A method and apparatus for zero-value ergodic measurement of satellite ground station equipment combination

Abstract

This invention discloses a method and apparatus for zero-value traversal measurement of satellite ground station equipment combinations. The method includes: selecting one set of links as the initial link and determining the zero value of the ground station equipment combination corresponding to the initial link; based on the initial link, performing a partial zero-value combination traversal test on the ground station equipment of the satellite ground station system; obtaining the relative difference of zero values ​​for each input segment of adjacent ground station equipment groups in the satellite ground station system based on the zero-value combination traversal test results; and calculating the zero value of the target ground station equipment combination based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of zero values ​​for each input segment of adjacent ground station equipment groups. The target ground station equipment combination refers to the equipment combination performing the user target ranging task. As can be seen, this invention first completes the zero-value measurement of a portion of the equipment combinations, and then performs zero-value conversion for the remaining combinations, achieving zero-value traversal of ground station equipment combinations while maintaining short time commitment and meeting the required measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of relay satellite systems, and in particular to a method, apparatus, electronic device, and computer-readable storage medium for zero-value ergodic measurement of satellite ground station equipment combinations. Background Technology

[0002] While providing data relay services to user spacecraft, relay satellite systems also need to perform ranging tasks. When performing ranging tasks, the directly measured target distance value includes the zero-distance value of the relay satellite transponder and the zero-distance value of the ground station equipment. When calculating the actual target distance value, these equipment zero-distance values ​​need to be subtracted. The measurement accuracy of the ground station equipment zero-distance value directly affects the ranging accuracy of the relay satellite system for user targets.

[0003] Before performing user target ranging tasks, traditional relay ground stations need to specify the data transmission equipment to be used and perform zero-value calibration in advance. During the ranging task, the primary terminal and link equipment remain fixed, and with necessary equipment switching, the number of equipment combinations is also limited. In this mode, zero-value distance measurements can be performed on each of the possible equipment combinations one by one. Zero-value distance measurement of fixed equipment combinations is one of the necessary pre-task tasks, generally performed under the control of the system monitoring console. When performing zero-value measurements on fixed equipment combinations, traditional relay satellite ground station systems calibrate the zero values ​​of the designated equipment combinations for ranging tasks in a sequential, iterative manner. Typically, completing the zero-value measurement and calibration of all available equipment combinations for a single task requires approximately one day of window time.

[0004] With the continuous optimization and upgrading of relay ground station systems, data relay and ranging tasks can now be performed using a dynamic and automatic allocation of equipment resources, eliminating the need for pre-specified data transmission equipment. In this scenario, the number of data transmission equipment combinations that may be used in a single mission increases significantly. To ensure reliable ranging accuracy, the zero values ​​of all possible equipment combinations need to be pre-calibrated and subtracted during user ranging. Therefore, a comprehensive measurement of the zero values ​​of all ground station equipment combinations is required before the mission. If the traditional method of calibrating the zero values ​​of each equipment combination is still used, it will consume a significant amount of system window time, making it undesirable in terms of resource utilization. Therefore, it is necessary to optimize the equipment combination zero value calibration method to achieve efficient and high-precision comprehensive measurement of equipment combination zero values, further improving the relay satellite system's ability to perform ranging tasks. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a method, apparatus, electronic device, and computer-readable storage medium for zero-value ergodic measurement of satellite ground station equipment combination that overcomes or at least partially solves the above problems.

[0006] One embodiment of the present invention provides a zero-value traversal measurement method for a combination of satellite ground station equipment. In a satellite ground station system, multiple ground station devices are included. Under a dynamic automatic allocation of equipment resources mode, the satellite ground station system has multiple sets of links, each set of links corresponding to a ground station equipment combination method. The method includes:

[0007] Select one set of links as the initial link, and determine the zero value of the ground station equipment combination corresponding to the initial link;

[0008] Based on the initial link, a partial zero-value combination traversal test is performed on the ground station equipment of the satellite ground station system;

[0009] The relative difference of zero values ​​of each input segment of adjacent ground station equipment groups in the satellite ground station system is obtained based on the zero value combination traversal test results.

[0010] The target ground station equipment combination zero value is calculated based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment combination. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task.

[0011] Optionally, selecting one set of links as the initial link and determining the zero value of the ground station equipment combination corresponding to the initial link includes:

[0012] The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

[0013] Optionally, the step of performing a partial zero-value combination traversal test on the ground station equipment of the satellite ground station system based on the initial link includes:

[0014] Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested.

