CN114337791A - Method for automatically establishing link for relay communication machine full duplex communication for Mars detection - Google Patents
Method for automatically establishing link for relay communication machine full duplex communication for Mars detection Download PDFInfo
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Abstract
The invention discloses a method for automatically establishing a full-duplex communication link of a relay communicator for Mars detection, which is used for automatically establishing the full-duplex communication link between a Mars surrounding device and a landing patrol device and mainly comprises the following steps: (1) the initiator of the communication machine starts a handshake process, sends a handshake instruction on a handshake channel and then enters a handshake waiting state; (2) after receiving the handshake command, the responder of the communicator sends a handshake state frame to the initiator of the communicator; (3) after receiving the handshake state frame, the initiator of the communicator enters inter-device data communication, and the handshake is successful; (4) after the responder of the communicator receives the normal sequence, the responder enters the inter-communicator data communication, and the handshake is successful. The method for automatically establishing the link by full duplex communication solves the problem that the ground station cannot control the communication establishment between the spacecrafts in real time due to the fact that the deep space exploration spacecraft has long communication distance and large delay, and is particularly suitable for interplanetary exploration projects with complex communication tasks such as mars, wooden stars, asteroids and the like.
Description
Technical Field
The invention relates to the technical field of deep space exploration aerospace communication, in particular to a method for automatically establishing a link for full-duplex communication of a relay communicator for Mars exploration.
Background
In 7 months in 2020, the Mars detector 'Tian Ying' in China successfully launches and rises to the air in Wenchang in Hainan. After about 7 months of running fire, the Mars is successfully landed on the Mars surface in a day-to-day inquiry, and a Mars vehicle with a 'melting number' runs on the Mars surface to develop a scientific detection task, marking that China successfully realizes three major targets of completing Mars surrounding, landing and inspection through one task.
Mars detectors generally consist of a surround, a lander, and a rover. Measurement and control communication between the surround and the lander, or between the surround and the rover is called inter-device communication. In the task process, the communication distance between the Mars detector and the earth is as far as 4 hundred million kilometers, great signal attenuation exists in remote control and remote measurement and control communication, the one-way communication time delay is as long as about 15 minutes, and the measurement and control communication arc section between the ground station and the detector is limited. Therefore, it is necessary to establish an efficient, autonomous and reliable inter-device communication link between the surround device and the patrol device, and solve the problems of autonomous establishment of the inter-device communication link and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for automatically establishing a full-duplex communication link of a relay communicator for Mars detection, which aims to solve the problems that communication link establishment cannot be controlled in real time by a ground measurement and control station between spacecrafts, and particularly the Mars detection process is limited by long communication distance, large communication delay and the ground station cannot control the communication establishment process in real time.
In order to achieve the above purpose, the technical solution for solving the technical problem is as follows:
a method for automatically establishing a link of full-duplex communication of a relay communicator for Mars detection comprises the following steps:
step S1: the communication machine handshake initiator and handshake responder are both in initial state and wait for the parameter setting of local instruction;
step S2: the communication machine handshake responder receives the local instruction, sets the local instruction as a full-duplex communication handshake responder, opens the receiver and is in a handshake waiting state;
step S3: the communication machine handshake initiator receives the local instruction and transmits a single carrier on a handshake channel;
step S4: after the communication machine handshake initiator sends the single carrier, an idle sequence is sent on a handshake channel;
step S5: after the communication machine handshake initiator sends the idle sequence, starting to send handshake commands on a handshake channel;
step S6: after the communication machine handshake initiator sends out the handshake command, a tail sequence is sent out on a handshake channel;
step S7: after the communication machine handshake initiator sends the tail sequence, the transmitter is closed, and the receiver enters a handshake response waiting state;
step S8: after a communication machine handshake responder receives a handshake instruction sent by a communication machine handshake initiator on a handshake channel, working setting is carried out according to transmitter parameters, receiver parameters and a working channel in the handshake instruction;
step S9: after the communication machine handshake responder receives the handshake instruction, the transmitter is opened, and a single carrier signal is sent on a handshake channel;
step S10: after the communication machine handshake responder sends the single carrier, an idle sequence is sent on a handshake channel;
step S11: after the communication machine handshake responder sends an idle sequence, a handshake state frame is sent to the communication machine handshake initiator on a handshake channel;
step S12: after receiving the handshake state frame on the handshake channel, the communication machine handshake initiator demodulates the relevant information, opens the transmitter, and switches the receiver and the transmitter to the working channel;
step S13: after a communication machine handshake initiator opens a transmitter, a single carrier is transmitted on a working channel;
step S14: after the communication machine handshake initiator sends the single carrier, an idle sequence is sent on a working channel;
step S15: after the communication machine handshake initiator finishes sending the idle sequence, starting to send data frames, entering data communication between the devices, and successfully handshaking;
step S16: after receiving the data frame on the working channel, the communication machine handshake responder sends a single carrier on the working channel;
step S17: after the communication machine handshake responder sends the single carrier, an idle sequence is sent on a working channel;
step S18: after the responder sends the idle sequence, it starts to send data frame, and enters into the inter-device data communication, and the handshake is successful.
