Identifying pulse noises in the service module of the ISS Russian segment

4A Lenin str., Korolev, Moscow region, 141070, Russian Federation, e-mail: post@rsce.ru The paper presents the results of processing the onboard pulsed noises recorded by the scientific equipment «Means of Real-time Determination of the Puncture-point Location» in the space experiment Proboi («Puncture») using small microphones installed inside the Service Module of the Russian Segment of the International Space Station (ISS RS) during the work of the crews of ISS-41/42, ISS-43/44 and ISS-45/46. Developed and implemented in the form of a software code was an algorithm for recognizing sources of pulsed acoustic noises acting onboard the Service Module of the ISS RS. Parametric studies were done on the resolution of coefficients of linear correlations for various spectral representations. An informed choice of parameters for spectral and correlation analyses was performed. A correlation matrix of 1/3-octave spectra was generated, which contains clearly defined groups of pulsed noises, including a group corresponding to signal spectra of the puncture simulator, which was placed at more than 100 points within the volume of the Service Module, including spaces behind the panels. There are plans to use the algorithm in updating the software for the scientific equipment for identifying in real-time pulsed signals of a puncture with transmission of telemetry data to Earth in Expedition ISS-53/54. The results of the studies demonstrate that in principle it is feasible to identify sources of pulsed noise onboard the ISS RS.