[0015] Optionally, calculating the target ground station equipment combination zero value based on the combined zero value of the ground station equipment corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment group includes:

[0016] If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal.

[0017] If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

[0018] Another embodiment of the present invention provides a zero-value traversal measurement device for a combination of satellite ground station equipment. In a satellite ground station system, multiple ground station devices are included. Under a dynamic automatic allocation of equipment resources mode, the satellite ground station system has multiple sets of links, each set of links corresponding to a ground station equipment combination method. The device includes:

[0019] The initial link determination unit is used to select one set of links as the initial link and determine the zero value of the ground station equipment combination corresponding to the initial link.

[0020] The traversal test unit is used to perform partial zero-value combination traversal tests on the ground station equipment of the satellite ground station system based on the initial link.

[0021] The zero-value relative difference acquisition unit is used to obtain the zero-value relative difference of each input segment of the adjacent ground station equipment group of the satellite ground station system based on the zero-value combination traversal test results;

[0022] The target equipment combination zero value acquisition unit is used to calculate the target ground station equipment combination zero value based on the ground station equipment combination zero value corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task.

[0023] Optionally, the initial link determination unit is further configured to:

[0024] The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

[0025] Optionally, the traversal test unit is further configured to:

[0026] Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested.

[0027] Optionally, the target device combination zero value acquisition unit is further configured to:

[0028] If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal.

[0029] If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

[0030] Another embodiment of the present invention provides an electronic device, wherein the electronic device includes:

[0031] Processor; and,

[0032] A memory is configured to store computer-executable instructions, which, when executed, cause the processor to perform the aforementioned satellite ground station equipment combined zero-value traversal measurement method.

[0033] Another embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, which, when executed by a processor, implement the above-described satellite ground station equipment combination zero-value traversal measurement method.

[0034] The beneficial effect of this invention is that it first completes the zero-value measurement of some equipment combinations, and then completes the zero-value conversion of the remaining equipment combinations on this basis, so as to complete the zero-value traversal of ground station equipment combinations under the premise of short time occupation and still meeting the index requirements of measurement accuracy. Attached Figure Description

[0035] Figure 1 This is a flowchart illustrating a zero-value traversal measurement method for a satellite ground station equipment combination according to an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram of a wireless calibration method according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of a towerless offset feeding method according to an embodiment of the present invention;

[0038] Figure 4 This is a topology diagram of the data transmission equipment of a ground station system according to an embodiment of the present invention;

[0039] Figure 5 This is a topology diagram of the data transmission equipment nodes in a ground station system according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of a satellite ground station equipment combination zero-value traversal measurement device according to an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of the structure of an electronic device according to an embodiment of the present invention is shown;

[0042] Figure 8 A schematic diagram of the structure of a computer-readable storage medium according to an embodiment of the present invention is shown. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0044] Figure 1 This is a flowchart illustrating a zero-value traversal measurement method for satellite ground station equipment combinations according to an embodiment of the present invention. The satellite ground station system includes various ground station devices. In a dynamic automatic allocation mode for equipment resources, the satellite ground station system has multiple sets of links, each set of links corresponding to a ground station equipment combination method.

[0045] The relay ground station system employs a dynamic, automatic allocation of equipment resources to perform data relay and ranging tasks. During equipment allocation, the monitoring software first checks equipment availability, then assigns primary and backup terminals and link devices from among the available devices to complete the task for that loop, and sends parameters accordingly. The assigned devices then perform the data relay and ranging tasks for that loop. In the next loop's data relay task, devices are reselected and their status configured according to the allocation rules. If the equipment used in the previous loop fails or is occupied by other parallel tasks, it will not be reassigned. During the execution of data relay and ranging tasks, if the already assigned primary terminal and link device triggers a fault alarm, the monitoring software will assess the situation and automatically perform an emergency switchover between primary and backup devices to ensure the task continues to execute normally.

[0046] In this dynamic allocation of equipment resources and automatic emergency response mode, when one or more devices fail, the ground station system's ability to perform data relay tasks remains almost unaffected, significantly improving the availability of ground station equipment and system reliability. However, in this scenario, when the ground station repeatedly performs data relay and ranging tasks for a fixed user target, the equipment combinations for different mission cycles will not be exactly the same. Theoretically, all available devices could potentially be assigned to perform tasks by the monitoring software.

