Results 81 to 90 of about 63,794 (294)
Advanced Materials Technologies, EarlyView.Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale +3 more
wiley +1 more source
KDFE: Robust KNN-Driven Fusion Estimator for LEO-SoOP Under Multi-Beam Phased-Array Dynamics
Remote SensingAccurate Doppler frequency estimation for Low Earth Orbit (LEO)-based Signals of Opportunity (SoOP) positioning faces significant challenges from extreme dynamics (±40 kHz Doppler shift, 0.4 Hz/ms fluctuation) and severe SNR fluctuations induced by multi-
Jiaqi Yin +5 more
doaj +1 more source
Tropospheric monitoring technology for gravity wave experiments [PDF]
Tropospheric refractivity fluctuations are an important error source for gravity wave detection by Doppler tracking in that they alter the phase and phase rate of electromagnetic signals. Estimates are presented of the effect of tropospheric fluctuations
Resch, G. M., Treuhaft, R. N.
core +1 more source
Advanced Materials Technologies, EarlyView.This work presents a fully synthetic, 3D‐printed dynamic heart model with left‐side anatomy featuring sutured mitral valve chordae tendineae analogs, embedded actuators for physiologic wall contraction, and customized flexible pressure sensors for the left ventricle.
Alejandro Guillen Obando +7 more
wiley +1 more source
The effect of clock, media, and station location errors on Doppler measurement accuracy [PDF]
Doppler tracking by the Deep Space Network (DSN) is the primary radio metric data type used by navigation to determine the orbit of a spacecraft.
Miller, J. K.
core +1 more source
Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review
Advanced Robotics Research, EarlyView.Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley +1 more source
NavigationThis paper provides a comprehensive theoretical and experimental description of how to exploit Starlink low Earth orbit (LEO) satellites for positioning, navigation, and timing (PNT).
Sharbel Kozhaya +2 more
doaj +1 more source
Moving Object Localization Using Sound-Based Positioning System with Doppler Shift Compensation
Robotics, 2013 Sound-based positioning systems are a potential alternative low-cost navigation system. Recently, we developed such an audible sound-based positioning system, based on a spread spectrum approach.
Slamet Widodo +7 more
doaj +1 more source
Doppler‐aided rapid positioning method for BDS receivers
Electronics Letters, 2015 BeiDou navigation satellite system (BDS) adopts mixed constellation design. In addition, the rate of GEO NAV message is 500 bit/s. Therefore, a rapid BDS positioning algorithm with Doppler‐aided is presented to reduce the time to first fix. First, the approximate position is obtained using full pseudo‐ranges of GEO satellites and Doppler of all visible
Shourang Jing +3 more
openaire +1 more source
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source