EUVE J0425.6-5714: A Newly Discovered AM Herculis Star [PDF]
, 1998 We detected a new AM Her star serendipitously in a 25 day observation with the EUVE satellite. A coherent period of 85.82 min is present in the EUVE Deep Survey imager light curve of this source.
Cropper M. +12 more
core +2 more sources
Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region
Satellite Navigation, 2021 Satellite Based Augmentation Systems (SBASs) improve the positioning accuracy and integrity by broadcasting to the civil aviation community the corrections and integrity parameters.
Biao Jin +4 more
doaj +1 more source
Precise Orbit Determination of MEX Flyby Phobos Using Simulated Radiometric and Image Data
Sensors, 2021 A navigation camera or topography camera is a standard payload for deep space missions and the image data are normally used for auto-navigation. In this work, we study the potential contribution of image data in precise orbit determination for deep space
Xinbo Zhu +5 more
doaj +1 more source
Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
, 2010 As the quality and quantity of astrophysical data continue to improve, the precision with which certain astrophysical events can be timed becomes limited not by the data themselves, but by the manner, standard, and uniformity with which time itself is ...
Eastman, Jason +2 more
core +1 more source
Binary system delays and timing noise in searches for gravitational waves from known pulsars [PDF]
, 2007 The majority of fast millisecond pulsars are in binary systems, so that any periodic signal they emit is modulated by both Doppler and relativistic effects.
Pitkin, Matthew, Woan, Graham
core +2 more sources
Laser Terminals on CubeSats: Developments for Telecommunications and Quantum Links
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Satellite‐based laser communication is an emerging technology that is finding its way from research to industry. Compared to radio frequency (RF) systems, it has a more efficient size, weight, and power budget and, furthermore, is license free.
Christian Roubal +8 more
wiley +1 more source
Real‐time and dynamic time transfer method based on double‐differenced real‐time kinematic mode
IET Radar, Sonar & Navigation, 2021 In this study, a real‐time and dynamic time transfer method based on double‐differenced (DD) real‐time kinematic (RTK) mode is proposed. First, the method forms the DD observations of Global Navigation Satellite System (GNSS) to fix the DD ambiguity, and
Rui Tu +7 more
doaj +1 more source
NICMOS Observations of the Transiting Hot Jupiter XO-1b
, 2010 We refine the physical parameters of the transiting hot Jupiter planet XO-1b and its stellar host XO-1 using HST NICMOS observations. XO-1b has a radius Rp=1.21+/-0.03 RJup, and XO-1 has a radius Rs=0.94+/-0.02 RSun, where the uncertainty in the mass of ...
Box +43 more
core +1 more source
Characterizing Power Consumption of Dual-Frequency GNSS of a Smartphone
, 2020 Location service is one of the most widely used features on a smartphone. More and more apps are built based on location services. As such, demand for accurate positioning is ever higher.
Karki, Bikram, Won, Myounggyu
core +1 more source
Direct Detection of Ultralight Dark Matter via Astronomical Ephemeris [PDF]
, 2018 A novel idea of the direct detection to search for a ultralight dark matter based on the interaction between the dark matter and a nucleon is proposed. Solar system bodies feel the dark matter wind and it acts as a resistant force opposing their motions.
arxiv +1 more source