[0047] In data relay and ranging tasks that need to be executed repeatedly, according to the dynamic automatic equipment allocation rules, and considering the emergency switching that may occur due to equipment failure during the task, theoretically any equipment combination that can support the user target in completing the data relay task can be allocated and used. To ensure that the user target ranging task can be completed normally under all equipment combinations, the zero value of the ranging under all equipment combinations must be calibrated during the task preparation phase. This ensures that the zero value of the ground station equipment can be accurately deducted in real time during the execution of the ranging task, resulting in the correct user target distance value.

[0048] like Figure 1 As shown, the method includes:

[0049] S11: Select one set of links as the initial link, and determine the zero value of the ground station equipment combination corresponding to the initial link;

[0050] S12: Based on the initial link, perform partial zero-value combination traversal test on the ground station equipment of the satellite ground station system;

[0051] S13: Obtain the relative difference of zero values ​​of each input segment of adjacent ground station equipment groups of the satellite ground station system based on the zero value combination traversal test results;

[0052] S14: Calculate the target ground station equipment combination zero value based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment group. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task.

[0053] When dynamically allocating equipment resources, the number of zero values ​​for the equipment combinations that need to be measured increases dramatically. Considering the time occupied by the satellite window, it is not feasible to complete the zero value traversal of the equipment combinations by measuring them one by one. In this embodiment of the invention, the zero value measurement of a portion of the equipment combinations is completed first, and then the zero value conversion is performed on the remaining equipment combinations based on this. This achieves the completion of the zero value traversal of the ground station equipment combinations under the premise of short occupation time and still meeting the indicator requirements for measurement accuracy.

[0054] In an optional embodiment of the present invention, selecting one set of links as the initial link and determining the zero value of the ground station equipment combination corresponding to the initial link includes:

[0055] The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

[0056] Figure 2 This is a schematic diagram illustrating the principle of a wireless calibration method according to an embodiment of the present invention. In the wireless calibration method,

[0057] ∑R=Rg+RT+RB+RL

[0058] Wherein, ∑R is the total distance value measured by the system; Rg is the zero distance value of the equipment generated by the ground station transmitting "1" to receiving "1"; RT is the zero distance value accurately measured by the transponder (frequency converter or transponder); RB is the distance value between the ground station antenna tower and the calibration tower; RL is the zero distance value introduced by the feeder connecting the transponder to the calibration antenna.

[0059] Once ∑R is measured, since RT, RL, and RB are known and precise measured values, the zero distance value Rg of the ground station equipment can be calculated.

[0060] Rg=∑R-(RT+RB+RL)

[0061] Since the distance zero value Rs of the transponder has been accurately measured, the total zero value of the system can be obtained as R0 = (Rg + Rs).

[0062] During task execution, the system measures ∑R 任务 The distance to the user target can be calculated by summing the distance R between the ground station and the aircraft and the zero distance R0 of the system.

[0063] R = ∑R 任务 -R0

[0064] Understandably, when the zero-distance value (RT) of the transponder (inverter or transponder) itself cannot be accurately measured, and the zero-distance value (Rs) of the loaded transponder cannot be accurately measured, the substitution comparison method can be used to measure the total zero-distance value of the system. The substitution comparison method involves determining the difference in zero-distance value ΔR (transferred value) between the loaded transponder and the ground station transponder (inverter or transponder) before the mission. Thus, when the ground station performs zero-distance value measurement before the mission, the measured ∑R... 任务 In this process, the zero distance value Rg of the ground equipment and the zero distance value RT of the transponder cannot be separated, but their sum RgT (RgT=Rg+RT) can be calculated. At this time, the total zero value of the system during the execution of the mission is RgT+ΔR.

[0065] Thus, the distance value to the user's target is: R = ∑R 任务 -(RgT+ΔR)

[0066] Figure 3 This is a schematic diagram of a towerless offset feeding method according to an embodiment of the present invention. Figure 3 As shown, the towerless offset-fed zero-range measurement involves installing a small offset antenna (vibrator) near the main reflector of the main antenna, and then connecting it to a transponder (frequency converter or transponder) via a cable and a duplexer. The transponder is typically installed in the center or within the elevation housing. The installation location must meet near-field radiation characteristics while minimizing the impact of multipath effects on the zero-range value, ensuring the stability of the zero-range test level and data. A connection diagram is shown below.

[0067] The equipment error and drift error in the zero-point measurement residual of the towerless offset-feed method are the same as those of the wireless calibration method. The difference is that the influence of aperture field (near field) diffraction on the spatial distance needs to be determined by multiple experiments. However, as long as the design and installation are proper, this influence can be reduced to a very small extent and will not affect the validity and accuracy of the zero-point distance measurement.

