CN114584992A - Measurement and control station alternative station address acquisition method and measurement and control station layout planning method - Google Patents
Measurement and control station alternative station address acquisition method and measurement and control station layout planning method Download PDFInfo
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Abstract
The invention provides a method for acquiring alternative sites of a measurement and control station, which comprises the following steps: s1, acquiring a high dynamic terminal target track corresponding to the distribution of the measurement and control station, uniformly segmenting the high dynamic terminal target track, and generating a preset number of alternative station addresses for each segment; s2, adjusting the antenna direction of the measurement and control station of each alternative station address to be the optimal direction, so that the measurement and control station of the alternative station address can obtain the antenna direction with the maximum communication time length to the high dynamic terminal; s3, counting the communicable time periods of each candidate station, wherein the communicable time periods of the candidate stations are the time periods which simultaneously meet the communication distances between the measurement and control station and the high-dynamic terminal, the time period when the high-dynamic terminal antenna can cover the measurement and control station, and the time period when the measurement and control station antenna can cover the high-dynamic terminal; and S4, selecting a preset number of alternative station addresses according to the size of all the alternative station addresses according to the communicable time period.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to the field of communication between a high dynamic terminal and a measurement and control station, and more particularly to a measurement and control station alternative station address acquisition method and a measurement and control station layout planning method for the high dynamic terminal.
Background
The measurement and control station is a device for providing functions of test control, data acquisition, data recording and the like for a high dynamic terminal test system, a reasonable and effective measurement and control station layout scheme can improve the communication duration between the measurement and control station and a high dynamic terminal, obtain larger data flow, provide better data support for the high dynamic terminal test system, and the more complete the high dynamic terminal test system is tested, the more beneficial the improvement of the safety of practical implementation is. For data acquisition and data recording, the core problem of the layout of the measurement and control station is the communication problem, and factors influencing the communication comprise two factors of a high dynamic terminal and the measurement and control station.
From the perspective of a highly dynamic terminal, there are a plurality of factors that seriously affect the communication performance, mainly including: 1. the high dynamic terminal has extremely high flying height which can reach hundreds of kilometers, and under the height, the terminal antenna is difficult to keep communication with a ground measurement and control station due to limited power; 2. the high dynamic terminal has extremely high flying speed, the highest speed can reach Mach 10-20, the average speed can reach Mach 4-6, and under the high speed, larger Doppler frequency shift can be brought to communication; 3. the attitude of the high-dynamic terminal is constantly changed during flying, including pitching, yawing and rolling changes, wherein the largest change is the change of pitching, the change of the attitude of the terminal directly influences the change of the direction pointed by the center of the antenna, and the antenna is not pointed to a measurement and control station easily, so that a communication link is interrupted.
From the perspective of the measurement and control station, there are also a plurality of factors that affect the communication performance of the system, mainly including: 1. due to the influence of geographical environment, measurement and control stations can not be arranged in any places, such as mountainous regions and river flows, the geographical positions are different, the coverage time of the high-dynamic terminal antenna is different, the communication time of the high-dynamic terminal antenna is further influenced, and the communication link performance of areas with more shelters such as a forest can be influenced; 2. the rotation speed of the antenna of the measurement and control station is slow, the flying speed of the terminal is extremely high, and the antenna of the measurement and control station cannot guarantee that the high dynamic terminal is always followed; 3. the coverage of the antenna of the measurement and control station in a three-dimensional space is limited, which shows that the coverage field angle is limited, the coverage distance is limited, and the antenna can only cover a terminal moving at a high speed for a short time.
In the prior art, in practice, the layout of the measurement and control station often sets alternative station addresses according to experience of operators, then the final scheme is considered and selected on the spot, the problem of tracking and measuring accuracy is more concerned, and influence on a communication link is not considered in a focused manner, so that the laid measurement and control station cannot ensure good communication quality. In the field of the layout of the measurement and control stations facing high dynamic terminals, the layout problem is more focused on tracking measurement precision, and a geometric scheme for the layout of the measurement and control stations is generated through some calculations, so that the purpose of improving the measurement precision of measurement and control equipment is achieved.
Some researchers also obtain the layout scheme of the measurement and control station in advance through a simulation method and then implement the layout scheme. In the whole high-dynamic terminal communication system, in order to complete the simulation calculation of a communication link, modeling needs to be performed on a measurement and control station and a high-dynamic terminal, and then a series of simulation calculations are performed. In the simulation modeling part, more organizations or mechanisms have made corresponding research work, but the simulation modeling method depends on input excessively, carries out simulation evaluation on a communication system according to input data, can only be used for evaluating the quality of a layout scheme, has few factors considered in practice, mostly does not consider the terrain factors and the data unification problem of each coordinate system, is difficult to be used for planning the layout scheme, cannot accurately predict the performance of a terminal communication link, and cannot ensure the communication efficiency of a measurement and control device and a high-dynamic terminal.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of the prior art and provide a measurement and control station alternative station address acquisition method and a measurement and control station layout planning method.
According to a first aspect of the present invention, a method for acquiring an alternative site of a measurement and control station is provided, which includes: s1, acquiring a high dynamic terminal target track corresponding to the distribution of the measurement and control station, uniformly segmenting the high dynamic terminal target track, and generating a preset number of alternative station addresses for each segment; s2, adjusting the antenna direction of the measurement and control station of each alternative station address to be the optimal direction, so that the measurement and control station of the alternative station address can obtain the antenna direction with the maximum communication time length to the high dynamic terminal; s3, counting the communicable time periods of each alternative station, wherein the communicable time periods of the alternative stations are the time periods which simultaneously meet the communication distance between the measurement and control station and the high dynamic terminal, the time period when the high dynamic terminal antenna can cover the measurement and control station, and the time period when the measurement and control station antenna can cover the high dynamic terminal; and S4, selecting a preset number of alternative station addresses according to the size of all the alternative station addresses according to the communicable time period. Preferably, the method further comprises: and S5, when judging that the alternative station address selected in S4 has the site which can not be reached by the landform, diffusing the alternative station address which can not be reached by the landform to the two sides of the track by taking each alternative station address which can not be reached by the landform as the center so as to select the final alternative station address which can be reached by the landform.
Preferably, in the step S1, each segment is 1 longitude distance.
Preferably, the preset number of the candidate station addresses of each segment is an integer greater than or equal to 2.
In some embodiments of the present invention, the step S2 includes: s21, pointing the azimuth angle of the antenna of the measurement and control station to the flying side of the high dynamic terminal, adjusting the change step length of the pitch angle of the antenna of the measurement and control station from large to small, and executing the following steps S22 and S23 for each adjustment; s22, constructing a first space vector based on the antenna direction of the measurement and control station and the position of the measurement and control station, wherein the first space vector is a space vector of the position coordinate of the alternative station site of the measurement and control station pointed by the coordinate pointed by the antenna of the measurement and control station; s23, constructing a second space vector set based on the position of the high dynamic terminal and the position of the measurement and control station, wherein the second space vector set is a set of second space vectors pointing to the position coordinates of the alternative station address of the measurement and control station from the position coordinates of the high dynamic terminal at each moment; s24, calculating the time length of the measurement and control station meeting the communication condition with the high-dynamic terminal at the candidate station site based on the first space vector and each second space vector in the second space vector set, wherein the condition that the measurement and control station meets the communication condition with the high-dynamic terminal at the candidate station site means that the antenna gain attenuation corresponding to the included angle between the first space vector and the second space vector is less than or equal to a preset antenna gain attenuation threshold; and S24, fixing the antenna direction of the measurement and control station at the corresponding direction of the measurement and control station when the measurement and control station meets the communication condition with the high dynamic terminal and the communication duration is maximum.
Preferably, in the step S2, after the positions of the candidate stations of the measurement and control station and the position of the high dynamic terminal at any time and the antenna direction of the measurement and control station are converted into a preset unified coordinate system, the antenna direction of the measurement and control station of each candidate station is adjusted to the optimal direction.
