1.
Margineanu, Teodor; Enescu, Alexandra-Mihaela; Enescu, Horia-Razvan; Enachescu, Marius
NTP-Synchronized Time-Stamper for RADAR Signal Acquisition Proceedings Article
In: 2024 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), pp. 119-124, 2024, ISSN: 2687-9808.
Abstract | Links | BibTeX | Tags: Accuracy;Microcontrollers;Spaceborne radar;Surveillance;Operating systems;Sea measurements;Aerospace electronics;Embedded System;NTP;Time-stamper;RADAR
@inproceedings{10646303,
title = {NTP-Synchronized Time-Stamper for RADAR Signal Acquisition},
author = {Teodor Margineanu and Alexandra-Mihaela Enescu and Horia-Razvan Enescu and Marius Enachescu},
doi = {10.1109/BlackSeaCom61746.2024.10646303},
issn = {2687-9808},
year = {2024},
date = {2024-06-01},
booktitle = {2024 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)},
pages = {119-124},
abstract = {This work presents a hardware implementation of the NTP-synchronized time-stamper for RADAR signal acquisition which has significantly enhanced the precision and robustness of the Cheia ground-based FMCW space radar system. By utilizing a bare-metal STM32 microcontroller for on-demand synchronization and data management, the system now ensures accurate time alignment and seamless information transfer to the controlling computer. This solution not only addresses accuracy challenges, but also may optimize the radar system's tracking capabilities. The successful integration of the time-stamper device might underscore its value in improving data acquisition and analysis, marking a significant advancement in space surveillance and tracking technologies.},
keywords = {Accuracy;Microcontrollers;Spaceborne radar;Surveillance;Operating systems;Sea measurements;Aerospace electronics;Embedded System;NTP;Time-stamper;RADAR},
pubstate = {published},
tppubtype = {inproceedings}
}
This work presents a hardware implementation of the NTP-synchronized time-stamper for RADAR signal acquisition which has significantly enhanced the precision and robustness of the Cheia ground-based FMCW space radar system. By utilizing a bare-metal STM32 microcontroller for on-demand synchronization and data management, the system now ensures accurate time alignment and seamless information transfer to the controlling computer. This solution not only addresses accuracy challenges, but also may optimize the radar system's tracking capabilities. The successful integration of the time-stamper device might underscore its value in improving data acquisition and analysis, marking a significant advancement in space surveillance and tracking technologies.
2.
Bira, Calin; Ionescu, Liviu; Rusu-Casandra, Alexandru
The Radar Signal Processor of the First Romanian Space Surveillance Radar Journal Article
In: REMOTE SENSING, vol. 15, no. 14, 2023.
Abstract | Links | BibTeX | Tags: radar; space debris; space situation awareness; low Earth orbit; digital signal processing
@article{WOS:001069861300001,
title = {The Radar Signal Processor of the First Romanian Space Surveillance
Radar},
author = {Calin Bira and Liviu Ionescu and Alexandru Rusu-Casandra},
doi = {10.3390/rs15143630},
year = {2023},
date = {2023-07-01},
journal = {REMOTE SENSING},
volume = {15},
number = {14},
publisher = {MDPI},
address = {MDPI AG, Grosspeteranlage 5, CH-4052 BASEL, SWITZERLAND},
abstract = {This paper describes the work for the radar signal processor, the core
of the Cheia space surveillance radar. It presents the basic operation,
the requirements and the achieved processing performance together with a
description of optimizations both in terms of signal-to-noise ratio and
in terms of software processing. The Cheia Radar is financed by the
European Space Agency and will be used for the tracking of low Earth
orbit objects and for refining the international catalogs of space
objects.},
keywords = {radar; space debris; space situation awareness; low Earth orbit; digital signal processing},
pubstate = {published},
tppubtype = {article}
}
This paper describes the work for the radar signal processor, the core
of the Cheia space surveillance radar. It presents the basic operation,
the requirements and the achieved processing performance together with a
description of optimizations both in terms of signal-to-noise ratio and
in terms of software processing. The Cheia Radar is financed by the
European Space Agency and will be used for the tracking of low Earth
orbit objects and for refining the international catalogs of space
objects.
of the Cheia space surveillance radar. It presents the basic operation,
the requirements and the achieved processing performance together with a
description of optimizations both in terms of signal-to-noise ratio and
in terms of software processing. The Cheia Radar is financed by the
European Space Agency and will be used for the tracking of low Earth
orbit objects and for refining the international catalogs of space
objects.
