CN108847880B - Satellite autonomous playback method for satellite data transmission X delay link data - Google Patents
Satellite autonomous playback method for satellite data transmission X delay link data Download PDFInfo
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- CN108847880B CN108847880B CN201810621282.5A CN201810621282A CN108847880B CN 108847880 B CN108847880 B CN 108847880B CN 201810621282 A CN201810621282 A CN 201810621282A CN 108847880 B CN108847880 B CN 108847880B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
Abstract
The invention relates to an on-satellite autonomous playback method of satellite data transmission X delay link data, which comprises the following steps: s1, calculating whether the satellite passes through a criterion latitude line; s2, judging whether the data transmission program control is allowed; s3, judging whether the satellite orbit is played back at the latitude criterion, and setting the ground station playback parameters; s4, judging whether the in-orbit satellite plays back or not; s5, calculating the record and count of the played ground station at the current time t; and S6, delaying data playback control. The method has the characteristics of simple on-satellite autonomous playback judgment and easy realization, realizes the on-orbit high-freedom adjustment of parameters of the satellite playback ground station, the satellite data playback area, the continuous playback orbit number and the like, and can deal with the special condition that the interval of the playback area is discontinuous in the satellite playback process.
Description
Technical Field
The invention relates to an autonomous playback method of data transmission data in the technical field of satellite housekeeping software, in particular to an on-satellite autonomous playback method of data of a satellite data transmission X delay link.
Background
The method for transmitting and replaying satellite data to the ground mainly comprises the following modes:
the first mode mainly depends on the ground to send real-time remote control instructions to control the on-off operation of each single machine of satellite data transmission to carry out the ground playback of data transmission data after the satellite enters the field, and the method has the defect that each time the data is played back, the ground related units are required to send instructions to participate;
the second mode mainly depends on the on-ground satellite-broadcasting program-controlled operation table to perform on-ground startup and shutdown operations of the on-satellite data transmission of each single machine for performing ground playback of data transmission data, and the mode has the defects that the startup and shutdown playback operations in a period of time still need to be calculated in advance by ground related units to complete playback time and send instructions for participation;
the third mode mainly depends on the satellite program control software to autonomously judge according to the playback requirement and condition and carry out the on-off operation on each single machine of the data transmission, thereby autonomously finishing the ground playback of the data transmission data.
In summary, the existing satellite data ground playback method has certain defects, so that a playback method which is simple in satellite autonomous playback judgment, easy to implement, high in the degree of freedom of playback ground station parameters and satellite data playback areas and capable of coping with special adjacent playback areas is needed.
Disclosure of Invention
The invention aims to provide an on-satellite autonomous playback method of satellite data transmission X delay link data, which has the characteristics of simple on-satellite autonomous playback judgment and easy realization, realizes the on-orbit high degree of freedom adjustment of parameters of a satellite playback ground station, a satellite data playback area, continuous playback orbit number and the like, and can cope with the special condition that the interval of the playback area is discontinuous in the satellite playback process.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an on-satellite autonomous playback method of satellite data transmission X delay link data comprises the following steps:
s1, calculating whether the satellite passes through a criterion latitude line;
the criterion latitude line is a preset geographical latitude value, when the orbit of the satellite subsatellite point rises and passes through the criterion latitude line, namely the current geographical latitude phi w of the satellite subsatellite point is more than or equal to the criterion latitude value, and the satellite subsatellite point storage geographical latitude phi wm is less than the criterion latitude value, the satellite passing criterion latitude mark LAT is assigned to be 1, otherwise, the satellite passing criterion latitude mark LAT is assigned to be 0; and then updating the variable storage geographical latitude phi wm to be the value of the current geographical latitude phi w of the variable.
S2, judging whether the data transmission program control is allowed;
and judging whether the data transmission program control is allowed according to the mark which can be annotated and modified on the ground, if so, executing the subsequent steps, otherwise, zero-setting the playback mark HF of the orbit satellite, the data transmission started mark KJ and the data transmission memory read sending mark STST.
