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Dynamic radiographic measurement of 3D TKA kinematics has provided important information for implant design and surgical technique for over 30 years. However, current methods of measuring TKA kinematics are too cumbersome or time-consuming…

Quantitative Methods · Quantitative Biology 2022-05-03 Andrew Jensen , Paris Flood , Lindsey Palm-Vlasak , Will Burton , Paul Rullkoetter , Scott Banks

The LISA mission is a space interferometer aiming at the detection of gravitational waves in the [$10^{-4}$,$10^{-1}$] Hz frequency band. In order to reach the gravitational wave detection level, a Time Delay Interferometry (TDI) method…

General Relativity and Quantum Cosmology · Physics 2008-11-26 S. Pireaux

This study demonstrates the efficacy of ML-based trend inference using data from the Large Plasma Device (LAPD). The LAPD is a flexible basic plasma science device with a high discharge repetition rate (0.25-1 Hz) and reproducible plasmas…

Plasma Physics · Physics 2025-08-07 Phil Travis , Jacob Bortnik , Troy Carter

In the past few years, there has been a resurgence in studies towards space-based optical/infrared interferometry, particularly with the vision to use the technique to discover and characterise temperate Earth-like exoplanets around solar…

Instrumentation and Methods for Astrophysics · Physics 2023-09-27 Jonah T. Hansen , Samuel Wade , Michael J. Ireland , Tony D. Travouillon , Tiphaine Lagadec , Nicholas Herrald , Joice Mathew , Stephanie Monty , Adam D. Rains

This paper reviews methods for autonomous tuning of optical transceivers, based on an overhead management channel between the modules on both sides of the link. Different implementation options for the tuning principle, as well as for the…

Signal Processing · Electrical Eng. & Systems 2022-03-22 Michael H. Eiselt

LISA Pathfinder (LPF) was a technology pioneering mission designed to test key technologies required for gravitational wave detection in space. In the low frequency regime (milli-Hertz and below), where space-based gravitational wave…

Time-delay interferometry (TDI) is a post-processing technique used to reduce laser noise in heterodyne interferometric measurements with unequal armlengths, a situation characteristic of space gravitational detectors such as Laser…

General Relativity and Quantum Cosmology · Physics 2021-07-14 Jean-Baptiste Bayle , Olaf Hartwig , Martin Staab

Unlike ground-based interferometric gravitational wave detectors, large space-based systems will not be rigid structures. When the end-stations of the laser interferometer are freely flying spacecraft, the armlengths will change due to…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Shane L. Larson , Ronald W. Hellings , William A. Hiscock

Accurately calibrating the center-of-mass (CoM) offset between the spacecraft (SC) and the inertial sensor test mass (TM) is crucial for space-based gravitational-wave (GW) antennas, such as LISA and Taiji. Current calibration methods…

General Relativity and Quantum Cosmology · Physics 2026-01-23 Haoyue Zhang , Dong Ye , Peng Xu , Yunhai Geng , Li-E Qiang , Ziren Luo

Tilt-to-length (TTL) noise induced by angular jitter of spacecraft and test masses can affect the sensitivity of space-based gravitational-wave detectors such as LISA, Taiji, and TianQin. Such angular jitter can be measured using the…

General Relativity and Quantum Cosmology · Physics 2026-02-09 Xue Wang , Gang Wang

The Laser Interferometer Space Antenna is a foreseen space-based gravitational wave detector, which aims to detect 10^20 strains in the frequency range from 0.1 mHz to 1 Hz. It is a triangular constellation of three spacecraft, with equal…

Instrumentation and Methods for Astrophysics · Physics 2022-02-17 C P Sasso , G Mana , S Mottini

We study the calibration process in circular ultrasound tomography devices where the sensor positions deviate from the circumference of a perfect circle. This problem arises in a variety of applications in signal processing ranging from…

Machine Learning · Computer Science 2016-11-18 Reza Parhizkar , Amin Karbasi , Sewoong Oh , Martin Vetterli

A simple method is presented for removing the amplitude, frequency and phase modulations from the Laser Interferometer Space Antenna (LISA) data stream for sources at any sky location. When combined with an excess power trigger or the fast…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Neil J. Cornish

Laser frequency stabilization is notably one of the major challenges on the way to a space-borne gravitational wave observatory. The proposed Laser Interferometer Space Antenna (LISA) is presently under development in an ESA, NASA…

General Relativity and Quantum Cosmology · Physics 2015-06-25 Markus Herz

This paper describes a concept for the high-accuracy absolute calibration of the instrumental polarization introduced by the primary mirror of a large-aperture telescope. This procedure requires a small aperture with polarization…

Astrophysics · Physics 2009-11-10 H. Socas-Navarro

General description of an on-line procedure of calibration for IGRT (Image Guided Radiotherapy) is given. The algorithm allows to improve targeting cancer by estimating its position in space and suggests appropriate correction of the…

Medical Physics · Physics 2019-04-02 R. A. Kycia , Z. Tabor , A. Woszczyna , D. Kabat , M. Tulik , Z. Latała

This work describes the implementation of a simple and computationally efficient Intelligent Navigation System (INS) for autonomous systems used in areas where human access is impossible. The system uses Laser Range Finder (LRF) readings as…

Navigating the ultrasound (US) probe to the standardized imaging plane (SIP) for image acquisition is a critical but operator-dependent task in conventional freehand diagnostic US. Robotic US systems (RUSS) offer the potential to enhance…

Robotics · Computer Science 2024-12-11 Xihan Ma , Mingjie Zeng , Jeffrey C. Hill , Beatrice Hoffmann , Ziming Zhang , Haichong K. Zhang

Laser Interferometer Space Antenna LISA represents the next frontier in gravitationalwave GW astronomy targeting the detection of millihertz gravitational signals Central to LISAs operation is the nanosecondprecision estimation of the light…

General Relativity and Quantum Cosmology · Physics 2025-07-28 Jean-Baptiste Bayle , Martin Staab , Samuel P. Francis , Emily Rose Rees , Robert Spero , Gerhard Heinzel

We present infrared aperture synthesis maps produced with the upgraded IOTA interferometer. Michelson interferograms on the close binary system Capella (Alpha Aur) were obtained in the H-band between 2002 November 12 and 16 using the IONIC3…

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