Results 31 to 40 of about 135,008 (218)
Target tracking enhancement using a Kalman filter in the presence of interference [PDF]
, 2009 In this paper we present a new target tracking enhancement system that uses a Kalman filter in the presence of interference. If the radar (seeker) is affected by different types of interference, this will affect the missile trajectory towards the target ...
Elgamel, S.A.E.H., Soraghan, J.J.
core +1 more source
Radio Direction Finding in Air Traffic Services
Promet (Zagreb), 2005 The paper analyses the Radio Direction Finding principlefor navigation and swveillance system. Radio Direction Findinginvolves locating the bearing of a transmitter called a radiobeacon.
Andrej Novak
doaj +1 more source
A novel Technique for Improving the Angular Accuracy of Doppler VOR Receivers [PDF]
Advances in Radio Science, 2021 Doppler VOR (D-VOR) transmitters are used as navigation aids in aviation. They transmit an omnidirectional phase reference in an amplitude-modulated (AM) sideband and directional phase information on a frequency-modulated (FM) subcarrier.
K. Schubert, J. Werner, J. Wellhausen
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Optimal Trajectories for Homing Navigation with Bearing Measurements
IFAC Proceedings Volumes, 2008 In this paper we examine the geometry of a number of navigation schemes for guiding a pursuer from a fixed initial position to a final target position. We explicitly characterize the optimal pursuer trajectories for the given problems in terms of minimizing the error in an unbiased estimate of the target position from successive bearing measurements ...
Adrian N. Bishop, Pubudu N. Pathirana
openaire +1 more source
Observability-enhanced proportional navigation guidance with bearings-only measurements [PDF]
The Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1999 AbstractWe analyse the performance of the additive observable proportional navigation guidance system, which is well-suited for low-cost homing missiles with bearings-only measurements. Closed-form solutions are derived for both manoeuvring and non-manoeuvring targets.
Li, M. Y., Lim, C. C.
openaire +2 more sources
Modern Solar Navigation Techniques
Groundings, 2023 Navigation by sea has proven difficult due to the absence of distinct markers for guidance. One solution for longer journeys was to track the position of celestial bodies as a navigational method, which has become more reliable as mathematical models ...
Alberto Bodas Gallego
doaj +1 more source
Frontiers in Materials, 2019 G95Cr18 stainless bearing steel is used to manufacture rolling bearings widely used in aviation and navigation fields. Twin carbide structure often appears in G95Cr18 stainless bearing steel structure and affects its material properties.
Hao Guo +6 more
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Superior Fluorescent Nanoemulsion Illuminates Hepatocellular Carcinoma for Surgical Navigation
Frontiers in Bioengineering and Biotechnology, 2022 Hepatocellular carcinoma (HCC), the fifth most common cancer worldwide, poses a severe threat to public health. Intraoperative fluorescence imaging provides a golden opportunity for surgeons to visualize tumor-involved margins, thereby implementing ...
Jing Zhu +12 more
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Acoustic positioning and tracking in Portsmouth Harbour, New Hampshire [PDF]
, 2007 Portsmouth Harbor, New Hampshire, is frequently used as a testing area for multibeam and sidescan sonars, and is the location of numerous ground-truthing studies. Having the ability to accurately position underwater sensors is an important aspect of this
Huff, Lloyd C +5 more
core +2 more sources
Dynamic knee alignment and collateral knee laxity and its variations in normal humans
Frontiers in Surgery, 2015 Alignment of normal, arthritic and replaced human knees is a much debated subject as is the collateral ligamentous laxity. Traditional quantitative values have been challenged. Methods used to measure these are also not without flaws.
Kamal eDeep +2 more
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