Results 1 to 10 of about 76,054 (305)

A Submillimeter-Level Relative Navigation Technology for Spacecraft Formation Flying in Highly Elliptical Orbit [PDF]

open access: yesSensors, 2020
Spacecraft formation flying (SFF) in highly elliptical orbit (HEO) has attracted a great deal of attention in many space exploration applications, while precise guidance, navigation, and control (GNC) technology—especially precise ranging—are the basis ...
Xiaoliang Wang   +7 more
doaj   +2 more sources

Multi-Satellite Relative Navigation Scheme for Microsatellites Using Inter-Satellite Radio Frequency Measurements [PDF]

open access: yesSensors, 2021
The inter-satellite relative navigation method—based on radio frequency (RF) range and angle measurements—offers good autonomy and high precision, and has been successfully applied to two-satellite formation missions.
Shiming Mo   +5 more
doaj   +2 more sources

GNSS based relative navigation for intentional approximation of aircraft

open access: yesAviation, 2015
In aviation, satellite navigation is generally only used to determine the absolute position of aircraft. We show that the signals can also be used for safe relative navigation provided that a data link exists between the two aircraft.
Emmanuel Schielin, Thomas Dautermann
doaj   +4 more sources

Application of Adaptive Weighted Strong Tracking Unscented Kalman Filter in Non-Cooperative Maneuvering Target Tracking

open access: yesAerospace, 2022
An adaptive weighted strong tracking unscented Kalman filter is proposed in this paper for long-range relative navigation alongside non-cooperative maneuvering targets. First, an equation for obtaining the relative motion of two bodies is derived, it can
Pu Huang   +3 more
doaj   +1 more source

Autonomous Integrity Monitoring for Relative Navigation of Multiple Unmanned Aerial Vehicles

open access: yesRemote Sensing, 2021
Accurate and reliable relative navigation is the prerequisite to guarantee the effectiveness and safety of various multiple Unmanned Aerial Vehicles (UAVs) cooperation tasks, when absolute position information is unavailable or inaccurate.
Yuan Sun
doaj   +1 more source

Methods of mutual high-precision navigation based the use of relative modes of anglemeasuring receivers of global navigation satellite systems signals [PDF]

open access: yesКосмические аппараты и технологии, 2022
The article presents the results of experimental studies of mutual high-precision navigation methods for unmanned and specialized transport systems. The proposed methods are based on the application of the relative operating modes of two or more angle ...
D. D. Dmitriev   +4 more
doaj   +1 more source

A Real-Time Simulator for Navigation in GNSS-Denied Environments of UAV Swarms

open access: yesApplied Sciences, 2023
Accurate localization is the foundation of unmanned aerial vehicle (UAV) swarm applications in the global navigation satellite system (GNSS)-denied environment.
He Zhang   +5 more
doaj   +1 more source

Evaluation of Precise Microwave Ranging Technology for Low Earth Orbit Formation Missions with Beidou Time-Synchronize Receiver

open access: yesSensors, 2021
In this study, submillimeter level accuracy K-band microwave ranging (MWR) equipment is demonstrated, aiming to verify the detection of the Earth’s gravity field (EGF) and digital elevation models (DEM), through spacecraft formation flying (SFF) in low ...
Xiaoliang Wang   +5 more
doaj   +1 more source

Relative expressive power of navigational querying on graphs [PDF]

open access: yesInformation Sciences, 2015
An extended abstract announcing the results of this paper was presented at the 14th International Conference on Database Theory, Uppsala, Sweden, March ...
George H. L. Fletcher   +7 more
openaire   +6 more sources

Improved GPS-based Satellite Relative Navigation Using Femtosecond Laser Relative Distance Measurements [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
This study developed an approach for improving Carrier-phase Differential Global Positioning System (CDGPS) based realtime satellite relative navigation by applying laser baseline measurement data.
Hyungjik Oh   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy