Results 31 to 40 of about 38,036 (246)
A Direct Attitude Determination Approach Based on GPS Double-Difference Carrier Phase Measurements
Journal of Applied Mathematics, 2014 The principle of the traditional attitude solution approach based on GPS (Global Position System) is to get the attitude matrix according to the relationship of coordinates.
Jianhua Cheng, Jing Wang, Lin Zhao
doaj +1 more source
Multiantenna GPS-Over-Fiber System for Attitude Determination Using Phase-Derived Range Measurement
IEEE Photonics Journal, 2019 A multiantenna global positioning system over fiber (GPS-over-fiber) system with real-time line bias monitoring is proposed for attitude determination of vehicles.
Xiangchuan Wang +3 more
doaj +1 more source
Comparative Analysis of Low Earth Orbit Satellite Attitude Determination using Sensor Integration and Attitude Estimation using Kalman Filter [PDF]
INCAS Bulletin, 2021 The objective of the research is to undergo a performance comparison in terms of accuracy, convergence time, amount of memory, etc. between the satellite attitude determination and attitude estimation using non-linear filters.
M. RAJA
doaj +1 more source
IEEE Access, 2018 The observability and observable degree of attitude errors in tightly coupled global navigation satellite system/inertial navigation system attitude determination system are studied in this paper.
Yong Wang +4 more
doaj +1 more source
Star Identification and Attitude Determination With Projective Cameras
IEEE Access, 2021 Images of starfields collected by a projective camera are useful for a variety of scientific and engineering purposes. This utility is exemplified by star trackers, which are amongst the most commonly used sensors for determining the attitude of modern ...
John A. Christian, John L. Crassidis
doaj +1 more source
Calibration of Magnetometers with GNSS Receivers and Magnetometer-Aided GNSS Ambiguity Fixing
Sensors, 2017 Magnetometers provide compass information, and are widely used for navigation, orientation and alignment of objects. As magnetometers are affected by sensor biases and eventually by systematic distortions of the Earth magnetic field, a calibration is ...
Patrick Henkel
doaj +1 more source
Transient Attitude Motion of TNS-0#2 Nanosatellite during Atmosphere Re-Entry
Applied Sciences, 2021 Attitude motion reconstruction of the Technological NanoSatellite TNS-0 #2 during the last month of its mission is presented in the paper. The satellite was designed to test the performance of the data transmission via the Globalstar communication system.
Danil Ivanov +8 more
doaj +1 more source
International Journal of Metrology and Quality Engineering, 2017 Satellite's attitude can be determined by using several different ways. In order to use a recursive filter to determine the attitude especially after crucial intervals for the satellite including detumbling, eclipse, etc., single-frame methods can be ...
Cilden Guler Demet, Hajiyev Chingiz
doaj +1 more source
Sensors, 2013 The Chinese BeiDou system (BDS), having different types of satellites, is an important addition to the ever growing system of Global Navigation Satellite Systems (GNSS).
Noor Raziq +2 more
doaj +1 more source
Long‐term hippocampal alterations and cognitive impairment in a murine model of surgical sepsis
FEBS Open Bio, EarlyView.Using a mouse model of surgical sepsis, we tested long‐term memory and analyzed the transcriptome of single cells isolated from the hippocampus. Survivor mice showed worse memory, loss of certain brain cell subpopulations, and abnormal immune cell activity—suggesting that post‐sepsis brain alterations may be linked to cognitive deficits.
Dong Seong Cho +4 more
wiley +1 more source