Point-to-point antenna blind alignment process synchronization method

Abstract

The invention provides a point-to-point antenna blind alignment process synchronization method, and belongs to the technical field of antenna alignment. The method comprises the following steps: setting the service of a home terminal station as a blind alignment mode, sending out a blind alignment signal, and setting a wide-beam antenna and a directional antenna to rotate at a constant speed; continuously judging whether a blind alignment signal of an opposite-end station is received or not, and after the blind alignment signal is received, sending position information and flag bit information of a local-end station to the outside; and continuously judging whether a blind alignment signal of the opposite-end station is received or not, calculating a communication direction angle after the blind alignment signal is received, rotating the directional antenna to the communication direction angle according to the flag bit information, setting a modulation-demodulation unit of the local-end station as a communication waveform and a service as a normal working mode, and completing blind alignment process synchronization. According to the invention, under the condition that the communication devices at the two ends cannot determine the site position, the blind alignment process of the two ends can be quickly synchronized, and the method has the advantages of strong controllability, good economical efficiency, low system complexity and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna alignment, and in particular to a point-to-point antenna blind alignment process synchronization method. Background Art

[0002] At present, in the process of aligning the antenna of communication equipment, the acquisition of antenna pointing information is usually achieved by knowing the site location information or using auxiliary communication equipment to exchange the site location information of both ends. When the site of one end moves or it is inconvenient to notify the equipment personnel of the other end of the location information, the site location information can be exchanged through auxiliary communication equipment, but the use of auxiliary communication equipment greatly increases the complexity of the system, occupies the cost of communication equipment, and reduces reliability to a certain extent. In addition, in extreme cases such as the auxiliary communication equipment being interfered with and the location information of the other end cannot be manually notified, the above methods cannot guide the communication equipment to align the antenna and establish a reliable link, and cannot achieve no dead angle and full coverage of the application field of communication equipment antenna alignment.

[0003] It can be seen that the current methods in the field of antenna alignment either do not realize blind alignment, or realize blind alignment and describe the device form, but fail to design the synchronization process of the blind alignment process in detail, making it difficult to synchronize the antenna point-to-point blind alignment process. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies in the above background technology and provide a point-to-point antenna blind alignment process synchronization method. The present invention does not need to know the location information of the equipment sites at both ends in advance, and can quickly achieve synchronization of the blind alignment process at both ends.

[0005] The object of the present invention is achieved in that:

[0006] A point-to-point antenna blind alignment process synchronization method is used to synchronize the antenna blind alignment process of a first site and a second site, wherein the first site and the second site are both equipped with a wide beam antenna and a directional antenna; the first site and the second site both perform the following steps:

[0007] Step 1: Set the device power of the local site, switch to the wide beam antenna receiving mode, set the local waveform to the blind alignment waveform, set the service to the blind alignment mode, and execute step 2 after the setting is successful to enter the blind alignment wide beam antenna receiving stage;

[0008] Step 2: Set the flag information of the local site, send a blind alignment signal outward, and at the same time, turn on the directional antenna power amplifier of the local site, and set the wide beam antenna and directional antenna of the local site to rotate at a constant speed;

[0009] Step 3, the local station continuously determines whether it has received the blind alignment signal from the opposite station, and after receiving it, executes step 4 or repeats step 3 according to the flag bit information;

[0010] Step 4: reset the flag information of the local site, calculate the communication direction angle, align the directional antenna to the communication direction angle, and send the location information and flag information of the local site outward;

[0011] Step 5, the local station continuously determines whether it has received the blind alignment signal from the opposite station, and after receiving it, executes step 7 or step 6 according to the flag bit information;

[0012] Step 6: The local station calculates the communication direction angle, takes n points on the left and right of the communication direction angle, forms 2n+1 anchor points, receives the blind alignment signal of the opposite station at each anchor point, repeats the cycle, notifies the opposite station to switch to normal communication waveform according to the flag information, and then goes to step 7;

[0013] Step 7, the local site continuously determines whether it has received the blind alignment signal from the other site. After receiving it, the local site calculates the communication direction angle, and rotates the directional antenna to the communication direction angle according to the flag information, sets the local site's modem unit to the communication waveform, and the service to the normal working mode, completing the blind alignment process synchronization.