Preferably, the preset antenna gain attenuation threshold is 3 dB.
Preferably, the step S3 includes, for each alternative site, performing the following steps: s31, respectively calculating a time period according with the communication distance between the measurement and control station and the high dynamic terminal, a time period when the antenna of the high dynamic terminal can cover the measurement and control station, and a time period when the antenna of the measurement and control station can cover the high dynamic terminal, wherein the time period according with the communication distance between the measurement and control station and the high dynamic terminal is a time period when the distance between the measurement and control station and the high dynamic terminal is smaller than the smaller value of the maximum coverage distance of the antenna of the high dynamic terminal and the maximum coverage distance of the antenna of the measurement and control station; the time period in which the high-dynamic terminal antenna can cover the measurement and control station is the time period in which the included angle between the first space vector and the second space vector is smaller than the half-wave beam angle of the high-dynamic terminal antenna; the time period when the antenna of the measurement and control station can cover the high-dynamic terminal is the time period when the included angle between the first space vector and the second space vector is smaller than the half-wave beam angle of the antenna of the measurement and control station; and S32, calculating the intersection of the time period according with the communication distance between the measurement and control station and the high dynamic terminal, the time period when the antenna of the high dynamic terminal can cover the measurement and control station, and the time period when the antenna of the measurement and control station can cover the high dynamic terminal.
In some embodiments of the present invention, the step S5 includes, with each candidate station selected in the step S4 as a center, diffusing the candidate station to both sides of the flight path by using a block simulated annealing method to select a final candidate station corresponding to each candidate station, where diffusing the candidate station to one side of the flight path with each candidate station as a center includes: s51, moving the current alternative station to one side of the track until the terrain can reach; s52, calculating a corresponding communicable time period when the current candidate station address moves to the new position, when the corresponding communicable time period when the current candidate station address moves to the new position is larger than or equal to the corresponding communicable time period when the current candidate station address does not move, moving the current candidate station address to the new position and executing the step S51, and when the corresponding communicable time period when the current candidate station address moves to the new position is smaller than the corresponding communicable time period when the current candidate station address does not move, directly entering the step S53; and S53, calculating the system temperature, wherein the system temperature is the difference value between the communication time interval corresponding to the original position of the current standby station and the communication time interval corresponding to the current standby station when the current standby station moves to the new position, the movement is finished when the system temperature is less than the set lowest temperature, and when the system temperature is greater than or equal to the set lowest temperature, the system temperature is updated according to the preset annealing rate and the step S51 is executed.
According to a second aspect of the present invention, there is provided a measurement and control station layout planning method, including: b1, acquiring measurement and control station alternative station sites by adopting the method of the first aspect of the invention, wherein each alternative station site comprises information of an azimuth angle and a pitch angle of an antenna of the measurement and control station; b2, planning the layout of the measurement and control station according to the alternative station address position, the azimuth angle and the pitch angle of the antenna of the measurement and control station obtained in the step B1.
Compared with the prior art, the invention has the advantages that: the invention simulates the flight path and the communication link of the high dynamic terminal from the global angle, sets the antenna performance constraint and the channel constraint of the high dynamic terminal and the measurement and control equipment, selects the approximate position which is most suitable for station arrangement, then sets the terrain factor on the basis, and adopts the optimization algorithm to solve the optimal station arrangement and the measurement and control equipment antenna pointing direction, thereby having the advantages of high automation degree, accurate arrangement, long communication time of the terminal and the measurement and control equipment and the like.
Drawings
Embodiments of the invention are further described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of communication between a high dynamic terminal and a measurement and control station according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a highly dynamic terminal position and attitude over time according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a measurement and control station layout planning method according to an embodiment of the invention;
fig. 4 is a schematic diagram of a communicable time period calculation according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention aims to solve the problem of how to select the site and set the distribution of the antenna direction of a ground measurement and control station in the flight process of a high dynamic terminal. The method takes the communication duration as an optimization target, calculates the antenna coverage of the high dynamic terminal based on the motion track and the attitude of the high dynamic terminal, and plans a reasonable layout scheme by combining the communication conditions of the measurement and control station, the terrain and other constraints on the basis.
As mentioned in the background art, the factors affecting the communication of the measurement and control station include two factors, namely, a high dynamic terminal and the measurement and control station, and the track and the posture of the high dynamic terminal are difficult to change and adjust, so that under the condition of many limitations, the time length of the measurement and control station for collecting and recording the data of the high dynamic terminal can be prolonged only from the perspective of laying the measurement and control station. The existing layout method of the measurement and control equipment often sets the alternative station address according to the experience of operators and then inspects and selects the final scheme on the spot, but the layout method cannot accurately predict the performance of the terminal communication link and cannot ensure the communication efficiency of the measurement and control equipment and the high-dynamic terminal. Therefore, the invention improves the communication time of the measurement and control station and the high dynamic terminal by screening out the proper measurement and control station position and the proper measurement and control station antenna pointing angle in advance through simulation. Further, aiming at the problems, from the perspective of improving communication time, the invention screens the alternative sites of the measurement and control station and lays the measurement and control station, and by constructing a measurement and control station model, a measurement and control station antenna model and a high dynamic terminal model, unifying the models under a WGS84 coordinate system, calculating the beam coverage between the measurement and control station and the terminal, constructing constraint conditions such as antenna constraint, terrain constraint and the like, completing the layout planning of the measurement and control station, realizing the simulation of a high dynamic terminal flight path and a communication link from the global perspective, setting the antenna performance constraint and the channel constraint of the high dynamic terminal and the measurement and control equipment, selecting the approximate position most suitable for the station layout, then setting the terrain factors on the basis, and adopting an optimization algorithm to optimally lay the sites and the antenna direction of the measurement and control equipment.
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1, a system of a measurement and control station and a high dynamic terminal is provided, a beam coverage area and a distance of the high dynamic terminal are limited, and a pointing direction of the high dynamic terminal changes with a posture change of the terminal, as shown in fig. 1, at times t1, t2, t3, and t4, a posture of the high dynamic terminal changes, and an antenna coverage area of the high dynamic terminal also changes accordingly. The actual arrangement of the measurement and control stations comprises a plurality of measurement and control stations, and each ground measurement and control station is provided with an antenna pointing to the air, so that communication service is provided for the high-dynamic terminal.
The invention takes the maximum communication time as a performance index, analyzes the communication link of the high dynamic terminal and the measurement and control station, establishes a terminal and measurement and control station model, and comprises the following steps: the system comprises a high dynamic terminal model, a measurement and control station model and a measurement and control station antenna model.
1) High dynamic terminal model
In order to characterize and calculate the motion model of the high dynamic terminal, the invention establishes a terminal model shown as the following formula so as to express the flight path track of the high dynamic terminal in a data set mode, thereby facilitating simulation analysis:
M＝(T,V,Pm,Att,Ant)
wherein, T represents a terminal movement time, V represents a speed of the terminal at each time within T time, P represents a position of the terminal at each time within T time, Att represents a posture of the terminal at each time within T time, Ant represents an antenna model adopted by the terminal, and covers a terminal antenna installation position, an antenna direction, an antenna gain and the like, as shown in fig. 2(a), a typical high dynamic terminal position change trend with time, as shown in fig. 2(b), a typical high dynamic terminal posture change trend with time, and the model represents a corresponding high dynamic terminal track data set.
2) Measurement and control station model
In order to characterize and calculate the position and antenna coverage of the measurement and control station, a model of the measurement and control station is established as follows:
F＝(Pf,Azi,Ele,Ant)
wherein, P represents the position of the measurement and control station, such as longitude and latitude and height, Azi and Ele represent the center pointing direction of the antenna of the measurement and control station, that is, azimuth angle and pitch angle, Ant represents the antenna model adopted by the measurement and control station, and covers the antenna gain of the measurement and control station, and the measurement and control station model corresponds to the positions corresponding to all the measurement and control stations, the center pointing direction of the antenna of each position measurement and control station, and the data set of the antenna model.
