite-borne demodulation module 2 and the phased array antenna module 4, sending the downlink agility information to the satellite-borne modulation module 3 and the phased array antenna module 4, sending the downlink baseband data to the satellite-borne modulation module 3, and receiving the uplink baseband data and then outputting the uplink baseband data;
the satellite-borne modulation module 3 is used for generating a modulation control instruction according to the downlink agility information, converting downlink baseband data into a downlink burst signal which changes burst by burst according to the control instruction at a specified time, and sending the downlink burst signal to the phased array antenna module 4;
the phased array antenna module 4 is used for receiving the downlink agility information and the downlink burst signals, controlling the direction of the transmitting wave beam of the phased array at a specified time according to the downlink agility information, converting the downlink burst signals into downlink wireless burst signals and sending the downlink wireless burst signals to the ground user according to the downlink agility information; the satellite-borne demodulation module 2 is also used for receiving uplink agility information, controlling the direction of a receiving beam according to the uplink agility information, and converting the received uplink wireless burst signal into an uplink burst signal to be sent to the satellite-borne demodulation module;
after receiving the downlink wireless burst signal, the ground user completes timing control and sends an uplink wireless burst signal to the phased array antenna module 4 according to the timing control;
and the satellite-borne demodulation module 2 is used for receiving the uplink agility information, analyzing a working mode, receiving the uplink burst signals sent by the phased array antenna module 4, demodulating and decoding the uplink burst signals burst by burst according to the working mode, generating uplink baseband data and sending the uplink baseband data to the phased array beam agility control module 1.
Claims (2)
1. A control method based on satellite autonomous control wave beam sudden-to-sudden agility is characterized by comprising the following steps:
(1) uplink agility information and downlink agility information are generated on the satellite, downlink baseband data are received and converted into downlink burst signals, the downlink burst signals and the switching time of the transmitting wave beams of the phased-array antenna are synchronously controlled by using the downlink agility information, and downlink wireless burst signals are generated and sent to a ground user;
(2) the ground user receives the downlink wireless burst signal, completes timing control and sends the uplink wireless burst signal to the satellite according to the timing control;
(3) beam pointing control is carried out on the satellite according to the uplink agility information, and synchronous control of the switching time of transmitting uplink wireless burst signals by ground users and receiving beams by a phased array antenna is completed;
the step (1) of using the downlink agility information to complete the synchronous control of the downlink burst signal and the switching time of the transmitting wave beam of the phased array antenna comprises the following specific processes:
(101) generating a modulation control instruction according to the downlink agility information, and converting downlink baseband data into a downlink burst signal which changes burst by burst according to the modulation control instruction at a specified time;
(102) controlling the direction of a phased array transmitting wave beam at a specified time according to the downlink agility information, converting a downlink burst signal into a downlink wireless burst signal, and transmitting the downlink wireless burst signal to a ground user according to the downlink agility information;
wherein, the specific process of the step (3) is as follows:
(301) controlling the direction of a receiving wave beam of the phased array antenna according to the uplink agility information, and converting an uplink wireless burst signal sent by a ground user into an uplink burst signal;
(302) analyzing a working mode according to the uplink agility information, demodulating and decoding the uplink burst signals burst by burst according to the working mode, and generating uplink baseband data to be output;
and burst-by-burst agile control based on the satellite autonomous control beam is completed.
2. A control device based on satellite autonomous control wave beam burst-by-burst agility is characterized by comprising a phased array wave beam agility control module (1), a satellite-borne demodulation module (2), a satellite-borne modulation module (3) and a phased array antenna module (4);
the phased array beam agility control module (1) is used for generating uplink agility information and downlink agility information, receiving downlink baseband data, sending the uplink agility information to the satellite-borne demodulation module (2) and the phased array antenna module (4), sending the downlink agility information to the satellite-borne modulation module (3) and the phased array antenna module (4), sending the downlink baseband data to the satellite-borne modulation module (3), and receiving the uplink baseband data and then outputting the downlink baseband data;
the satellite-borne modulation module (3) is used for generating a modulation control instruction according to the downlink agility information, converting downlink baseband data into a downlink burst signal which changes burst by burst according to the control instruction at a specified time, and sending the downlink burst signal to the phased array antenna module (4);
the phased array antenna module (4) is used for receiving the downlink agility information and the downlink burst signals, controlling the direction of the transmitting wave beam of the phased array at a specified time according to the downlink agility information, converting the downlink burst signals into downlink wireless burst signals and sending the downlink wireless burst signals to the ground user according to the downlink agility information; the satellite-borne demodulation module is also used for receiving uplink agility information, controlling the direction of a receiving beam according to the uplink agility information, converting the received uplink wireless burst signal into an uplink burst signal and sending the uplink burst signal to the satellite-borne demodulation module (2);
the ground user is used for finishing timing control after receiving the downlink wireless burst signal and sending an uplink wireless burst signal to the phased array antenna module (4) according to the timing control;
and the satellite-borne demodulation module (2) is used for receiving the uplink agility information, analyzing a working mode, receiving the uplink burst signals sent by the phased array antenna module (4), demodulating and decoding the uplink burst signals burst by burst according to the working mode, generating uplink baseband data and sending the uplink baseband data to the phased array beam agility control module (1).
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| KR20150128729A (en) * | 2013-02-16 | 2015-11-18 | 케이블텔레비젼래버러토리즈,인코포레이티드 | Multiple-input multiple-output(mimo) communication system |
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