3.
Bîră, Călin; Rusu-Casandra, Alexandru
Dataset of Spatial Objects Acquired using Romania's First Ground-Based Space Tracking Radar Proceedings Article
In: 2022 14th International Conference on Communications (COMM), pp. 1-6, 2022.
Abstract | Links | BibTeX | Tags: Spaceborne radar;Surveillance;Pipelines;Receivers;Radar tracking;Spatial databases;Data models;ground-based space radar dataset;orbiting objects;space surveillance and tracking;space debris
@inproceedings{9817333,
title = {Dataset of Spatial Objects Acquired using Romania's First Ground-Based Space Tracking Radar},
author = {Călin Bîră and Alexandru Rusu-Casandra},
doi = {10.1109/COMM54429.2022.9817333},
year = {2022},
date = {2022-06-01},
booktitle = {2022 14th International Conference on Communications (COMM)},
pages = {1-6},
abstract = {Raw spatial-objects radar data is scarce and hard to obtain, obstructing simulations and making improvements to the processing pipeline rather difficult. We provide such a radar dataset of five spatial objects, acquired using the Romania's first spatial-object tracking radar, the Cheia Radar. The dataset contains the tracking of five different objects for a few minutes, using 125W transmitting power and a 2-channel 16-bit 100MSa/s ADC for the receiver end. The input conditions/TLE and the output data format are described; the digital processing pipeline used to extract relevant data is specified so that other researchers may easily use the dataset, which is available on Microsoft Sharepoint.},
keywords = {Spaceborne radar;Surveillance;Pipelines;Receivers;Radar tracking;Spatial databases;Data models;ground-based space radar dataset;orbiting objects;space surveillance and tracking;space debris},
pubstate = {published},
tppubtype = {inproceedings}
}
Raw spatial-objects radar data is scarce and hard to obtain, obstructing simulations and making improvements to the processing pipeline rather difficult. We provide such a radar dataset of five spatial objects, acquired using the Romania's first spatial-object tracking radar, the Cheia Radar. The dataset contains the tracking of five different objects for a few minutes, using 125W transmitting power and a 2-channel 16-bit 100MSa/s ADC for the receiver end. The input conditions/TLE and the output data format are described; the digital processing pipeline used to extract relevant data is specified so that other researchers may easily use the dataset, which is available on Microsoft Sharepoint.
4.
Ionescu, Liviu; Rusu-Casandra, Alexandru; Bira, Calin; Tatomirescu, Alexandru; Tramandan, Ionut; Scagnoli, Roberto; Istriteanu, Dan; Popa, Andrei-Edward
Development of the Romanian Radar Sensor for Space Surveillance and Tracking Activities Journal Article
In: SENSORS, vol. 22, no. 9, 2022.
Abstract | Links | BibTeX | Tags: space; surveillance; tracking; SSA; SST; LEO; radar; monostatic; debris
@article{WOS:000794693300001,
title = {Development of the Romanian Radar Sensor for Space Surveillance and
Tracking Activities},
author = {Liviu Ionescu and Alexandru Rusu-Casandra and Calin Bira and Alexandru Tatomirescu and Ionut Tramandan and Roberto Scagnoli and Dan Istriteanu and Andrei-Edward Popa},
doi = {10.3390/s22093546},
year = {2022},
date = {2022-05-01},
journal = {SENSORS},
volume = {22},
number = {9},
publisher = {MDPI},
address = {MDPI AG, Grosspeteranlage 5, CH-4052 BASEL, SWITZERLAND},
abstract = {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.},
keywords = {space; surveillance; tracking; SSA; SST; LEO; radar; monostatic; debris},
pubstate = {published},
tppubtype = {article}
}
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.
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.