[0068] After the system is connected, the total system distance value ∑R is measured. After deducting the feeder zero value RL and the spatial distance RB, the sum of the ground equipment distance zero value Rg and the transponder distance zero value RT, RgT, is calculated. The zero value can be transferred using the substitution comparison method.

[0069] The total zero value of the system during task execution is: R0 = RgT + ΔR

[0070] The distance to the user's target is: R = ΣR 任务 -R0

[0071] In practical applications, a method that primarily uses wireless tower calibration, supplemented by offset feed and wired methods, can be adopted to perform zero-value calibration on a specified combination of devices in a sequential traversal manner.

[0072] To increase the availability of ground station systems, redundant equipment is typically added at each level of equipment node, taking into account the minimum system capacity. Figure 4 This is a topology diagram of the data transmission equipment in a ground station system according to an embodiment of the present invention. Figure 4 As shown, the ground station system includes 2 field amplifiers, 8 Ka down-converters (KaDC), 8 L down-converters (LDC), 8 low-to-medium speed terminals (BBE), 8 L up-converters (LUC), and 4 sets of Ka up-converters (KaUC) and power amplifiers (HPA). The KaUCs and HPAs are directly connected and cannot be used interchangeably. All link devices and low-to-medium speed terminals can be assigned to perform user spacecraft ranging tasks.

[0073] In this scenario, if ranging is to be performed on a user target, the possible combinations of terminals and link devices that could be assigned to perform the user target ranging task are calculated, as follows:

[0074] ∑ E =∑ LNA ×∑ KaDC ×∑ LDC ×∑ BBE ×∑ LUC ×∑ HPA

[0075] = 2×8×8×8×8×4

[0076] =32768

[0077] If the calibration is performed using the traditional method with the above number of equipment combinations, even assuming all calibration equipment is ready, and the monitoring station calculates the zero value of each equipment combination one by one, with an estimated zeroing time of 5 minutes per combination, then the total time required to complete the zeroing calibration of all equipment combinations is:

[0078] T = 32768 × 5 min = 163840 min = 113 days

[0079] In reality, satellite ground stations may use different frequency bands for ranging, and the number of devices at a real ground station is also greater than that in the simplified model above. Using a monitoring station for zero-value calibration requires the use of relay satellite system resources, and data relay services to user targets cannot be provided during the zero-value calibration period. Therefore, occupying at least 113 days of system resources for ground station zero-value calibration is clearly not feasible.

[0080] This invention employs a method of directly measuring the zero values ​​of some devices and then calculating the zero values ​​of others to complete the zero-value traversal measurement of the ground station equipment combination. This solves the problem of excessive satellite window time occupied by traditional zero-value measurement methods, while ensuring that the calculated zero values ​​meet accuracy requirements. To achieve ranging zero-value calibration for all equipment combinations under a dynamically and automatically allocated equipment resource mode, an optimized calibration method must be designed. Here, a model is established using some equipment nodes from KaDC and LDC to optimize the zero-value calibration method. Three KaDCs, three LDCs, and an L-band return switch matrix are selected respectively, as follows: Figure 5 As shown.

[0081] Before performing the user target ranging task, the total number of device combinations that need to be calibrated at this device node is: ∑ KaDC ×∑ LDC =3×3=9. Specific combinations are shown in Table 1 below:

[0082] Table 1 Equipment Combination List

[0083] Serial Number KaDC LDC zero value 1 KaDC1 LDC1 Rg1 2 KaDC1 LDC2 Rg2 3 KaDC1 LDC3 Rg3 4 KaDC2 LDC1 Rg4 5 KaDC2 LDC2 Rg5 6 KaDC2 LDC3 Rg6 7 KaDC3 LDC1 Rg7 8 KaDC3 LDC2 Rg8 9 KaDC3 LDC3 Rg9

[0084] The method involves fixing one device and iterating through the others. First, KaDC1 is kept constant, and LDC is iterated, requiring the calibration of the zero value Rg1 for device combination 1 (KaDC1+LDC1), the zero value Rg2 for combination 2 (KaDC1+LDC2), and the zero value Rg3 for combination 3 (KaDC1+LDC3). Then, LDC1 is fixed, and KaDC is iterated, requiring the calibration of the zero value Rg4 for combination 4 (KaDC2+LDC1) and the zero value Rg7 for combination 7 (KaDC3+LDC1) (where KaDC1+LDC1 has already been pre-calibrated and will not be recalibrated). At this point, the results for zero values ​​Rg5, Rg6, Rg8, and Rg9 are unknown.