[0014] Furthermore, the specific method of step 2 is:

[0015] Set the flag information of the local site to Flag:{1,0,0}, and send a blind alignment signal, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site; at the same time, turn on the directional antenna power amplifier of the local site, and set the wide beam antenna and directional antenna of the local site to rotate at a uniform speed; among them, latitude is the latitude of the local site, longititude is the longitude of the local site, Flag1, Flag2, and Flag3 are all Boolean values. When the Boolean value is 1, it is used to notify the opposite site to perform blind alignment, the local site has received the location information, and switch the waveform.

[0016] Furthermore, the specific method of step 3 is:

[0017] The local site continuously determines whether it has received the blind alignment signal from the opposite site. After receiving the signal, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site determines whether the ReFlag1 flag is 1. If so, execute step 4 to enter the blind alignment directional antenna reception stage, otherwise repeat step 3.

[0018] Furthermore, the specific method of step 4 is:

[0019] Set the flag information of the local site to Flag:{1,1,0}, calculate the communication direction angle according to the location information Location:{latitude,longitude} and ReLocation:{relatitude,relongitude}, then control the wide beam antenna and directional antenna of the local site to stop rotating at a constant speed, set them to directional mode, align the directional antenna to the communication direction angle, and send the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site.

[0020] Furthermore, the specific method of step 5 is:

[0021] The local site continuously determines whether it has received the blind alignment signal of the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, it determines whether the ReFlag2 flag is 1. If it is 1, the flag information of the local site is set to Flag:{1,1,1}, and a blind alignment signal is sent to the opposite site, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site, to notify the opposite site to switch the normal communication waveform, and then go to step 7; if the timeout time T is reached, timeout1 If the ReFlag2 flag bit is still not set to 1, execute step 6 to perform blind alignment and synchronization antenna scanning.

[0022] Furthermore, the specific method of step 6 is:

[0023] The local station calculates the communication direction angle, takes n points on the left and right of the communication direction angle, forms 2n+1 anchor points, and sets the step angle to θ bs The duration of stay at a single point is T period , start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag2 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and then go to step 7;

[0024] If the timeout period T is reached timeout2 If the ReFlag2 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage.

[0025] Furthermore, the specific method of step 7 is:

[0026] The local site continuously determines whether it has received the blind alignment signal from the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modem unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site calculates the communication direction angle and determines whether the ReFlag3 flag is 1. If so, the local site rotates the directional antenna to the communication direction angle, sets the modem unit of the local site to the communication waveform, and the service to the normal working mode, completing the blind alignment process synchronization;

[0027] If the timeout period T is reached timeout3 If the ReFlag3 flag is still not set to 1, a blind alignment antenna scan is performed:

[0028] Take n points on the left and right of the communication direction angle to form 2n+1 anchor points, and set the step angle to θ bs The duration of stay at a single point is T period, start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag3 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and repeat step 7;

[0029] If the timeout period T is reached timeout2 If the ReFlag3 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage.

[0030] Compared with the background technology, the present invention has the following advantages:

[0031] 1. The present invention supplements the process synchronization method of point-to-point antenna blind alignment, overcoming the problem that the conventional alignment method cannot be effectively opened when the information of the other end is unknown.

[0032] 2. The present invention is not based on a specific application scenario, and the blind alignment synchronization method can be transplanted on any communication device with a blind alignment characteristic waveform, and has extremely strong universality.

[0033] 3. The synchronization method for the blind alignment of directional antennas in the receiving stage proposed by the present invention has the advantages of being simple and autonomous and controllable.

[0034] In summary, the present invention realizes mutual transmission of position information and flag bits through blind alignment waveforms, and realizes blind antenna alignment through blind alignment scanning and process synchronization methods. The present invention has the advantages of simplicity, low cost, high reliability, etc., and is particularly suitable for scenarios where point-to-point antenna alignment and communication equipment activation need to be quickly realized when the location information of the opposite site cannot be known and other auxiliary communication means cannot be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 4 is a structural block diagram of a site in an embodiment of the present invention.

[0036] Figure 2 This is a flowchart of the blind alignment data receiving and sending thread.

[0037] Figure 3 This is the flow chart of the blind alignment initialization phase.

[0038] Figure 4Flowchart of the receive phase for blindly aligning a wide beam antenna.