Further, the step 3 comprises the following steps:
the communication machine handshake initiator receives the local instruction, sets the local instruction as a full-duplex communication handshake initiator, sets transmitter parameters, receiver parameters and a working channel of the handshake initiation communication, opens the transmitter and the receiver, and sends a single carrier signal on the handshake channel.
Further, the step 4 comprises the following steps:
and after the communication machine handshake initiator finishes sending the single carrier, sending an idle sequence on a handshake channel, wherein the optional range of the sending bit number of the idle sequence is 100 bits and 1000 bits.
Further, the step 5 comprises the following steps:
the handshake instruction sent by the communication machine handshake initiator on the handshake channel comprises transmitter parameters, receiver parameters and a working channel for setting the communication machine handshake responder.
Further, the step 7 comprises the following steps:
after the communication machine handshake initiator finishes sending the tail sequence, the transmitter is closed and a timer is started, wherein the timer is used for calculating the time for the communication machine handshake responder to reply the handshake state frame; if the waiting time is out, the communication machine handshake initiator initiates the handshake again, and then the state of step S3 is entered again.
Further, the step 11 includes the steps of:
after the handshake responder of the communication machine sends the handshake state frame, the parameters of the receiver are switched to the working channel, and symbol locking is waited on the working channel.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
the invention designs a handshake initiator and a responder of full duplex communication, and the two communication parties respectively carry out autonomous communication link establishment according to the method of the invention, thereby solving the difficult problems that the communication establishment between the deep space exploration spacecraft cannot be controlled in real time by a ground station because the communication distance is far and the delay is large, and being particularly suitable for interplanetary exploration projects with complex communication tasks such as mars, wooden star, asteroid and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 the drawings:
fig. 1 is a flow chart of an autonomous establishment method of an inter-device communication link in a mars detection process according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking specific embodiments as examples with reference to the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
As shown in fig. 1, the present embodiment discloses a method for establishing a full-duplex communication autonomous link for a relay communicator for mars detection, which includes the following steps:
step S1: the communication machine handshake initiator and handshake responder are both in initial state and wait for the parameter setting of local instruction;
step S2: the communication machine handshake responder receives the local instruction, sets the local instruction as a full-duplex communication handshake responder, opens the receiver and is in a handshake waiting state;
step S3: the communication machine handshake initiator receives the local instruction, sets the local instruction as a full-duplex communication handshake initiator, opens the transmitter and the receiver, and transmits a single carrier signal with a certain time length on a handshake channel, wherein the selectable range of the single carrier transmission time length is 1-5 seconds, and the single carrier transmission time length in the example is 3 seconds;
further comprising step S3-1: the local instruction is used for setting transmitter parameters, receiver parameters, working channels and the like of the handshake initiating communication;
step S4: after the communication machine handshake initiator finishes sending the single carrier, an idle sequence is sent on a handshake channel, the optional range of the idle sequence sending bit number is 100 plus 1000 bits, and the idle sequence in the example is 500 bits;
step S5: after the communication machine handshake initiator sends the idle sequence, starting to send handshake commands on a handshake channel;
further comprising step S5-1: the handshake instruction sent by the communication machine handshake initiator on the handshake channel comprises transmitter parameters, receiver parameters, working channel and the like for setting the communication machine handshake responder.