[0085] Based on the already calibrated zero values ​​of the equipment combinations, the difference Rg between the zero values ​​of equipment combination 2 and equipment combination 1 can be found. (2-1) =Rg2-Rg1 is the zero-value difference between LDC2 and LDC1 (including the corresponding cables, the same below), and the zero-value difference Rg between equipment combination 4 and equipment combination 1. (4-1)=Rg4-Rg1 represents the equipment zero-value difference between KaDC2 and KaDC1. Comparing Rg5 and Rg1, the main differences include: the equipment zero-value difference between KaDC2 and KaDC1, the equipment zero-value difference between LDC2 and LDC1, and the distance difference when the L-switch matrix is ​​set to 1 input / 1 output and 2 input / 2 output. Although the internal connections between different input / output ports of the matrix are different, theoretically, the zero-value differences are very small due to the almost identical number of cables, splitters, and amplifiers. Based on the group delay index of a single matrix input / output port, its ranging error relative to the relay satellite system can be ignored. Therefore, it can be estimated that:

[0086] Rg5'=Rg1+Rg (2-1) +Rg (4-1) =Rg1+Rg2-Rg1+Rg4-Rg1=Rg2+Rg4-Rg1

[0087] Similarly, we can estimate:

[0088] Rg6'=Rg3+Rg4-Rg1

[0089] Rg8'=Rg2+Rg7-Rg1

[0090] Rg9'=Rg3+Rg7-Rg1

[0091] Among them, the errors between the values ​​of Rg6', Rg8' and Rg9' and the actual calibration values ​​of Rg6, Rg8 and Rg9 are only the errors when the input and output ports of the L switch matrix are set differently.

[0092] Based on this method of calculating zero values ​​using partial combination calibration and partial combination conversion, it can be seen that the actual number of equipment combination calibrations required at this node becomes:

[0093] ∑ KaDC +∑ LDC -1 = 3 + 3 - 1 = 5

[0094] As can be seen, the number of equipment combinations that need to be directly calibrated has changed from a product of the number of equipment nodes to an additive relationship of the number of equipment nodes. The zero values ​​of other equipment combinations can be converted based on the directly calibrated distance values, which greatly reduces the order of magnitude of the calibration combinations.

[0095] Furthermore, based on the initial link, the step of performing a partial zero-value combination traversal test on the ground station equipment of the satellite ground station system includes:

[0096] Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested.

[0097] by Figure 4 Taking the ground station system as an example, the ranging task is performed in a fixed frequency band using the dynamic allocation mode of equipment resources. According to the requirements, the zero-value traversal measurement of the equipment combination needs to be completed before the task. The equipment combination that needs to be directly measured is detailed as follows.

[0098] The zero value of the first group of links was directly measured using the following equipment combination, as shown in Table 2, and the result is denoted as Rg1.

[0099] Table 2 Reference Equipment Combinations

[0100]

[0101] Based on the first set of links, a comprehensive test was conducted on the low- and medium-speed terminals, with a total of 7 tests, yielding 7 sets of zero values. Through zero value calculation, the relative difference between the data transmission return 140M matrix output, the low- and medium-speed terminal, and the data transmission forward 140M matrix input segment was obtained, as shown in Table 3, denoted as ΔRg. BBE n-1 .

[0102] Table 3. Traversal Table for Medium and Low Speed ​​Terminals

[0103]

[0104] Based on the first set of links, the LDC was subjected to traversal testing, a total of 7 tests, yielding 7 sets of zero values. The relative difference between the L-band return switch matrix output, the LDC, and the 140M data transmission matrix input segment was calculated, as shown in Table 4, denoted as ΔRg. LDC n-1 .

[0105] Table 4 LDC Traversal Table

[0106]

[0107] Based on the first set of links, the KaDC was subjected to traversal testing, a total of 7 tests, yielding 7 sets of zero values. The relative difference between the antenna-field amplifier KaDC-L band return switch matrix input segment was calculated, as shown in Table 5, denoted as ΔRg. KaDC n-1 .

[0108] Table 5 KaDC Traversal Table

[0109]

[0110] Based on the first set of links, the LNA was traversed and tested once, yielding one set of zero values. The relative difference between the LNA and KaDC segments was calculated, as shown in Table 6, and denoted as ΔRg. LNA n-1 .

[0111] Table 6 LNA Traversal Table

[0112]

[0113] Based on the first set of links, the LUC was subjected to traversal testing, a total of 7 tests, yielding 7 sets of zero values. The relative difference between the data transmission forward 140 switch matrix output and the LUC-L band forward switch matrix input segment was calculated, as shown in Table 7, denoted as ΔRg. LUC n-1 .