[0039] Figure 5 This is the flow chart of the blind alignment directional antenna receiving stage.

[0040] Figure 6 Complete the configuration phase flow chart for blind alignment. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0042] A point-to-point antenna blind alignment process synchronization method is used to synchronize the antenna blind alignment process of a first site and a second site. The first site and the second site should be equipped with communication equipment with a blind alignment function and a directional and wide beam integrated antenna. The specific structure of the site is as follows Figure 1 As shown, it includes a main control unit, a business unit, a coding and modulation and demodulation unit, an amplifying unit, and an antenna unit, and these units constitute a typical point-to-point communication device; the main control unit is responsible for deploying the synchronization method in the present invention and managing other units, the business unit is responsible for sending and receiving parsed communication data, the coding and modulation and demodulation unit is responsible for signal encoding, decoding and modulation and demodulation, the amplifying unit is responsible for amplifying the signal and transmitting it to the antenna unit and receiving the signal from the antenna unit for amplification and filtering, and the antenna unit is responsible for the actual signal to be sent and received and the alignment control.

[0043] Both the first and second sites perform the following steps:

[0044] Step 1: Set the device power of the local site, switch to the wide beam antenna receiving mode, set the local waveform to the blind alignment waveform, set the service to the blind alignment mode, and execute step 2 after the setting is successful to enter the blind alignment wide beam antenna receiving stage;

[0045] Step 2, set the flag information of the local site to Flag:{1,0,0}, and send a blind alignment signal outward, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site; at the same time, turn on the directional antenna power amplifier of the local site, and set the wide beam antenna and directional antenna of the local site to rotate at a uniform speed; where latitude is the latitude of the local site, longititude is the longitude of the local site, Flag1, Flag2, and Flag3 are all Boolean values. When the Boolean value is 1, it is used to notify the opposite site to perform blind alignment, the local site has received the location information, and switch the waveform respectively;

[0046] Step 3, the local site continuously determines whether it has received the blind alignment signal of the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site determines whether the ReFlag1 flag is 1, if so, execute step 4 to enter the blind alignment directional antenna reception stage, otherwise repeat step 3;

[0047] Step 4: Set the flag information of the local site to Flag:{1,1,0}, calculate the communication direction angle according to the location information Location:{latitude,longitude} and ReLocation:{relatitude,relongitude}, then control the wide beam antenna and directional antenna of the local site to stop rotating at a constant speed, set them to directional mode, align the directional antenna to the communication direction angle, and send the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site outward;

[0048] Step 5, the local site continuously determines whether it has received the blind alignment signal of the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, determine whether the ReFlag2 flag is 1. If it is 1, set the flag information of the local site to Flag:{1,1,1}, and send a blind alignment signal to the opposite site, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site, to notify the opposite site to switch the normal communication waveform, and then go to step 7; if the timeout time T is reached, timeout1 If the ReFlag2 flag bit is still not set to 1, execute step 6 to perform blind alignment antenna scanning;

[0049] Step 6: The local station calculates the communication direction angle, takes n points on the left and right of the communication direction angle, forms 2n+1 anchor points, and sets the step angle to θ bs The duration of stay at a single point is T period, start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag2 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and then go to step 7;

[0050] If the timeout period T is reached timeout2 If the ReFlag2 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage;

[0051] Step 7, the local site continuously determines whether it has received the blind alignment signal of the opposite site. After receiving it, the location information and flag information of the opposite site are parsed through the modem unit and the service unit, and the received location information and flag information are assigned to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site calculates the communication direction angle, and determines whether the ReFlag3 flag is 1. If so, the local site rotates the directional antenna to the communication direction angle, sets the modem unit of the local site to the communication waveform, and the service to the normal working mode, completing the blind alignment process synchronization;

[0052] If the timeout period T is reached timeout3 If the ReFlag3 flag is still not set to 1, a blind alignment antenna scan is performed:

[0053] Take n points on the left and right of the communication direction angle to form 2n+1 anchor points, and set the step angle to θ bs The duration of stay at a single point is T period, start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag3 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and repeat step 7;

[0054] If the timeout period T is reached timeout2 If the ReFlag3 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage.

[0055] When implementing this method, it can be set to multi-threaded form, as follows:

[0056] Blind alignment synchronization method design: including local location information and synchronization flag design. The single station information required for blind alignment synchronization includes longitude, latitude, and 6 flags:

[0057] Since this is a point-to-point communication, the following constraints are imposed: the local site is site 1, and the other site is site 2.

[0058] The local flag is represented by Flag:{Flag1,Flag2,Flag3}, where:

[0059] a. Flag1: Notify site 2 of the blind alignment data flag, which is always 1;

[0060] b. Flag2: Notify station 2 that the local terminal has received the location information flag;

[0061] c.Flag3: Notify site 2 to switch the waveform flag.

[0062] The peer flag is represented by ReFlag:{ReFlag1,ReFlag2,ReFlag3}, where:

[0063] a.ReFlag1: The blind alignment data flag received by site 1 from site 2;

[0064] b.ReFlag2: The received location information flag received by site 1 from site 2;

[0065] c.ReFlag3: The switching waveform flag received by site 1 from site 2.

[0066] Send blind alignment data thread:

[0067] Determine whether the blind alignment process is in the blind alignment wide beam antenna reception stage or the directional antenna reception stage. If yes, send the local position data and the blind alignment data flags Flag1, Flag2, and Flag3 to the other end. Otherwise, do nothing. After completing the above operations, delay T send , and execute the thread in a loop.

[0068] Receive blind alignment data thread:

[0069] Whether the antenna unit receives the blind alignment signal from the other end, and after modulation and demodulation and analysis by the business unit, it correctly identifies the blind alignment data, sets the position information and flag of the other end, that is, assigns the flags Flag1, Flag2, and Flag3 sent by the other end to ReFlag1, ReFlag2, and ReFlag3 of the local end. After completing the above operation, the delay time is T recv , and execute the thread in a loop.

[0070] Blind alignment initialization phase:

[0071] Set the power of the local communication device, switch to wide-beam antenna receiving mode, set the local waveform to blind alignment waveform, set the service to blind alignment mode, and enter the blind alignment wide-beam antenna receiving stage after success, otherwise repeat this stage.

[0072] Blind alignment of wide beam antenna receiving stage:

[0073] First, set the local flag to Flag:{1,0,0} to notify the other end to receive blind alignment data; turn on the local directional antenna power amplifier, set the local antenna to rotate at a constant speed, including wide beam antennas and directional antennas. After the devices at both ends are divided into two types according to the transmit and receive frequency bands, the master end rotates at speed v0 and the slave end rotates at speed v1; determine whether the received blind alignment data flag ReFlag1 of the other end is 1, and enter the blind alignment directional antenna reception stage, otherwise delay for 1s, and execute the judgment and subsequent operations in a loop.

[0074] Blind alignment with directional antenna receiving stage:

[0075] First, the local flag is set to Flag:{1,1,0} to notify the other end that the local end has completed data position reception and can perform waveform switching. The local end controls the antenna unit antenna to rotate to the communication azimuth by calculating the position information of the two locations;

[0076] It is determined that the peer position information flag ReFlag2 and the switching synchronization waveform flag ReFlag3 received by the local end are both 1, then the local flag bit notification switching waveform flag Flag3 is determined to be 1 and then the antenna is controlled to rotate to the communication direction angle period T period , reserve T sync =n0×T period After the adjustment time is completed, the blind alignment configuration phase is entered; if the local switching waveform flag Flag3 is not 1, the local flag Flag: {1,1,1} is set and the antenna is controlled to rotate to the communication direction angle period T period , reserve T sync =n1×T period After the adjustment time is completed, the blind alignment configuration phase is also entered;

[0077] When one of the opposite end position information flag ReFlag2 and the switching synchronization waveform flag ReFlag3 is not 1, the following method is executed: determine whether the opposite end position information flag ReFlag2 is 1, if so, set the local end flag Flag: {1,1,1}, otherwise do not set the local end flag to keep the previous parameters, continue to control the antenna to rotate to the communication direction angle, delay 1s and loop the method. Determine the loop execution time of this method when the time exceeds T timeout1 When the antenna is controlled, the loop step is θ at n points on the left and right of the communication direction angle. bs The scanning time at a single point is T period , when the time exceeds T timeout2 When the signal is received, the flag bits Flag:{0,0,0}, ReFlag:{0,0,0} and the other end location data ReLocation:{0,0} are cleared, and the blind alignment wide beam antenna reception phase is re-entered.