3) Antenna model
The antenna model adopts a simple model of half-wave beam angle and distance:
Ant＝(θf,df)
the antenna can normally work within the specified half-wave beam angle and distance range, namely, under the premise that the antenna gain attenuation is not more than 3dB from the center of the antenna, the antenna can normally work within the half-wave beam angle and distance range, and can provide service for a high-dynamic terminal within a coverage range. In the case of a given antenna model, an antenna gain table may be obtained, and the antenna gain may be queried according to the field angle, which is not described in detail herein.
After the basic models of the measurement and control station, the high dynamic terminal and the antenna are established, the invention solves the layout planning problem of the measurement and control station under the constraint condition, as shown in fig. 2, the concrete solving process is as follows:
step 1: and responding to the requirement of the measurement and control station to be laid, acquiring a high dynamic terminal target track laid by the measurement and control station, and generating a certain amount of alternative station addresses according to the high dynamic terminal track. Where the terminal track is evenly segmented, e.g., each segment is approximately 1 longitude distance, and each segment generates the same number of sites. For example, if the terminal flies 10 longitudes east west-east, 3 candidate sites can be generated for each longitude under the terminal's track, i.e., a total of 30 candidate sites. On the basis of constructing a measurement and control station model, a high dynamic terminal model and a measurement and control station antenna, acquiring a high dynamic terminal track is equivalent to acquiring a high dynamic terminal data set corresponding to a section of track, and the data set is arranged according to the mode of the high dynamic terminal model. The generated alternative station address is equivalent to that the measurement and control station data containing the station address is generated at each alternative station address to form a measurement and control station data set and a measurement and control station antenna data set.
Step 2: and calculating the optimal direction of the antenna of the measurement and control station of each alternative station site, wherein the optimal direction refers to a direction adopted by the antenna when the measurement and control station is at the station site compared with other directions, so that the antenna of the measurement and control station can cover the high-dynamic terminal for a longer time. According to an embodiment of the present invention, the step 2 includes performing, for each alternative site:
step 21: converting the position data of the measurement and control station and the high dynamic terminal acquired in the step 1 into a unified coordinate system, for example, a WGS84 coordinate system, and using the position data respectively as (x)f，yf，zf) Indicating measurement and control station location, (x)m，ym，zm) And represents the position of the high dynamic terminal at any time.
Step 22: establishing a carrier coordinate system based on the measurement and control station, and converting the antenna pointing direction into a WGS84 coordinate system (x) according to the antenna pointing direction (Azi, Ele) of the measurement and control stationa，ya，za) Then based on the measurement and control station position (x)f，yf，zf) Constructing a first space vector:
step 23: according to the position of the measurement and control station and the position (x) of the high dynamic terminal at any timem，ym，zm) Constructing a second space vector:
step 24: and calculating the time length of the measurement and control station capable of covering the high-dynamic terminal. Specifically, calculating
And
angle θ of (c):
obtaining the antenna gain value (inquiring the antenna gain table corresponding to the antenna model) of the direction according to the antenna model so as to judge the communication capability of the antenna model, and calculating theta by secondtGain is obtained by table lookup, the reduction of gain attenuation to 3dB meets communication conditions, and the analysis and statistics of the coincidence of the high dynamic terminal and a measurement and control station in the motion process (namely in the half-power wave beam range)
And
angle of (theta)tWithin the half-power beam angle range corresponding to the antenna model), the communication duration can be obtained through accumulation.
Step 25: and fixing the azimuth angle of the antenna of the measurement and control station to point to the flying side of the terminal, adjusting the pitch angle change step length from large to small, adjusting the pitch angle, repeating the steps 22 to 24, and performing iterative calculation to obtain the optimal pointing angle of the antenna of the measurement and control station, which corresponds to the maximum communication time of the terminal, of the measurement and control station.