[0114] Table 7 LUC Traversal Table

[0115]

[0116] Based on the first set of links, a total of 3 tests were performed on KaUC+KaHPA, yielding 3 sets of zero values. The relative difference between the L-band forward switching matrix, KaUC+KaHPA, and the antenna input segment was calculated, as shown in Table 8, denoted as ΔRg. HPA n-1 .

[0117] Table 8 KaUC+KaHPA Traversal Table

[0118]

[0119] A total of 33 equipment combinations needed to have their distance zero values ​​directly measured. The method primarily used was wireless tower measurement, supplemented by offset feed and wired connections, and the measurements were completed sequentially from the monitoring station. All zero-value measurement results were stored on-site.

[0120] According to the principle of dynamic automatic allocation of equipment resources, when any combination of equipment is used to perform a user target ranging task, its zero distance value can be directly or indirectly derived from the previously measured results. If the equipment combination belongs to the previously measured equipment combination, the stored zero value information is directly read from the station monitoring and sent to the terminal. If the equipment combination does not belong to the previously measured equipment combination, a conversion is required. The zero value Rg1 of the first group of directly measured equipment is added to the zero value difference of each segment of the medium-low speed terminal, LDC, KaDC, LNA, LUC, and KaUC+HPA, respectively. That is, the zero distance value Rgx of any equipment combination is: Rgx = Rg1 + ΔRg BBE n1-1 +△Rg LDC n2-1 +△Rg KaDC n3-1 +△Rg LNA n6-1 +△Rg LUC n4-1 +△Rg HPA n5-1 Where n1 to n6 are the device numbers used by the corresponding nodes.

[0121] For example, when a ground station uses the forward and backward SSA signal link to perform user target ranging tasks, and the allocated primary equipment resource combination is LNA1, KaDC3, LDC4, BBE6, LUC4, and KaUC3+KSAHPA20W2, then the zero value of the equipment combination that needs to be deducted is...

[0122] Rg0=Rg1+△Rg BBE n1-1 +△Rg LDC n2-1 +△Rg KaDC n3-1 +△Rg LNA n6-1 +△Rg LUC n4-1 +△Rg HPA n5-1

[0123] =Rg1+Rg BBE6 -Rg1+Rg LDC4 -Rg1+Rg KaDC3 -Rg1+0+Rg LUC4 -Rg1+Rg HPA3 -Rg1

[0124] =Rg BBE6 +Rg LDC4 +Rg KaDC3 +Rg LUC4 +Rg HPA3 -4Rg1

[0125] Further, the step of calculating the target ground station equipment combination zero value based on the combined zero value of the ground station equipment corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment group includes:

[0126] If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal.

[0127] If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

[0128] Understandably, after receiving data relay and ranging task commands, the ground station monitoring software initiates the task preparation process. During this process, the station monitor selects equipment autonomously or in advance, allocating equipment resources and controlling parameters. If the link is detected to be in ranging mode during task preparation, zero-value calibration calculation is required. The station monitoring software adds a zero-value calibration calculation method in the final step of the task preparation script. Specifically, the station monitor uses the already calibrated relative zero value to calculate the corresponding combined zero value based on the resource allocation results, and sends the system zero value and equipment combination number to the medium-low speed data transmission baseband. The medium-low speed data transmission baseband then uses the frequency point and equipment combination number to complete the zero-value retrieval and deduction.

[0129] If the equipment combination used is one that directly measures zero values, the measured and stored zero value results are directly sent to the medium-low speed data transmission baseband. If the equipment combination used is not one that directly measures zero values, the station monitoring software needs to first determine the equipment used in the equipment combination, and then convert the zero value results before sending them to the medium-low speed data transmission baseband.

[0130] The following section analyzes the calibration efficiency and calibration accuracy of embodiments of the present invention.

[0131] In this embodiment of the invention, the zero-value measurement method described above is used to... Figure 4 The ground station shown undergoes zero-value traversal calibration. First, the equipment nodes are divided into LNA nodes, KaDC nodes, LDC nodes, BBE nodes, LUC nodes, and KaUC+HPA nodes, with each node connected by a switch matrix or splitter. The number of equipment combinations requiring direct calibration is calculated.