[0078] Blind alignment completes the configuration phase:

[0079] Set the antenna unit to directional antenna receiving mode, the modulation and demodulation unit to synchronous waveform, and the service unit to normal working mode. Complete this stage and end the blind alignment process. Otherwise, repeat this stage.

[0080] The communication equipment at both ends of the site first performs the blind alignment preparation phase, preparing for blind alignment data sending and receiving functions. The process is as follows: Figure 2 After the device formally enters the blind alignment activation process, it enters the blind alignment initialization phase. The process is as follows Figure 3 After the normal completion, it will enter the blind alignment wide beam antenna receiving stage, the process is as follows Figure 4 After receiving the blind alignment data from the other end, the device enters the blind alignment directional antenna reception phase. The process is as follows Figure 5 After the switching waveform flag is received, the blind alignment configuration phase is entered. The process is as follows Figure 6 As shown, the blind alignment process synchronization of the two end sites is completed.

[0081] The following takes site 1 as an example for detailed description:

[0082] (1) Single-ended data transmission and update interaction:

[0083] The master control software of site 1 establishes a thread for sending blind alignment data, sending the location information Location:{latitude,longitude} of site 1 and the local flag Flag:{Flag1,Flag2,Flag3}, with a period of T send ; Establish a thread for receiving blind alignment data. When the blind alignment data is correctly parsed, assign the peer location ReLocation:{relatitude,relongitude} of site 1 and the peer flag ReFlag:{ReFlag1,ReFlag2,ReFlag3}. The period is T recv . T send With T recv It should be set according to the blind alignment waveform characteristics of the communication equipment.

[0084] (2) Blind alignment initialization phase:

[0085] Site 1 initiates the blind alignment function and first enters the blind alignment initialization phase, automatically sets the local site power, switches the signal receiving mode to the wide beam antenna receiving mode, sets the local modem unit transceiver waveform to the blind alignment waveform, and sets the service unit to the blind alignment mode.

[0086] (3) Blindly aim at the wide beam antenna receiving stage:

[0087] Enter the blind alignment wide beam antenna reception stage, switch the local antenna mode to the uniform rotation mode, set the local flag Flag: {1,0,0}, turn on the local power amplifier, use slow rotation at site 1, and continuously determine whether the blind alignment data flag ReFlag1 of the other end is 1. If it is 1, site 1 receives the blind alignment data of site 2 through the wide beam antenna.

[0088] (4) Blind alignment with directional antenna reception stage:

[0089] When station 1 first receives the blind alignment data information from station 2, the process is as follows (i.e. station 1 stops rotating first):

[0090] Site 1 enters the blind directional antenna reception stage and has received the location information of Site 2. The local flag of Site 1 is set to Flag:{1,1,0}. After calculating the communication direction angle based on the location information Location:{latitude,longitude} and ReLocation:{relatitude,relongitude}, the local antenna is controlled to stop rotating at a constant speed and set to directional mode to align to the communication direction angle. The local position information flag ReFlag2 received by the local end is judged. When it changes to 1, it indicates that the other end has also switched to the blind directional antenna reception stage. At this time, the local flag of Site 1 is set to Flag:{1,1,1} to notify the other end that it can switch to normal communication waveform. When the waveform switching flag ReFlag3 received by the local end is 1, the antenna is rotated to the current direction angle with a period of T period , waiting time T sync , then complete blind alignment synchronization;

[0091] Otherwise, according to the timeout period T timeout1 Then, n points are moved to the left and right of the current communication direction angle, for a total of 2n+1 anchor points, and the step angle is θ bs , and the single point stay time is T period The forward and reverse cycle scan, when the time exceeds T timeout2 When the step angle θ is 0, the flag bit Flag:{0,0,0}, ReFlag:{0,0,0} and the peer location data ReLocation:{0,0} are cleared, and the blind alignment wide beam antenna reception phase is re-entered. bs Should be smaller than the antenna main beam angle θ ant , the timeout period should be T timeout1 <T timeout2 , and T timeout2 -T timeout1 3(2n+1)×2T period It is guaranteed to complete a forward and reverse cycle scan.

