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This paper presents an adaptive multi-model framework for jointly estimating spacecraft attitude and star-tracker misalignments in GPS-denied deep-space CubeSat missions. A Multiplicative Extended Kalman Filter (MEKF) estimates attitude,…

Systems and Control · Electrical Eng. & Systems 2026-01-06 Ridma Ganganath , Simone Servadio , David Daeyoung Lee

The determination of extrasolar planet masses with the radial velocity (RV) technique requires spectroscopic Doppler information from the planet's host star, which varies with stellar brightness and temperature. We analyze Doppler…

Solar and Stellar Astrophysics · Physics 2020-03-04 Ansgar Reiners , Mathias Zechmeister

Multiple-input multiple-output (MIMO) radar offers several performance and flexibility advantages over traditional radar arrays. However, high angular and Doppler resolutions necessitate a large number of antenna elements and the…

Signal Processing · Electrical Eng. & Systems 2025-09-11 Chandrashekhar Rai , Himali Singh , Arpan Chattopadhyay

We present radial velocity (RV) measurements of our sample of 40 M dwarfs from our planet search programme with VLT+UVES begun in 2000. Although with our RV precision down to 2 - 2.5 m/s and timebase line of up to 7 years, we are capable of…

Earth and Planetary Astrophysics · Physics 2018-11-20 M. Zechmeister , M. Kürster , M. Endl

We present the complete Bayesian statistical analysis of the HArps-n red Dwarf Exoplanet Survey (HADES), which monitored the radial velocities of a large sample of M dwarfs with HARPS-N at TNG, over the last 6 years. The targets were…

Radar Automated Target Recognition (RATR) for Unmanned Aerial Vehicles (UAVs) involves transmitting Electromagnetic Waves (EMWs) and performing target type recognition on the received radar echo, crucial for defense and aerospace…

Signal Processing · Electrical Eng. & Systems 2024-08-19 Michael Potter , Murat Akcakaya , Marius Necsoiu , Gunar Schirner , Deniz Erdogmus , Tales Imbiriba

We propose to use a high throughput and high precision multi-object dispersed fixed-delay interferometer for all sky Doppler surveys for extrasolar planets. This instrument, a combination of a fixed-delay interferometer with a moderate…

Astrophysics · Physics 2016-08-30 Jian Ge , Suvrath Mahadevan , Julian van Eyken , Curtis DeWitt , Stuart Shaklan

Context. Current exoplanet surveys are focused on detecting small exoplanets orbiting in the liquid-water habitable zones of their host stars. Despite the recent significant advancements in instrumental developments, the current limitation…

We present MESS, a fully automated algorithm for identifying and characterizing double-lined spectroscopic binaries (SB2) in large databases of multi-epoch spectra. MESS extends the two-dimensional TODCOR approach to a global multi-epoch…

Solar and Stellar Astrophysics · Physics 2026-02-06 Gil Nachmani , Simchon Faigler , Tsevi Mazeh

The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectrum for each M dwarf. These spectra cover the wavelength…

