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This study investigates data mining techniques useful for the health monitoring of spacecraft, focusing on (1) features derived from telemetry parameter time series; (2) derived parameters from auxiliary data sources; (3) Kernel-‐density estimate (KDE) based data density change detection; (5) Poincaré plot analysis; (6) command effect analysis
KU Leuven
The initial step of the analysis is represented by the definition of the GNSS capabilities and receiver requirements in the environment of interest. The service volume concept has been introduced to this aim, and recent studies pointed out the interest to define and include GNSS performance above the altitude of the constellation itself [1], [2]. It is well known that signals, even if primarily broadcast from GNSS sources in order to serve Earth surface and proximity (i.e. with a beam directed nadir), are available at a limited extent also above the constellation.
Joanneum Research
The main purpose of this project, as mentioned in the SoW, was to analyse historical mission data and search for new features which would be useful in the telemetry checking, command verification and procedure writing process in the future.
Features of a signal (or parameter in this context) are defined as characteristics that can be measured or calculated over a given time window (such as mean, standard deviation or minimum of a signal).
SATE - Systems and...
There is a need to achieve optimal cost effectiveness from remote sensing missions. Concurrently, a key scientific need in remote sensing is to address the spatial and temporal resolution of atmospheric measurements. Improved temporal resolution observations of the atmosphere – and importantly a reduced latency between observation and delivery to the user – can directly improve weather forecasting services.
Surrey Satellite...
The purpose of this GSP activity was to assess the capabilities of non-intrusive diagnostic techniques for internal measurements in ablative materials during PWT tests. This initial steps were to identify the measurements to be performed in relation with high-speed Earth re-entry, and to identify the accessible parameters as well as related diagnostics techniques. For this objective an extensive review of the possible measurement methods, with a focus on non-intrusive diagnostics, has been undertaken.
Ingénierie et Systèmes...
The Optel-μ Implementation Study on ISS has been set up to assess the feasibility of an IOD (In Orbit Demonstration) of the Optel-μ Space Terminal on the ISS (International Space Station).
The Optel-μ system provides an optical data downlink from a LEO (Low Earth Orbit) S/C to an Optical Ground Station with a data rate up to 2Gbit/s. It is being developed by RUAG Space in the frame of the ARTES program
RUAG SCHWEIZ AG
RAMS and risk assessments performed in the course of the system design, verification and operation of space systems rely on the availability of realistic input data. This input data is coming mainly from three different sources:
- MIL-HDBK-217F, Notice 2 for EEE components
- manufacturer supplied information (e.g. pyrovalves, reaction wheels)
- expert judgement based on experience and on the adaptation of data from space and non-space applications.
VEGA Space Systems
In the context of satellite remote sensing, “hyper-spectral” is a generic term that means that “many channels” are observed. For InfraRed (IR) instruments, this term is associated with thousands channels, but for the MicroWave (MW) domain, an instrument with hundred of channels is already considered to be hyper-spectral. There are two main alternative concepts in using hyper-spectral information in MW:
ESTELLUS SAS
The approach of the ‘Interplanetary Meteoroid Environment for eXploration’ (IMEX) project is to build a model of meteoroid streams throughout the inner solar system. Our motivation for this model is the impact hazard to spacecraft. An understanding of the interplanetary environment, including the dust environment, is crucial for the planning of spacecraft missions in the inner solar system. Particles striking a spacecraft with high velocities can cause damage leading to the impairment or even failure of the spacecraft or its subsystems.
UNIV STUTTGART
The simulations of the long term evolution of the space debris population, under realistic assumptions, show how the driving factor in the future environment will be mostly the breakup of large spacecraft and rocket bodies in LEO.
Istituto Fisica Aplicata...
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