[0092] When station 1 receives the blind alignment data information from station 2, the process is as follows (i.e. station 1 stops rotating):

[0093] Site 2 first enters the blind alignment directional antenna reception stage. Site 2 receives the location information of Site 1, sets the local flag of Site 2 to Flag:{1,1,0}, calculates the communication direction angle based on the location information Location:{latitude,longitude} and ReLocation:{relatitude,relongitude}, and then controls the antenna of Site 2 to stop rotating at a constant speed and set it to directional mode, aligning it to the communication direction angle. Site 1's uniformly rotating wide beam antenna receives the blind alignment data signal from Site 2's directional antenna and switches to the blind alignment directional antenna reception mode. At this time, Site 1's opposite end flag is ReFlag:{1,1,0}, and the conditions for switching to the normal communication waveform are met. The local flag is set to Flag:{1,1,1}. The ReFlag2 of Site 2 at this time may be automatically changed to 1 after receiving the blind alignment data from Site 1. At this time, the conditions for switching to the normal communication waveform are met. The local flag is set to Flag:{1,1,1}, and the antenna is rotated to the current direction angle with a period of T. period , waiting time T sync , after which both ends of the site enter the blind alignment to complete the configuration phase.

[0094] If it has not changed to 0, it means that station 2 does not think that it has received the blind alignment data of station 1, and enters the timeout judgment and cyclic scanning process. Station 1 also repeats the timeout judgment and cyclic scanning process when ReFlag3 is not 1.

[0095] (5) Blind alignment completes the configuration phase:

[0096] At this time, both ends of the site have completed blind alignment synchronization, set the modem unit to the communication waveform, the service to the normal working mode, and complete the blind alignment process synchronization method.

[0097] The method can realize fast blind alignment synchronization of point-to-point communication devices without knowing the location information of the sites at both ends and without using auxiliary communication equipment to assist in exchanging location information.

[0098] In summary, the present invention can quickly synchronize the blind alignment process at both ends when the communication devices at both ends cannot know the site location. The present invention has the advantages of strong controllability, good economy, and low system complexity. It solves the problem that the antenna alignment algorithm in the traditional point-to-point communication establishment phase needs to know the site location information of the other end in advance, but cannot know it in special circumstances, so the antenna pointing information cannot be obtained and the antenna alignment cannot be performed. The present invention is a supplement, improvement or replacement for the traditional point-to-point antenna alignment algorithm.

Claims

1. A point-to-point antenna blind alignment process synchronization method, characterized in that: Used to synchronize the blind antenna alignment process of a first site and a second site, where both the first site and the second site are equipped with a wide beam antenna and a directional antenna; the first site and the second site both perform the following steps: Step 1: Set the device power of the local site, switch to the wide beam antenna receiving mode, set the local waveform to the blind alignment waveform, set the service to the blind alignment mode, and execute step 2 after the setting is successful to enter the blind alignment wide beam antenna receiving stage; Step 2: Set the flag information of the local site, send a blind alignment signal outward, and at the same time, turn on the directional antenna power amplifier of the local site, and set the wide beam antenna and directional antenna of the local site to rotate at a uniform speed; Step 3, the local station continuously determines whether it has received the blind alignment signal from the opposite station, and after receiving it, executes step 4 or repeats step 3 according to the flag bit information; Step 4: reset the flag information of the local site, calculate the communication direction angle, align the directional antenna to the communication direction angle, and send the location information and flag information of the local site outward; Step 5, the local station continuously determines whether it has received the blind alignment signal from the opposite station, and after receiving it, executes step 7 or step 6 according to the flag bit information; Step 6: The local station calculates the communication direction angle, takes n points on the left and right of the communication direction angle, forms 2n+1 anchor points, receives the blind alignment signal of the opposite station at each anchor point, repeats the cycle, notifies the opposite station to switch to normal communication waveform according to the flag information, and then goes to step 7; Step 7, the local site continuously determines whether it has received the blind alignment signal from the other site. After receiving it, the local site calculates the communication direction angle, and rotates the directional antenna to the communication direction angle according to the flag information, sets the local site's modem unit to the communication waveform, and the service to the normal working mode, completing the blind alignment process synchronization.