And 3, step 3: and counting the communicable time periods of each alternative station, wherein the communicable time periods of the alternative stations are the time periods which simultaneously meet the communication distance between the measurement and control station and the high dynamic terminal, the time period for the high dynamic terminal antenna to cover the measurement and control station, and the time period for the measurement and control station antenna to cover the high dynamic terminal. According to an embodiment of the present invention, the step 3 includes performing, for each alternative site:
step 31: calculating the distance d between the high dynamic terminal and the measurement and control station in the flight processtThe maximum coverage distance of the terminal antenna is dmThe maximum coverage distance of the antenna of the measurement and control station is dfThe time period corresponding to the communication distance is Td＝{t|(dt＜min(df，dm))}
Step 32: the semi-wave beam angle of the high dynamic terminal antenna is thetamUnder the condition of not considering the distance, calculating the beam coverage of the high dynamic terminal in the flight process, wherein the high dynamic terminal beam can cover the time period T of the alternative station sitem＝{t|(θt＜θm)}。
Step 33: the half-wave beam angle of the antenna of the measurement and control station is thetafAnd under the condition of not considering the distance, calculating the beam coverage of the measurement and control station, wherein the time period from the antenna of the measurement and control station to the terminal is Tf＝{t|(θt＜ θf)}。
Step 34: summarizing the time periods between the steps 31 and 33, as shown in fig. 4, the time periods which simultaneously accord with the communication distances between the measurement and control station and the high dynamic terminal, the time period in which the antenna of the measurement and control station can cover the terminal, and the time period in which the antenna of the terminal can cover the measurement and control station are counted, and the time period is a communicable time period:
T＝Td∩Tm∩Tf
and 4, step 4: and sorting the alternative station addresses according to the communication time period from large to small, and selecting the alternative station addresses sorted in the front according to the preset number requirement of the alternative station addresses.
And 5: taking each alternative station as a center, considering the reachable state and the unreachable state of the terrain, respectively diffusing and selecting the final alternative station to the two sides of the flight path by using a block simulated annealing algorithm, wherein the step towards one side is as follows:
step 51: moving the alternative station to one side of the track, and if the terrain is not reachable, continuing to move to obtain a new position of the current alternative station;
step 52: using the step 2 and the step 3 to obtain a communicable time length T' between the new position of the measurement and control station and the high dynamic terminal, wherein the communicable time length corresponding to the high dynamic terminal when the current alternative station address does not move to the new position of the measurement and control station is T;
step 53: if T 'is more than or equal to T, accepting the movement, namely moving the current alternative site to a new position, repeating the step 5 until the end, and if T' is less than T, entering the step 54;
step 54: calculating the temperature Temp of the system as T-T', if the temperature Temp of the system is less than the set lowest temperature TempminIf yes, ending the movement of the current alternative station address; and otherwise, updating the system temperature Temp ═ r Temp, and repeating the step 5 until the movement is completed, wherein r is the preset annealing rate, and the smaller r is, the faster the system is cooled down.
And 6: and summarizing data, sequencing according to the communication time, counting data such as site positions, site antenna azimuth angles, pitch angles and the like, and giving a final site layout planning scheme.
From the above embodiments it can be seen that:
1. the invention establishes a communication efficiency evaluation system. The invention takes the communication duration as a performance index, carries out unified modeling on a high dynamic terminal, an antenna, a measurement and control station and a measurement and control station antenna in a three-dimensional space, calculates the coverage of the terminal antenna and the measurement and control station antenna at all times under a WGS84 coordinate system, and calculates and obtains the communicable time period and the accumulated communication duration between the terminal antenna and the measurement and control station antenna according to the result of link budget.
2. The invention provides a method for calculating the optimal direction of an antenna of a measurement and control station. For a measurement and control station, the situation that the antenna steering cannot rotate along with a high dynamic terminal exists, and the fixed antenna is often selected to point. The invention provides a method for calculating the optimal antenna direction by taking a communication efficiency evaluation system as a standard under the condition of appointing a station address of a measurement and control station on the basis of high dynamic terminal path planning.