[0132] ∑ E '=∑ LNA +∑ KADC +∑ LDC +∑ BBE +∑ LUC +∑ EHPA -5

[0133] =2+8+8+8+8+4-5

[0134] =33

[0135] After calibrating the zero-value distances of 33 equipment combinations using traditional zero-value measurement methods, the zero values ​​of all other dynamically allocated equipment combinations can be obtained through conversion. Since the relay satellite system window is only occupied during the actual zero-value calibration, and the conversion can be performed entirely in the background by the monitoring software without further occupying system resources, completing the zero-value calibration of 33 equipment combinations, including equipment preparation and calibration time, only takes 2-3 days. That is, using this embodiment of the invention to complete the zero-value traversal reduces the satellite window time from 113 days to no more than 3 days compared to direct measurement. For more complex ground station systems, the satellite window time saved by using this embodiment of the invention for equipment combination zero-value measurement will be even longer.

[0136] Regarding calibration efficiency, the direct calibration plus partial conversion method adopted in this embodiment of the invention can complete the ground station zero-value traversal measurement within a limited satellite window, meeting the distance zero-value calibration requirements under the dynamic automatic allocation mode of equipment resources.

[0137] In practical applications, when the switch matrix has different input / output ports, the number of amplifiers and splitters passing through it is the same, and the group delay index test results of the reference matrix show that the difference in absolute and relative delay introduced by the matrix is ​​very small. When calculating the zero value of the device combination distance using the conversion method, since there are 6 device nodes, including 5 switch matrices, the maximum possible new system error is the error caused by the different input / output ports of the 5 matrices. Multiple possible device combinations were randomly designed, and the zero value distance was calibrated using both conversion and direct calibration methods. Comparing the two calibration results, the experiment showed that the maximum actual error introduced by using the conversion method is 0.3m. The actual error of the relay satellite system performing user target ranging is over 3m; 0.3m is not significant in terms of error magnitude and does not affect the user target orbit determination application.

[0138] Regarding calibration accuracy, considering the advantages of dynamic allocation of equipment resources in improving the reliability of the ground station system, as well as the zero-value calibration requirements when performing user target ranging, the error introduced by the embodiments of the present invention is acceptable.

[0139] Furthermore, during dynamic resource allocation, although all devices have the potential to be assigned tasks, considering the order of devices at each node, the device resource allocation rules, and the possibility of emergency switching in the absence of device failures, the combination of devices ranked higher has a greater probability of being assigned. Therefore, for device combinations with a higher probability of use, direct calibration is still used to complete zero-value measurements. For device combinations with extremely low allocation probabilities, zero-value calculation is performed to further reduce the error introduced during zero-value calculation.

[0140] It is understood that the embodiments of the present invention can be applied in relay satellite ground stations, and can also be adopted in other satellite ground stations.

[0141] Figure 6 This is a schematic diagram of the structure of a satellite ground station equipment combination zero-value traversal measurement device according to an embodiment of the present invention. Figure 6 As shown, the device includes:

[0142] The initial link determination unit 61 is used to select one set of links as the initial link and determine the zero value of the ground station equipment combination corresponding to the initial link.

[0143] The traversal test unit 62 is used to perform partial zero-value combination traversal tests on the ground station equipment of the satellite ground station system based on the initial link.

[0144] The zero-value relative difference acquisition unit 63 is used to obtain the zero-value relative difference of each input segment of the adjacent ground station equipment group of the satellite ground station system based on the zero-value combination traversal test results;

[0145] The target equipment combination zero value acquisition unit 64 is used to calculate the target ground station equipment combination zero value based on the ground station equipment combination zero value corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task.

[0146] In this embodiment of the invention, zero-value measurement is first completed for some equipment combinations, and then zero-value conversion is completed for the remaining equipment combinations based on this. This achieves zero-value traversal of ground station equipment combinations while maintaining short time commitment and meeting the required measurement accuracy.

[0147] In an optional embodiment of the present invention, the initial link determination unit 61 is further configured to:

[0148] The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

[0149] Traversing test unit 62 is further used for:

[0150] Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested.

[0151] The target device combination zero value acquisition unit 64 is further used for:

[0152] If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal.

[0153] If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

[0154] It should be noted that the satellite ground station equipment combination zero-value traversal measurement device in the above embodiments can be used to execute the methods in the aforementioned embodiments, so they will not be described in detail one by one.

[0155] In summary, this invention first completes the zero-value measurement of some equipment combinations, and then performs zero-value conversion for the remaining equipment combinations based on this, thereby achieving zero-value traversal of ground station equipment combinations while maintaining short time commitment and meeting the required measurement accuracy.

