The European Surveillance and Tracking System - Services and Design Drivers

Krag, H.; Klinkrad, H.; Flohrer, Tim; Fletcher, Emmet; Castillo, Villafranca del

doi:10.2514/6.2010-1927

Cited by 13 publications

(4 citation statements)

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“…2 Regarding the discussion above, using the TLE data provided by the US-SSN catalogue results in a high uncertainty for conjunction predictions which complicates the analysis further. The initial covariance of the TLE data is estimated by comparing the TLE data with a numerically propagated orbit which is then fitted to the TLE data .…”

Section: B Collision Avoidance Operationsmentioning

confidence: 97%

“…On the other hand, French Air Force has a catalogue of space objects which is not public 13 . However, ESA has also initiated a Space Surveillance Tracking Segment within the Space Situational Awareness Program to provide conjunction analysis and collision avoidance services to spacecraft operators 2 The orbit estimation accuracy of the catalogue is also very important in terms of operations. The orbit prediction accuracy depends on the orbit type, the covariance (uncertainty) of the state vector determined at the initial epoch and time gap between this initial epoch and the epoch of the prediction (forecast span)…”

Section: B Collision Avoidance Operationsmentioning

confidence: 99%

“…Besides these organizations, European Space Agency (ESA) has initiated the Space Situational Awareness (SSA) program to support satellite operators with Space Weather (SWE) and Space Surveillance and Tracking (SST) segments 1 . While the SWE segment provides real-time information (nowcasts) and forecasts on environmental conditions 18 , the SST segment will provide a catalogue of objects and conjunction analysis services to support collision avoidance operations 2 The satellite (and debris) population is increasing with more countries launching satellites, many without mitigation measures such as propellant for de-orbiting or collision avoidance. Therefore the number of conjunctions is likely to grow in the future, with any collision in space (such as the Cosmos-Iridium incident) significantly increasing the debris population.…”

Section: Introductionmentioning

confidence: 99%

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Mission Operations to Improve Space Mission Protection

Yaglioglu¹

2012

SpaceOps 2012 Conference

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As the number of satellite launches increases, debris problem has become a significant issue. From universities and small companies to space agencies, operators have different strategies to deal with this problem as well as the space weather. This study reviews the current practice of satellite operators concerning security measures regarding space weather and space debris risks. The relevant background for conjunction analysis and collision avoidance is provided. Existing mission operations structures at various space agencies and operators around the world are investigated. Risks and vulnerabilities are summarized for orbits at different altitudes and improvements in operations are suggested for various scale operators.

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Section: B Collision Avoidance Operationsmentioning

confidence: 97%

Section: B Collision Avoidance Operationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mission Operations to Improve Space Mission Protection

Yaglioglu¹

2012

SpaceOps 2012 Conference

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“…The system was designed to track all LEO-resident objects (200-2000 km) within the tracking capabilities of the antenna and having sizes above the following perigee-altitude (h p )-dependent diameter envelope (d min ), with h ref = 1400 km and d ref = 10 cm [20]:…”

Section: Estimated Theoretical Performance Of the Considered Solutionmentioning

confidence: 99%

Development of the Romanian Radar Sensor for Space Surveillance and Tracking Activities

Ionescu

Rusu-Casandra

Bîră

et al. 2022

Sensors

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The constant increase in the number of space objects and debris orbiting the Earth poses risks to satellites and other spacecraft, both in orbit and during the launching process. Therefore, the monitoring of space hazards to assess risk and prevent collisions has become part of the European Space Policy and requires the establishment of a dedicated Framework for Space Surveillance and Tracking (EU SST) Support. This article presents the CHEIA SST Radar, a new space tracking radar sensor developed and installed in Romania with the purpose of being included in the EU SST sensor network and of contributing to the joint database of space objects orbiting the Earth. The paper describes the processes of design, simulation, and implementation of the hardware and software building blocks that make up the radar system. It emphasizes the particular case of using an already existing system of two large parabolic antennas requiring an innovative retrofitting design to include them as the basis for a new quasi-monostatic radar using LFMCW probing signals. The preliminary design was validated by extensive simulations, and the initial operational testing carried out in December 2021 demonstrated the good performance of the radar in the measuring range and radial speed of LEO space objects.

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