Step S6: after the handshake initiator of the communication machine sends the handshake instruction, a tail sequence is sent on a handshake channel, the optional range of the sending bit number of the tail sequence is 100 plus 1000 bits, and the idle sequence in the example is 500 bits;
step S7: after the communication machine handshake initiator finishes sending the tail sequence, the transmitter is closed, and the receiver enters a handshake response waiting state, namely a handshake state frame waiting for the communication machine handshake responder to reply on a handshake channel;
further comprising step S7-1: after the communication machine handshake initiator finishes sending the tail sequence, the transmitter is closed and a timer is started, wherein the timer is used for calculating the time for the communication machine handshake responder to reply the handshake state frame, and the period of the timer can be selected within the range of 2-10 s. In this example, the period of the timer is 5S, and if the waiting time exceeds 5S, the communication device handshake initiator re-initiates the handshake, i.e., re-enters the state of step S3.
Step S8: after a communication machine handshake responder receives a handshake instruction sent by a communication machine handshake initiator on a handshake channel, working setting is carried out according to transmitter parameters, receiver parameters, a working channel and the like in the handshake instruction;
step S9: after receiving the handshake command, the communication machine handshake responder opens the transmitter, and transmits a single carrier signal with a certain time length on a handshake channel, wherein the selectable range of the single carrier transmission time length is 1-5 seconds, and the single carrier transmission time length in the example is 3 seconds;
step S10: after the communication machine handshake responder sends the single carrier, idle sequences with a certain bit quantity are sent on a handshake channel, the optional range of the sending bit quantity of the idle sequences is 100 bits and 1000 bits, and the idle sequences are 500 bits in the example;
step S11: after the communication machine handshake responder sends an idle sequence, a handshake state frame is sent to the communication machine handshake initiator on a handshake channel to represent that the communication machine handshake responder has received a handshake instruction;
further the step 11-1: after the handshake responder of the communication machine sends the handshake state frame, the parameters of the receiver are switched to the working channel, and symbol locking is waited on the working channel.
Step S12: after receiving the handshake state frame on the handshake channel, the communication machine handshake initiator demodulates the relevant information, opens the transmitter, and switches the receiver and the transmitter to the working channel;
step S13: after a transmitter is opened by a communication machine handshake initiator, a single carrier signal with a certain time length is transmitted on a working channel, the selectable range of the single carrier transmission time length is 1-5 seconds, and the single carrier transmission time length in the example is 3 seconds;
step S14: after the communication machine handshake initiator finishes sending the single carrier, idle sequences with a certain bit quantity are sent on a working channel, the optional range of the sending bit number of the idle sequences is 100-1000 bits, and the idle sequences in the example are 500 bits;
step S15: after the communication machine handshake initiator finishes sending the idle sequence, starting to send data frames, entering data communication between the devices, and successfully handshaking;
step S16: after receiving the data frame on the working channel, the communication machine handshake responder transmits a single carrier with a certain time length on the working channel, wherein the selectable range of the single carrier transmission time length is 1-5 seconds, and the single carrier transmission time length in the example is 3 seconds;
step S17: after the communication machine handshake responder sends the single carrier, an idle sequence is sent on the working channel, the optional range of the sending bit number of the idle sequence is 100 plus 1000 bits, and the idle sequence is 500 bits in the example;
step S18: after the responder sends the idle sequence, it starts to send data frame, and enters into the inter-device data communication, and the handshake is successful.