Solar and Stellar Astrophysics · Physics 2018-04-25 A. Reiners , M. Zechmeister , J. A. Caballero , I. Ribas , J. C. Morales , S. V. Jeffers , P. Schöfer , L. Tal-Or , A. Quirrenbach , P. J. Amado , A. Kaminski , W. Seifert , M. Abril , J. Aceituno , F. J. Alonso-Floriano , M. Ammler-von Eiff , R. Antona , G. Anglada-Escudé , H. Anwand-Heerwart , B. Arroyo-Torres , M. Azzaro , D. Baroch , D. Barrado , F. F. Bauer , S. Becerril , V. J. S. Béjar , D. Benítez , Z. M. Berdiñas , G. Bergond , M. Blümcke , M. Brinkmöller , C. del Burgo , J. Cano , M. C. Cárdenas Vázquez , E. Casal , C. Cifuentes , A. Claret , J. Colomé , M. Cortés-Contreras , S. Czesla , E. Díez-Alonso , S. Dreizler , C. Feiz , M. Fernández , I. M. Ferro , B. Fuhrmeister , D. Galadí-Enríquez , A. Garcia-Piquer , M. L. García Vargas , L. Gesa , V. Gómez , Galera , J. I. González Hernández , R. González-Peinado , U. Grözinger , S. Grohnert , J. Guàrdia , E. W. Guenther , A. Guijarro , E. de Guindos , J. Gutiérrez-Soto , H. -J. Hagen , A. P. Hatzes , P. H. Hauschildt , R. P. Hedrosa , J. Helmling , Th. Henning , I. Hermelo , R. Hernández Arabí , L. Hernández Castaño , F. Hernández Hernando , E. Herrero , A. Huber , P. Huke , E. Johnson , E. de Juan , M. Kim , R. Klein , J. Klüter , A. Klutsch , M. Kürster , M. Lafarga , A. Lamert , M. Lampón , L. M. Lara , W. Laun , U. Lemke , R. Lenzen , R. Launhardt , M. López del Fresno , J. López-González , M. López-Puertas , J. F. López Salas , J. López-Santiago , R. Luque , H. Magán Madinabeitia , U. Mall , L. Mancini , H. Mandel , E. Marfil , J. A. Marín Molina , D. Maroto , Fernández , E. L. Martín , S. Martín-Ruiz , C. J. Marvin , R. J. Mathar , E. Mirabet , D. Montes , M. E. Moreno-Raya , A. Moya , R. Mundt , E. Nagel , V. Naranjo , L. Nortmann , G. Nowak , A. Ofir , R. Oreiro , E. Pallé , J. Panduro , J. Pascual , V. M. Passegger , A. Pavlov , S. Pedraz , A. Pérez-Calpena , D. Pérez Medialdea , M. Perger , M. A. C. Perryman , M. Pluto , O. Rabaza , A. Ramón , R. Rebolo , P. Redondo , S. Reffert , S. Reinhart , P. Rhode , H. -W. Rix , F. Rodler , E. Rodríguez , C. Rodríguez-López , A. Rodríguez Trinidad , R. -R. Rohloff , A. Rosich , S. Sadegi , E. Sánchez-Blanco , M. A. Sánchez Carrasco , A. Sánchez-López , J. Sanz-Forcada , P. Sarkis , L. F. Sarmiento , S. Schäfer , J. H. M. M. Schmitt , J. Schiller , A. Schweitzer , E. Solano , O. Stahl , J. B. P. Strachan , J. Stürmer , J. C. Suárez , H. M. Tabernero , M. Tala , T. Trifonov , S. M. Tulloch , R. G. Ulbrich , G. Veredas , J. I. Vico Linares , F. Vilardell , K. Wagner , J. Winkler , V. Wolthoff , W. Xu , F. Yan , M. R. Zapatero Osorio

This thesis focuses on the detection of extrasolar planets via the transit method, and more specifically addresses issues relevant to the preparation of upcoming space missions such as CoRoT, Kepler, Eddington, aiming to detect terrestrial…

Astrophysics · Physics 2007-05-23 Suzanne Aigrain

Future wireless communication systems are envisioned to share radio frequency (RF) spectrum, with other services such as radars, in order to meet the growing spectrum demands. In this paper, we consider co-channel spectrum sharing between…

Information Theory · Computer Science 2016-11-18 Awais Khawar , Ahmed Abdelhadi , T. Charles Clancy

We derive the absolute physical and orbital parameters for a sample of 18 detached eclipsing binaries from the \emph{All Sky Automated Survey} (ASAS) database based on the available photometry and our own radial velocity measurements. The…

Solar and Stellar Astrophysics · Physics 2015-05-14 K. G. Hełminiak , M. Konacki , M. Ratajczak , M. Muterspaugh

In the identification of new planetary candidates in transit surveys, the employment of Deep Learning models proved to be essential to efficiently analyse a continuously growing volume of photometric observations. To further improve the…

Multi-wavelength transit and secondary-eclipse light-curve observations are some of the most powerful techniques to probe the thermo-chemical properties of exoplanets. Although the large planet-to-star brightness contrast and few available…

Earth and Planetary Astrophysics · Physics 2016-04-06 Patricio E. Cubillos

Bayesian estimation with an explicit transitional prior is required for a tracking algorithm to be embedded in most multi-target tracking frameworks. This paper describes a novel approach capable of tracking maneuvering spacecraft with an…

Systems and Control · Electrical Eng. & Systems 2024-10-25 Enrico M. Zucchelli , Brandon A. Jones

Conditional random field (CRF) and Structural Support Vector Machine (Structural SVM) are two state-of-the-art methods for structured prediction which captures the interdependencies among output variables. The success of these methods is…

Machine Learning · Computer Science 2015-03-19 Qi Mao , Ivor W. Tsang

Bayesian additive regression trees (BART) is a semi-parametric regression model offering state-of-the-art performance on out-of-sample prediction. Despite this success, standard implementations of BART typically provide inaccurate…

Methodology · Statistics 2023-02-27 Meijiang Wang , Jingyu He , P. Richard Hahn

We investigated the discrepancy between planetary mass determination using the transit timing variations (TTVs) and radial velocities (RVs), by analysing the multi-planet system Kepler-9. Despite being the first system characterised with…

Radial-velocity follow-up of stars harbouring transiting planets detected by TESS is expected to require very large amounts of expensive telescope time in the next few years. Therefore, scheduling strategies should be implemented to…

Earth and Planetary Astrophysics · Physics 2021-03-31 Lorenzo Cabona , Pedro Viana , Marco Landoni , João Faria
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