[0156] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0157] It should be noted that:

[0158] The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. Various general-purpose devices can also be used in conjunction with the teachings herein. The required structure for constructing such devices is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0159] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0160] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0161] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0162] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0163] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the device for detecting the wearing status of an electronic device according to embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium or can take the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0164] For example, Figure 7 A schematic diagram of an electronic device according to an embodiment of the present invention is shown. The electronic device conventionally includes a processor 71 and a memory 72 arranged to store computer-executable instructions (program code). The memory 72 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Figure 1Storage space 73 for program code 54 of any method steps shown and in any of the embodiments. For example, storage space 73 for storing program code may include various program codes 74 for implementing the various steps in the methods above. This program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, CDs, memory cards, or floppy disks. Such computer program products are typically, for example, Figure 8 The aforementioned computer-readable storage medium. This computer-readable storage medium may have the same characteristics as... Figure 7 The memory 72 in the electronic device is similarly arranged as a storage segment, storage space, etc. The program code can be compressed, for example, in a suitable form. Typically, the storage space stores program code 81 for performing the steps of the method according to the invention; that is, it can contain program code, such as that read by a processor 71, which, when run by the electronic device, causes the electronic device to perform the various steps of the method described above.

[0165] The above description is merely a specific embodiment of the present invention. Under the teachings of the present invention, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for zero-value traversal measurement of satellite ground station equipment combination, characterized in that, In a satellite ground station system, which includes various ground station devices, under a dynamic automatic allocation of device resources, the satellite ground station system has multiple sets of links, each set of links corresponding to a combination of ground station devices. The method includes: Select one set of links as the initial link, and determine the zero value of the ground station equipment combination corresponding to the initial link; Based on the initial link, a partial zero-value combination traversal test is performed on the ground station equipment of the satellite ground station system; The relative difference of zero values ​​of each input segment of adjacent ground station equipment groups in the satellite ground station system is obtained based on the zero value combination traversal test results. The target ground station equipment combination zero value is calculated based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment group. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task. Based on the initial link, the step involves performing a partial zero-value combination traversal test on the ground station equipment of the satellite ground station system, including: Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested; The step of calculating the target ground station equipment combination zero value based on the combined zero value of the ground station equipment corresponding to the initial link and the relative difference between the zero values ​​of each input segment of the adjacent ground station equipment group includes: If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal. If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

2. The method according to claim 1, characterized in that, Selecting one set of links as the initial link and determining the zero value of the ground station equipment combination corresponding to the initial link includes: The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

3. A satellite ground station equipment combination zero-value traversal measurement device, characterized in that, The satellite ground station system includes various ground station devices. In a dynamic automatic allocation mode for equipment resources, the satellite ground station system has multiple sets of links, each set of links corresponding to a combination of ground station devices. The device includes: The initial link determination unit is used to select one set of links as the initial link and determine the zero value of the ground station equipment combination corresponding to the initial link. The traversal test unit is used to perform partial zero-value combination traversal tests on the ground station equipment of the satellite ground station system based on the initial link. The zero-value relative difference acquisition unit is used to obtain the zero-value relative difference of each input segment of the adjacent ground station equipment group of the satellite ground station system based on the zero-value combination traversal test results; The target equipment combination zero value acquisition unit is used to calculate the target ground station equipment combination zero value based on the ground station equipment combination zero value corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group. The target ground station equipment combination refers to the equipment combination that performs the user target ranging task. The traversal test unit is further used for: Based on the initial link, a certain type of ground station equipment in the initial link is deleted, and other equipment of that type of ground station equipment in the satellite ground station system is connected to the link in sequence, and the zero value of each equipment combination is tested; The target device combination zero value acquisition unit is further used for: If the zero value of the target ground station equipment combination has been measured, the measured zero value of the target ground station equipment combination is sent to the terminal. If the target ground station equipment combination is not measured, the calculation is performed based on the zero value of the ground station equipment combination corresponding to the initial link and the relative difference of the zero values ​​of each input segment of the adjacent ground station equipment group, and the calculation result is sent to the terminal.

4. The apparatus according to claim 3, characterized in that, The initial link determination unit is further used for: The zero value of the ground station equipment combination corresponding to the initial link is determined by the wireless calibration method, the substitution comparison method, or the towerless offset feeding method.

5. An electronic device, characterized in that, The electronic device includes: Processor; and, A memory configured to store computer-executable instructions, which, when executed, cause the processor to perform the satellite ground station equipment combination zero-value traversal measurement method according to any one of claims 1-2.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores one or more programs, which, when executed by a processor, implement the satellite ground station equipment combination zero-value traversal measurement method according to any one of claims 1-2.

Images