In the embodiment, a handshake initiator and a responder of full duplex communication are designed, and two communication parties respectively carry out autonomous communication link establishment according to the method of the invention, so that the problem that the ground station cannot control the communication establishment between the spacecraft in real time due to the long communication distance and the large delay of the deep space exploration spacecraft is solved, and the method is particularly suitable for inter-planet exploration projects with complex communication tasks such as mars, wooden stars, asteroids and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A method for automatically establishing a link of full-duplex communication of a relay communicator for Mars detection is characterized by comprising the following steps:
step S1: the communication machine handshake initiator and handshake responder are both in initial state and wait for the parameter setting of local instruction;
step S2: the communication machine handshake responder receives the local instruction, sets the local instruction as a full-duplex communication handshake responder, opens the receiver and is in a handshake waiting state;
step S3: the communication machine handshake initiator receives the local instruction and transmits a single carrier on a handshake channel;
step S4: after the communication machine handshake initiator sends the single carrier, an idle sequence is sent on a handshake channel;
step S5: after the communication machine handshake initiator sends the idle sequence, starting to send handshake commands on a handshake channel;
step S6: after the communication machine handshake initiator sends out the handshake command, a tail sequence is sent out on a handshake channel;
step S7: after the communication machine handshake initiator sends the tail sequence, the transmitter is closed, and the receiver enters a handshake response waiting state;
step S8: after a communication machine handshake responder receives a handshake instruction sent by a communication machine handshake initiator on a handshake channel, working setting is carried out according to transmitter parameters, receiver parameters and a working channel in the handshake instruction;
step S9: after the communication machine handshake responder receives the handshake instruction, the transmitter is opened, and a single carrier signal is sent on a handshake channel;
step S10: after the communication machine handshake responder sends the single carrier, an idle sequence is sent on a handshake channel;
step S11: after the communication machine handshake responder sends an idle sequence, a handshake state frame is sent to the communication machine handshake initiator on a handshake channel;
step S12: after receiving the handshake state frame on the handshake channel, the communication machine handshake initiator demodulates the relevant information, opens the transmitter, and switches the receiver and the transmitter to the working channel;
step S13: after a communication machine handshake initiator opens a transmitter, a single carrier is transmitted on a working channel;
step S14: after the communication machine handshake initiator sends the single carrier, an idle sequence is sent on a working channel;
step S15: after the communication machine handshake initiator finishes sending the idle sequence, starting to send data frames, entering data communication between the devices, and successfully handshaking;
step S16: after receiving the data frame on the working channel, the communication machine handshake responder sends a single carrier on the working channel;
step S17: after the communication machine handshake responder sends the single carrier, an idle sequence is sent on a working channel;
step S18: after the responder sends the idle sequence, it starts to send data frame, and enters into the inter-device data communication, and the handshake is successful.
2. The method for autonomous link establishment of full duplex communication of relay communicators for Mars sounding as claimed in claim 1, wherein said step 3 comprises the steps of:
the communication machine handshake initiator receives the local instruction, sets the local instruction as a full-duplex communication handshake initiator, sets transmitter parameters, receiver parameters and a working channel of the handshake initiation communication, opens the transmitter and the receiver, and sends a single carrier signal on the handshake channel.
3. The method for autonomous link establishment of full duplex communication of relay communicators for Mars sounding as claimed in claim 1, wherein said step 4 comprises the steps of:
and after the communication machine handshake initiator finishes sending the single carrier, sending an idle sequence on a handshake channel, wherein the optional range of the sending bit number of the idle sequence is 100 bits and 1000 bits.
4. The method for autonomous link establishment of full duplex communication of relay communicators for Mars sounding as claimed in claim 1, wherein said step 5 comprises the steps of:
the handshake instruction sent by the communication machine handshake initiator on the handshake channel comprises transmitter parameters, receiver parameters and a working channel for setting the communication machine handshake responder.
5. The method for autonomous link establishment of full duplex communication of relay communicators for Mars sounding as claimed in claim 1, wherein said step 7 comprises the steps of:
after the communication machine handshake initiator finishes sending the tail sequence, the transmitter is closed and a timer is started, wherein the timer is used for calculating the time for the communication machine handshake responder to reply the handshake state frame; if the waiting time is out, the communication machine handshake initiator initiates the handshake again, and then the state of step S3 is entered again.
6. The method for autonomous link establishment of full duplex communication of relay communicators for Mars sounding as claimed in claim 1, wherein said step 11 comprises the steps of:
after the handshake responder of the communication machine sends the handshake state frame, the parameters of the receiver are switched to the working channel, and symbol locking is waited on the working channel.
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