S3, judging whether the satellite orbit is played back at the latitude criterion, and setting the ground station playback parameters;
when the satellite passes through the criterion latitude mark LAT and is 0, skipping the step, otherwise, carrying out the following procedures: firstly, emptying the ground station to play back the count, namely km is 0 and kp is 0; then, the playable ground station and the played back mark are assigned with zero STM (j) 0 and STP (j) 0, wherein the j ground station traverses all num ground stations; then judging whether the current geographical latitude lambda w is in a receivable geographical latitude STA (j) range or not for the jth ground station, if so, assigning a playable mark STM (j) 1 and a playable count km +1 for the ground station, otherwise, not operating, wherein the jth ground station traverses all num ground stations; and finally, judging whether the playable count km of the ground station is greater than zero, if so, assigning a local orbit satellite playback mark HF of 11, and otherwise, assigning 00.
S4, judging whether the in-orbit satellite plays back or not;
and judging whether the in-orbit satellite is played back or not according to the in-orbit satellite playback mark HF, if so, executing the subsequent steps, and otherwise, skipping the subsequent steps S5 and S6.
S5, calculating the record and count of the played ground station at the current time t;
when the jth ground playable flag stm (j) is 0, this step is skipped, otherwise the following procedure is performed: and calculating the elevation angle of the satellite relative to the ground station at the current moment t, and when the elevation angle hw (j) of the satellite relative to the ground station at the current moment is greater than a preset elevation angle Asta (j) and the played back mark STP (j) of the ground station is 0, assigning a played back count kp (kp + 1) and a played back mark STP (j) to 1 of the ground station, and otherwise, skipping the ground station operation, wherein the jth ground station traverses all num ground stations.
S6 delayed data playback control
When the X delayed link startup command has sent the flag KJ of 0, the following process is performed:
firstly, calculating the positioning information of a time t + TP satellite in a WGS-84 ground-fixed coordinate system, when the assigned elevation angle meets the requirement that the count nhw of a ground station is 0, and when the playable mark STM (j) of the jth ground station is 1, calculating the elevation angle of the time t + TP satellite relative to the ground station, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the time t + TP is greater than the preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, executing X delay link single machine starting operation after delaying the TP duration, and setting the amplitude mark KJ to 1, otherwise, skipping the operation;
when the X delayed link power-on command has sent the flag KJ to 1, the following process is performed:
when the assigned elevation meets the requirement that the ground station count nhw is 0, and when the playable mark STM (j) of the jth ground station is 1, calculating the elevation of the satellite relative to the ground station at the current moment t, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the current moment t is greater than a preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, and when the number transmission memory read-send flag STST is equal to 0, executing memory read operation and assigning the STST to be equal to 1, otherwise, skipping the operation;
when the elevation angle meets the requirement that the ground station count nhw is not more than 0, and when the number transmission memory read-send flag STST is equal to 1, executing memory read stop operation and assigning the STST to be 0, otherwise, skipping the operation;
and when the played back mark kp of the ground station is more than or equal to the playable mark km, executing the power-off operation of the X delay link single machine, assigning the X delay link power-on command sent mark KJ to be 0, and otherwise, skipping the operation.
Compared with the prior art, the invention has the following beneficial effects:
first, compared with the prior art that the method of performing longitude and latitude rectangular partition on a two-dimensional plane map is adopted, the method provided by the invention only performs longitude area range judgment on a criterion latitude line, and has the characteristics of simple on-satellite autonomous playback judgment and easy realization.
Secondly, the method provided by the invention can enable parameters such as satellite playback ground station parameters, satellite data playback areas, continuous playback track numbers and the like to be modified through ground notes, so that the method has the advantages of on-orbit high-freedom autonomous playback such as changeable ground station, adjustable ground station playback areas, controllable continuous playback track numbers and the like in the data playback process.
Thirdly, the method provided by the invention can only perform read-stop and read operations of the data transmission memory when two continuous playback areas are crossed, namely, the method can deal with the special condition that the interval of the playback areas is discontinuous in the satellite playback process, aiming at the problem that the hard requirement of reserved time exists when the data transmission single machine is started, so that the satellite playback process cannot be started or stopped in time when the two adjacent playback areas are relatively close.
Drawings
Fig. 1 is a main flow chart of an on-satellite autonomous playback method of satellite data transmission X delay link data of the present invention.
FIG. 2 is a flow chart of the present invention for calculating whether a satellite has passed a criterion latitudinal line.
Fig. 3 is a flow chart of the present invention for determining whether a satellite local track is played back at a criterion latitude and setting a ground station playback parameter.
Fig. 4 is a flowchart of the present invention for calculating the current time t played back ground station record and count.
Fig. 5 is a delayed data playback control flow diagram of the present invention.
