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#aeolus

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Auf Distanz

Neue #Podcast-Episode: Auf Distanz 0111: DLR – Institut für Technische Physik

Dieses ist die zweite Episode aus der Episodenreihe zum Projekt #ION des Deutschen Zentrums für Luft- und Raumfahrt DLR (@DLR). Ich sprach mit Wolfgang Riede vom Institut für Technische Physik in Stuttgart über das Institut, über Projekte, die Ortung von Objekten im Erdorbit, Tests für das Instrument des Satelliten #Aeolus und vieles mehr.

aufdistanz.de/auf-distanz-0111

Auf Distanz - Podcast über Astronomie und RaumfahrtAuf Distanz 0111: DLR - Institut für Technische PhysikEin Besuch beim Institut für Technische Physik des Deutschen Zentrums für Luft- und Raumfahrt, aufgenommen am Johannes Kepler Observatorium in Empfingen Dieses ist die zweite Episode aus der Episodenreihe zum Projekt ION des Deutschen Zentrums für Luft- und Raumfahrt DLR. Ich sprach mit Wolfgang Riede vom Institut für Technische Physik in Stuttgart über das Institut, über Projekte, die Ortung von Objekten im Erdorbit, Tests für das Instrument des Satelliten Aeolus und vieles mehr.
Public
Daniel Fischer

Operational Angular Track Reconstruction in #SpaceSurveillance #Radars through an Adaptive Beamforming Approach: mdpi.com/2226-4310/11/6/451 -> Space object overpopulation is a growing concern, ground surveillance is needed for collision avoidance, fragmentation analysis, and reentry - here, #Aeolus' trailblazing reentry forms a case study: x.com/esa_aeolus/status/179899

MDPIOperational Angular Track Reconstruction in Space Surveillance Radars through an Adaptive Beamforming ApproachIn the last few years, many space surveillance initiatives have started to consider the problem represented by resident space object overpopulation. In particular, the European Space Surveillance and Tracking (EUSST) consortium is in charge of providing services like collision avoidance, fragmentation analysis, and re-entry, which rely on measurements obtained through ground-based sensors. BIRALES is an Italian survey radar belonging to the EUSST framework and is capable of providing measurements including Doppler shift, slant range, and angular profile. In recent years, the Music Approach for Track Estimate and Refinement (MATER) algorithm has been developed to retrieve angular tracks through an adaptive beamforming technique, guaranteeing the generation of more accurate and robust measurements with respect to the previous static beamforming approach. This work presents the design of a new data processing chain to be used by BIRALES to compute the angular track. The signal acquired by the BIRALES receiver array is down-converted and the receiver bandwidth is split into multiple channels, in order to maximize the signal-to-noise ratio of the measurements. Then, the signal passes through a detection block, where an isolation procedure creates, for each epoch, signal correlation matrices (CMs) related to the channels involved in the detection and then processes them to isolate the data stream related to a single detected source. Consequently, for each epoch and for each detected source, just the CM featuring the largest signal contribution is kept, allowing deriving the Doppler shift measurement from the channel illumination sequence. The MATER algorithm is applied to each CM stream, first estimating the signal directions of arrival, then grouping them in the observation time window, and eventually returning the target angular track. Ambiguous estimates may be present due to the configuration of the receiver array, which cause spatial aliasing phenomena. This problem can be addressed by either exploiting transit prediction (in the case of cataloged objects), or by applying tailored criteria (for uncatalogued objects). The performance of the new architecture was assessed in real operational scenarios, demonstrating the enhancement represented by the implementation of the channelization strategy, as well as the angular measurement accuracy returned by MATER, in both nominal and off-nominal scenarios.
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Shephallmassive

So a final goodbye to #Aeolus built in #Stevenage in collaboration with #Esa & European partners. Congratulation to all!! A trailblazer for monitoring wind speeds. Overcame so many challenges, amazing feat of engineering and best of all -working together!.. British satellite guided to assisted crash in Atlantic in world first | Satellites | The Guardian

theguardian.com/science/2023/j

The GuardianBritish satellite guided to assisted crash in Atlantic in world firstBy Nadeem Badshah
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Hippy Steve

"The satellite involved, #Aeolus was originally designed as a science and technology demonstration mission, but its global wind measurements proved so valuable that the data were incorporated into operational numerical weather forecast models, an eventuality not foreseen before the satellite's launch."

Public
Mark McCaughrean

A wizard prang 🧙‍♂️🛰️🇦🇶

ESA’s pioneering wind mission, #Aeolus, was guided to a re-entry over Antarctica last night, ensuring that any remaining hardware landed safely in the Atlantic 🌊🌍

This successfully demonstrated new techniques for #SpaceDebris mitigation – kudos to our colleagues at the European Space Operations Centre in Darmstadt 🖖🤘

#SpaceFlight #RocketScience #Astrodon

esa.int/Applications/Observing

www.esa.intAeolus: a historic end to a trailblazing missionSurpassing scientific expectations and exceeding its planned life in orbit, the Aeolus wind mission has been hailed as one of ESA’s most successful Earth observation missions. And now, its end will go down in history too, thanks to the ingenuity of the Agency’s mission control team who guided this remarkable satellite down to Earth’s atmosphere for a safe reentry.
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Daniel Fischer

The countdown is truly on now for #Aeolus as it begins its journey home: blogs.esa.int/rocketscience/20 -> This week marks a significant milestone in the reentry process. End-of-life tests have ended. Aeolus will now start to naturally descend as Earth’s atmosphere and gravity combine to drag the satellite down from an altitude of 320 km to 280 km.

blogs.esa.intAeolus begins its journey home – Rocket ScienceNews from the edge of gravity
Public
Daniel Fischer

Validation of the Aeolus L2B Rayleigh winds and ECMWF short-range forecasts in the upper troposphere and lower stratosphere using Loon super pressure balloon observations: rmets.onlinelibrary.wiley.com/ -> #Loon stratospheric balloons confirm #wind data from the #Aeolus satellite: tropos.de/en/current-issues/pr (BTW I first became aware of this research through a Mastodon posting ... so yeah, this 'platform' can indeed serve as a a science news aggregator! More like this, please.)

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