3. The invention designs a set of site selection and layout method for a measurement and control station. And on the basis of high dynamic terminal path planning, setting step length according to the flight distance, and generating a plurality of alternative station addresses. And then setting the antenna performance constraint and channel constraint of the terminal and the measurement and control equipment, adjusting the antenna orientation of the measurement and control equipment, evaluating each alternative station and the communication efficiency of the terminal, and selecting a plurality of better stations. And finally, increasing terrain restraint, improving site selection precision, expanding the alternative station sites to the periphery, calculating by adopting a block simulated annealing algorithm to obtain optimal station sites and corresponding antenna directions, and generating an analysis report.
In general, the invention provides a full-automatic measurement and control station layout planning method facing a high dynamic terminal, which plans the layout of the measurement and control station by taking communication efficiency as an evaluation index and taking the path planning of a known high dynamic terminal as a premise. In the planning process, a track model, an attitude model and a beam model of the high dynamic terminal are established for the high dynamic terminal, a space channel model is established for a wireless channel, a position model and an antenna model of a terminal of a measurement and control station are established for the measurement and control station, a terrain constraint condition is set for a terrain factor, and a block simulated annealing algorithm is adopted to select a station address, so that long-time communication between the measurement and control station and the terminal is guaranteed, and the method has a high application value.
It should be noted that, although the steps are described in a specific order, it is not meant that the steps must be executed in the specific order, and in fact, some of the steps may be executed concurrently or even in a different order as long as the required functions are achieved.
The present invention may be a system, method and/or computer program product. The computer program product may comprise a computer readable storage medium having computer readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention.
The computer readable storage medium may be a tangible device that retains and stores instructions for use by an instruction execution device. The computer readable storage medium may include, for example, but is not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (12)
1. A method for acquiring alternative station addresses of a measurement and control station is characterized by comprising the following steps:
s1, acquiring a high dynamic terminal target track corresponding to the distribution of the measurement and control station, uniformly segmenting the high dynamic terminal target track, and generating a preset number of alternative station addresses for each segment;
s2, adjusting the antenna direction of the measurement and control station of each alternative station address to be the optimal direction, so that the measurement and control station of the alternative station address can obtain the antenna direction with the maximum communication time length to the high dynamic terminal;
s3, counting the communicable time periods of each candidate station, wherein the communicable time periods of the candidate stations are the time periods which simultaneously meet the communication distances between the measurement and control station and the high-dynamic terminal, the time period when the high-dynamic terminal antenna can cover the measurement and control station, and the time period when the measurement and control station antenna can cover the high-dynamic terminal;
and S4, selecting a preset number of alternative station addresses according to the size of all the alternative station addresses according to the communicable time period.
2. The method of claim 1, further comprising:
and S5, when judging that the terrain inaccessible site exists in the candidate sites selected in S4, diffusing the candidate sites to the two sides of the track by taking each terrain inaccessible site as the center to select the final terrain accessible site.
3. The method according to claim 2, wherein in step S1, each segment is 1 longitude distance.
4. The method of claim 2, wherein the preset number of candidate site per segment is an integer greater than or equal to 2.
5. The method according to claim 2, wherein the step S2 includes:
s21, pointing the azimuth angle of the antenna of the measurement and control station to the flying side of the high dynamic terminal, adjusting the change step length of the pitch angle of the antenna of the measurement and control station from large to small, and executing the following steps S22 and S23 for each adjustment;
s22, constructing a first space vector based on the direction of the antenna of the measurement and control station and the position of the measurement and control station, wherein the first space vector is a space vector of the position coordinate of the candidate station address of the measurement and control station pointed by the antenna of the measurement and control station;
s23, constructing a second space vector set based on the position of the high dynamic terminal and the position of the measurement and control station, wherein the second space vector set is a set of second space vectors pointing to the position coordinates of the alternative station address of the measurement and control station from the position coordinate of the high dynamic terminal at each moment;
s24, calculating the time length of the measurement and control station meeting the communication condition with the high-dynamic terminal at the candidate station site based on the first space vector and each second space vector in the second space vector set, wherein the condition that the measurement and control station meets the communication condition with the high-dynamic terminal at the candidate station site means that the antenna gain attenuation corresponding to the included angle of the first space vector and the second space vector is less than or equal to a preset antenna gain attenuation threshold;
and S24, fixing the antenna direction of the measurement and control station at the corresponding direction of the measurement and control station when the measurement and control station meets the communication condition with the high dynamic terminal and the communication duration is maximum.