Detailed Description
To further illustrate the on-satellite autonomous playback method of satellite data transmission X delay link data according to the present invention, a main flow chart of a specific implementation is shown in fig. 1, which is described as follows:
step one, calculating whether the satellite passes through a criterion latitude line
The process is shown in fig. 2, the criterion latitude is a preset geographical latitude value, when the orbit of the satellite subsatellite point rises and passes through the criterion latitude, namely the current geographical latitude phi w of the satellite subsatellite point is more than or equal to the criterion latitude value, and the satellite subsatellite point storage geographical latitude phi wm is less than the criterion latitude value, the satellite passing criterion latitude mark LAT is assigned to be 1, otherwise, the satellite passing criterion latitude mark LAT is assigned to be 0; and then updating the variable storage geographical latitude phi wm to be the value of the current geographical latitude phi w of the variable.
Step two, judging whether to allow data transmission program control
And judging whether the data transmission program control is allowed according to the mark which can be annotated and modified on the ground, if so, executing the subsequent steps, otherwise, zero-setting the playback mark HF of the orbit satellite, the data transmission started mark KJ and the data transmission memory read sending mark STST.
Step three, judging whether the satellite orbit is played back at the latitude of the criterion, and setting the ground station playback parameters
As shown in fig. 3, when the satellite passes the criterion latitude flag LAT and is 0, the step is skipped, otherwise, the following steps are performed: firstly, emptying the ground station to play back the count, namely km is 0 and kp is 0; then, the playable ground station and the played back mark are assigned with zero STM (j) 0 and STP (j) 0, wherein the j ground station traverses all num ground stations; then judging whether the current geographical latitude lambda w is in a receivable geographical latitude STA (j) range or not for the jth ground station, if so, assigning a playable mark STM (j) 1 and a playable count km +1 for the ground station, otherwise, not operating, wherein the jth ground station traverses all num ground stations; and finally, judging whether the playable count km of the ground station is greater than zero, if so, assigning a local orbit satellite playback mark HF of 11, and otherwise, assigning 00.
Step four, judging whether the in-orbit satellite replays
And judging whether the in-orbit satellite is played back or not according to the in-orbit satellite playback mark HF, executing subsequent steps if the in-orbit satellite is played back, and skipping the subsequent steps if the in-orbit satellite is not played back.
Step five, calculating the record and the count of the played ground station at the current moment t
As shown in fig. 4, when the jth terrestrial playback capable flag stm (j) is 0, this step is skipped, otherwise the following steps are performed: and calculating the elevation angle of the satellite relative to the ground station at the current moment t, and when the elevation angle hw (j) of the satellite relative to the ground station at the current moment is greater than a preset elevation angle Asta (j) and the played back mark STP (j) of the ground station is 0, assigning a played back count kp (kp + 1) and a played back mark STP (j) to 1 of the ground station, and otherwise, skipping the ground station operation, wherein the jth ground station traverses all num ground stations.
Step six, delaying data playback control
The flow chart is shown in figure 5, which,
when the X delayed link startup command has sent the flag KJ of 0, the following process is performed:
firstly, calculating the positioning information of a time t + TP satellite in a WGS-84 ground-fixed coordinate system, when the assigned elevation angle meets the requirement that the count nhw of a ground station is 0, and when the playable mark STM (j) of the jth ground station is 1, calculating the elevation angle of the time t + TP satellite relative to the ground station, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the time t + TP is greater than the preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, executing X delay link single machine starting operation after delaying the TP duration, and setting the amplitude mark KJ to 1, otherwise, skipping the operation;
when the X delayed link power-on command has sent the flag KJ to 1, the following process is performed:
when the assigned elevation meets the requirement that the ground station count nhw is 0, and when the playable mark STM (j) of the jth ground station is 1, calculating the elevation of the satellite relative to the ground station at the current moment t, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the current moment t is greater than a preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, and when the number transmission memory read-send flag STST is equal to 0, executing memory read operation and assigning the STST to be equal to 1, otherwise, skipping the operation;
when the elevation angle meets the requirement that the ground station count nhw is not more than 0, and when the number transmission memory read-send flag STST is equal to 1, executing memory read stop operation and assigning the STST to be 0, otherwise, skipping the operation;
and when the played back mark kp of the ground station is more than or equal to the playable mark km, executing the power-off operation of the X delay link single machine, assigning the X delay link power-on command sent mark KJ to be 0, and otherwise, skipping the operation.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. Those skilled in the art will appreciate that the details of the invention not described in detail in this specification are well within the skill of those in the art.
