An automatic interpretation method of telemetry slowly changing parameters based on statistical characteristics of historical data

Abstract

The invention discloses a method for automatically interpreting slowly changing parameters of telemetry based on statistical characteristics of historical data, comprising: 1 constructing a database of historical models; 2 interpreting parameters according to; 3 unifying sampling points of valid data segments of parameter historical data to valid data of target data 4. Estimate the target data of the parameter; 5. Estimate the standard deviation of the parameter; 6. Divide the distribution of the target data into four intervals according to the estimation and standard deviation of the parameter target data: 0~1σ, 1σ~2σ, 2σ~3σ, 3σ~∞; 7 Statistical parameter target data probability distribution in each interval; 8 Potential abnormal parameter table obtained; 9 Potential abnormal parameter table obtained by artificial experts based on the above steps and obtained by analysis The auxiliary decision diagram checks the potential abnormal parameters one by one, and finally determines the abnormal parameters of telemetry during the flight. The invention overcomes the disadvantages of low manual interpretation efficiency and low data utilization rate, and saves a lot of manpower for the test process of the launch vehicle and the aircraft.

Description

technical field [0001] The invention relates to the field of telemetry parameter interpretation, in particular to an automatic interpretation method of telemetry slowly varying parameters based on statistical characteristics of historical data. Background technique [0002] The interpretation of telemetry parameters is a very important link in the flight process of launch vehicles and aircraft, and the interpretation results are an important basis for judging whether the single equipment or sub-systems work normally during the flight of rockets and aircraft. Usually, the telemetry parameters during a flight range from hundreds to thousands, with different shapes and noise and interference. Therefore, it is difficult to realize automatic interpretation. The manual interpretation mode mainly based on experts is still the interpretation of telemetry parameters. main mode. Obviously, the manual interpretation mode will consume a lot of human resources, not only the interpretati...

AI Technical Summary

Problems solved by technology

Usually, the telemetry parameters during a flight range from hundreds to thousands, and the shapes are different, and there are noises and interferences. Therefore, it is difficult to realize automatic interpretation. main mode

Obviously, the manual interpretation mode will consume a lot of human resources, not only the interpretation efficiency and data utilization rate are low, but also there are problems such as misjudgment and missed judgment.

[0003] At present, many scholars have done in-depth research on the automatic interpretation method of telemetry parameters and achieved certain results, but they lack the utilization and mining of historical data of telemetry parameters.

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