2. A point-to-point antenna blind alignment process synchronization method according to claim 1, characterized in that: The specific method of step 2 is: Set the flag information of the local site to Flag:{1,0,0}, and send a blind alignment signal, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site; at the same time, turn on the directional antenna power amplifier of the local site, and set the wide beam antenna and directional antenna of the local site to rotate at a uniform speed; among them, latitude is the latitude of the local site, longititude is the longitude of the local site, Flag1, Flag2, and Flag3 are all Boolean values. When the Boolean value is 1, it is used to notify the opposite site to perform blind alignment, the local site has received the location information, and switch the waveform.

3. A point-to-point antenna blind alignment process synchronization method according to claim 2, characterized in that: The specific method of step 3 is: The local site continuously determines whether it has received the blind alignment signal from the opposite site. After receiving the signal, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site determines whether the ReFlag1 flag is 1. If so, execute step 4 to enter the blind alignment directional antenna reception stage, otherwise repeat step 3.

4. A point-to-point antenna blind alignment process synchronization method according to claim 3, characterized in that: The specific method of step 4 is: Set the flag information of the local site to Flag:{1,1,0}, calculate the communication direction angle according to the location information Location:{latitude,longitude} and ReLocation:{relatitude,relongitude}, then control the wide beam antenna and directional antenna of the local site to stop rotating at a constant speed, set them to directional mode, align the directional antenna to the communication direction angle, and send the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site.

5. A point-to-point antenna blind alignment process synchronization method according to claim 4, characterized in that: The specific method of step 5 is: The local site continuously determines whether it has received the blind alignment signal of the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modulation and demodulation unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, it determines whether the ReFlag2 flag is 1. If it is 1, the flag information of the local site is set to Flag:{1,1,1}, and a blind alignment signal is sent to the opposite site, including the location information Location:{latitude,longitude} and flag information Flag:{Flag1,Flag2,Flag3} of the local site, to notify the opposite site to switch the normal communication waveform, and then go to step 7; if the timeout time T is reached, timeout1 If the ReFlag2 flag bit is still not set to 1, execute step 6 to perform blind alignment and synchronization antenna scanning.

6. A point-to-point antenna blind alignment process synchronization method according to claim 5, characterized in that: The specific method of step 6 is: The local station calculates the communication direction angle, takes n points on the left and right of the communication direction angle, forms 2n+1 anchor points, and sets the step angle to θ bs The duration of stay at a single point is T period , start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag2 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and then go to step 7; If the timeout period T is reached timeout2 If the ReFlag2 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage.

7. A point-to-point antenna blind alignment process synchronization method according to claim 6, characterized in that: The specific method of step 7 is: The local site continuously determines whether it has received the blind alignment signal from the opposite site. After receiving it, the local site parses the location information and flag information of the opposite site through the modem unit and the service unit, and assigns the received location information and flag information to the location information ReLocation:{relatitude,relongitude} and the flag information ReFlag:{ReFlag1,ReFlag2,ReFlag3} respectively; then, the local site calculates the communication direction angle and determines whether the ReFlag3 flag is 1. If so, the local site rotates the directional antenna to the communication direction angle, sets the modem unit of the local site to the communication waveform, and the service to the normal working mode, completing the blind alignment process synchronization; If the timeout period T is reached timeout3 If the ReFlag3 flag is still not set to 1, a blind alignment antenna scan is performed: Take n points on the left and right of the communication direction angle to form 2n+1 anchor points, and set the step angle to θ bs The duration of stay at a single point is T period , start scanning in the forward direction from the communication direction angle. After the forward scan is completed, perform a reverse scan and receive the blind alignment signal of the opposite station at each anchor point. Repeat this cycle until the ReFlag3 flag of the local station is 1. At this time, set the flag information of the local station to Flag:{1,1,1}, and send a blind alignment signal to the opposite station, including the location information Location:{latitude,longitude} of the local station and the flag information Flag:{Flag1,Flag2,Flag3}, to notify the opposite station to switch to the normal communication waveform, and repeat step 7; If the timeout period T is reached timeout2 If the ReFlag3 flag is still not set to 1, reset the flag information Flag:{0,0,0}, ReFlag:{0,0,0} and the location information ReLocation:{0,0}, and go to step 2 to re-enter the blind alignment wide beam antenna reception stage.

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