Claims (1)
1. An on-satellite autonomous playback method of satellite data transmission X delay link data is characterized in that: the method comprises the following steps:
s1, calculating whether the satellite passes through a criterion latitude line; the criterion latitude line is a preset geographic latitude value, when the satellite intersatellite point orbit rise passes through the criterion latitude line, the satellite passage criterion latitude mark LAT is assigned to be 1, otherwise, the satellite passage criterion latitude mark LAT is assigned to be 0; then updating the variable storage geographical latitude phi wm to be the value of the current geographical latitude phi w of the variable;
s2, judging whether the data transmission program control is allowed; judging whether the data transmission program control is allowed according to the mark which can be annotated and modified on the ground, if so, executing the subsequent steps, otherwise, zero-setting the playback mark HF of the orbit satellite, the data transmission started mark KJ and the data transmission memory read sending mark STST;
s3, judging whether the satellite local orbit is played back on a criterion latitude line, and setting ground station playback parameters; when the satellite passes through the criterion latitude mark LAT and is 0, skipping the step, otherwise, carrying out the following procedures: firstly, emptying the ground station to play back the count, namely km is 0 and kp is 0; then, the jth ground station can play back STM (j) 0 and STP (j) 0 assigned with the played back mark, wherein the jth ground station traverses all num ground stations; then judging whether the current geographic latitude lambda w is in a receivable geographic latitude STA (j) range or not for the jth ground station, if so, assigning a playable mark STM (j) 1 and a playable count km +1 for the jth ground station, otherwise, not operating, wherein the jth ground station traverses all num ground stations; finally, judging whether the playable count km of the ground station is greater than zero, if so, assigning a local orbit satellite playback mark HF of 11, otherwise, assigning 00;
s4, judging whether the in-orbit satellite is played back or not according to the in-orbit satellite playback mark HF, if so, executing the subsequent steps, otherwise, skipping the subsequent steps S5 and S6;
s5, calculating the elevation angle and the playback count of the played back ground station at the current time t; when the playable mark STM (j) of the jth ground station is 0, the step is skipped, otherwise, the following process is performed: calculating the elevation angle of the satellite relative to the ground station at the current moment t, and when the elevation angle hw (j) of the satellite relative to the ground station at the current moment is greater than a preset elevation angle Asta (j) and the jth ground station played back mark STP (j) is 0, assigning a ground station played back count kp ═ kp +1 and a jth ground station played back mark STP (j) ═ 1, and otherwise, skipping the operation of the ground station, wherein the jth ground station traverses all num ground stations;
s6, controlling the playback of the delayed data; when the data transmission started flag KJ is 0, the following process is performed:
firstly, calculating the positioning information of a time t + TP satellite in a WGS-84 ground-fixed coordinate system, when the assigned elevation angle meets the requirement that the count nhw of a ground station is 0, and when the playable mark STM (j) of the jth ground station is 1, calculating the elevation angle of the time t + TP satellite relative to the ground station, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the time t + TP is greater than the preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, executing X delay link single machine startup operation after delaying the TP duration, assigning a data transmission startup mark KJ to 1, and otherwise skipping the operation;
when the data transmission started flag KJ is 1, the following process is performed:
when the elevation angle satisfies the requirement that the ground station count nhw is 0, and when the playable mark stm (j) of the jth ground station is 1, calculating the elevation angle of the satellite relative to the ground station at the current time t, otherwise, skipping the operation;
when the elevation angle hw (j) of the satellite relative to the ground station at the current moment t is greater than a preset elevation angle Asta (j), the assigned elevation angle meets the requirement that the count nhw of the ground station is nhw +1, otherwise, the operation is skipped, wherein the jth ground station traverses all num ground stations;
when the elevation angle meets the requirement that the ground station count nhw is greater than 0, and when the number transmission memory read-send flag STST is equal to 0, executing memory read operation and assigning the STST to be equal to 1, otherwise, skipping the operation;
when the elevation angle meets the requirement that the ground station count nhw is not more than 0, and when the number transmission memory read-send flag STST is equal to 1, executing memory read stop operation and assigning the STST to be 0, otherwise, skipping the operation;
and when the played back count kp of the ground station is more than or equal to the playable count km, executing the shutdown operation of the X delay link single machine, and assigning a value of the data transmission started flag KJ to be 0, otherwise, skipping the operation.
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