A Window-Based Interpretation Method of Satellite Aperiodic Telemetry Analog Quantities

A non-periodic, satellite telemetry technology, applied in the field of satellite testing, can solve problems such as equipment failure, identification of non-periodic analog quantities, and difficulties in software intelligent interpretation, and achieve the effects of avoiding missed judgments and facilitating reminders and alarms

Active Publication Date: 2018-12-21
AEROSPACE DONGFANGHONG SATELLITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For non-periodic analog quantities, due to the random characteristics of changes, it is difficult to realize intelligent interpretation by software
Taking the load current telemetry of the whole star as an example, as an important analog telemetry that characterizes the working state of the whole star, there are two reasons for its value change, one is external normal excitation, including control commands, environmental changes, etc., and the other is equipment failure. Since the occurrence of external excitation or equipment failure is random and irregular, there is currently no method for automatically identifying aperiodic analog quantities using software

Method used

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  • A Window-Based Interpretation Method of Satellite Aperiodic Telemetry Analog Quantities
  • A Window-Based Interpretation Method of Satellite Aperiodic Telemetry Analog Quantities
  • A Window-Based Interpretation Method of Satellite Aperiodic Telemetry Analog Quantities

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Experimental program
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Embodiment

[0052] figure 2 It is a change curve of the load current of a certain satellite, the sampling period is 1 second, and the data from 1 to 50 seconds are shown in Table 1, and the data unit is ampere (A). Starting from data 11, the adjacent window mean difference method is used for data interpretation. The window width is set to 5 sampling periods, and the threshold is an absolute value of 0.2. The results of window calculation are shown in Table 2.

[0053] Table 1 Sampling data of a certain satellite load current

[0054] 1～10s

1.6

1.7

1.75

1.6

1.7

1.75

1.6

1.7

1.75

1.6

11～20s

1.7

1.75

1.6

1.7

1.75

1.6

1.7

1.75

1.6

1.7

21～30s

1.75

2

2.1

2.2

3.5

3.6

3.8

3.7

3.8

3.85

31～40s

3.9

4.1

4.5

4.9

5.2

5.3

5.2

5.3

5.1

5.2

41～50s

5.3

5.1

5.2

5.3

5.1

5.2

5.3

5.1

5.2

5.3

[0055] The mean and mean differe...

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Abstract

Provided is a satellite non-periodic remote measurement analog quantity interpretation method based on windows, comprising: setting a window width; creating continuous windows, searching for a first stable state and calculating a mean value; detecting subsequent windows, and searching for a first change state window; continuing detecting subsequent windows, finding a second stable state and calculating a mean value; calculating the mean value between the first and second stable states to be used as the variation of analog quantity; retrieving external stimulation logs, determining whether external stimulation corresponding to the variation of analog quantity exists, and determining the variation of analog quantity to be anomalous change if external stimulation corresponding to the variation of analog quantity does not exist; and using the second stable state as a new stable state, and repeating the steps to realize automatic interpretation of satellite non-periodic remote measurement analog quantity. The satellite non-periodic remote measurement analog quantity interpretation method can automatically identify the change (increase or decrease) and variation of non-periodic remote measurement analog quantity through software, and discover abnormal change caused by equipment faults.

Description

technical field [0001] The invention relates to a window-based interpretation method for satellite aperiodic telemetry analog quantities, which is used for realizing intelligent interpretation of satellite telemetry analog quantities, and belongs to the field of satellite testing. Background technique [0002] During the comprehensive test of the electrical performance of the satellite, the telemetry data of the entire satellite is continuously transmitted underground through the measurement and control channel. The telemetry data of the satellite includes two kinds of digital quantities and analog quantities, and the analog quantities are divided into static analog quantities, periodic analog quantities and non-periodic analog quantities. Testers need to monitor and interpret these data in real time to determine whether the satellite is working properly. Digital telemetry represents the working status of the on-board equipment, the meaning is obvious and direct, and the va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 王崇羽刘锋韩冬苏振华
Owner AEROSPACE DONGFANGHONG SATELLITE
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