6. The method according to claim 5, wherein in the step S2, the candidate sites of the measurement and control station, the position of the high dynamic terminal at any time, and the antenna orientation of the measurement and control station are converted into a preset unified coordinate system, and then the antenna orientation of the measurement and control station of each candidate site is adjusted to the optimal orientation.
7. The method of claim 5, wherein the predetermined antenna gain attenuation threshold is 3 dB.
8. The method according to claim 5, wherein the step S3 includes the following steps for each alternative site:
s31, respectively calculating a time period according with the communication distance between the measurement and control station and the high dynamic terminal, a time period when the antenna of the high dynamic terminal can cover the measurement and control station, and a time period when the antenna of the measurement and control station can cover the high dynamic terminal, wherein the time period according with the communication distance between the measurement and control station and the high dynamic terminal is a time period when the distance between the measurement and control station and the high dynamic terminal is smaller than the smaller value of the maximum coverage distance of the antenna of the high dynamic terminal and the maximum coverage distance of the antenna of the measurement and control station; the time period when the high-dynamic terminal antenna can cover the measurement and control station is a time period when the included angle between the first space vector and the second space vector is smaller than the half-wave beam angle of the high-dynamic terminal antenna; the time period that the antenna of the measurement and control station can cover the high-dynamic terminal is the time period that the included angle between the first space vector and the second space vector is smaller than the half-wave beam angle of the antenna of the measurement and control station;
and S32, calculating the intersection of the time period according with the communication distance between the measurement and control station and the high dynamic terminal, the time period when the antenna of the high dynamic terminal can cover the measurement and control station, and the time period when the antenna of the measurement and control station can cover the high dynamic terminal.
9. The method according to claim 2, wherein the step S5 comprises using a block simulated annealing method to spread the candidate sites selected in the step S4 to both sides of the track respectively to select the final candidate site corresponding to each candidate site, wherein the step S5 comprises the following steps:
s51, moving the current alternative station to one side of the track until the terrain can reach;
s52, calculating a corresponding communicable time period when the current candidate station address moves to the new position, when the corresponding communicable time period when the current candidate station address moves to the new position is greater than or equal to the corresponding communicable time period when the current candidate station address does not move, moving the current candidate station address to the new position and executing the step S51, and when the corresponding communicable time period when the current candidate station address moves to the new position is smaller than the corresponding communicable time period when the current candidate station address does not move, directly entering the step S53;
and S53, calculating the system temperature, wherein the system temperature is the difference value between the communication time interval corresponding to the original position of the current standby station and the communication time interval corresponding to the current standby station when the current standby station moves to the new position, the movement is finished when the system temperature is lower than the set lowest temperature, and when the system temperature is higher than or equal to the set lowest temperature, the system temperature is updated according to the preset annealing rate and the step S51 is executed.
10. A layout planning method for a measurement and control station is characterized by comprising the following steps:
b1, acquiring measurement and control station alternative station sites by adopting the method of any one of claims 1 to 9, wherein each alternative station site comprises information of an azimuth angle and a pitch angle of an antenna of the measurement and control station;
b2, planning the layout of the measurement and control station according to the alternative station address position, the azimuth angle and the pitch angle of the antenna of the measurement and control station obtained in the step B1.
11. A computer-readable storage medium, having stored thereon a computer program executable by a processor for performing the steps of the method of any one of claims 1-9 or 10.
12. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to carry out the steps of the method of any of claims 1-9 or 10.
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