Results 81 to 90 of about 5,569,552 (285)

BDS-PPP-B2b-Based Smartphone Precise Positioning Model Enhanced by Mixed-Frequency Data and Hybrid Weight Function

Applied Sciences
Compared to high-cost hardware-based Global Navigation Satellite System (GNSS) positioning techniques, smartphone-based precise positioning technology plays an important role in applications such as the Internet of Things (IoT). Since Google released the
Zhouzheng Gao, Zhixiong Wu, Shiyu Liu, Cheng Yang   +3 more
doaj   +1 more source

Multi-GNSS Single Frequency Precise Point Positioning

, 2018
Single Frequency-Precise Point Positioning (SF-PPP) processing strategy is a hot topic in GNSS context, owing to the advantages of a stand-alone, accurate and cost efficiency positioning. However, the existing SF-PPP methods can be hardly implemented for
Antonio Angrisano, Anna Innac, Angrisano, A, Innac, A, Gaglione, S, Salvatore Gaglione   +5 more
core   +1 more source

Image Mapping Accuracy Evaluation Using UAV with Standalone, Differential (RTK), and PPP GNSS Positioning Techniques in an Abandoned Mine Site

, 2023
Global navigation satellite systems (GNSSs) provide a common positioning method that utilizes satellite signals to determine the spatial location of a receiver.
Jongmun Cha, Hyeong-Dong Park, Chang-Uk Hyun, Hanjin Kim   +3 more
core   +1 more source

Harnessing blood clot as a native scaffold for orchestrating tissue repairs and regeneration

BMEMat, EarlyView.
The blood clot, owing to its dynamic composition and unique microenvironment, holds significant yet underappreciated potential for tissue engineering. This review systematically summarizes the pathophysiology of clot formation, the key regulatory factors shaping its microenvironment, and its applications in both pre‐clinical and clinical settings ...
Gao‐peng Dang, Yu‐zhu Wang, Yi‐fei Wang, Que Bai, Jia‐xin Hao, Zhi‐ting Li, Xiao‐qing Cao, Yu Wei, Yue Feng, Ji‐hua Chen, Franklin R. Tay, Rui‐bing Wang, Jun‐ting Gu, Li‐na Niu   +13 more
wiley   +1 more source

An all‐in‐one fucosylated gold nanocluster probe enables NIR‐II imaging and multi‐mechanistic therapy of acute kidney injury

BMEMat, EarlyView.
This study developed a fucoside‐targeted gold nanocluster probe that enables early NIR‐II imaging and multi‐mechanistic therapy for acute kidney injury, effectively mitigating oxidative stress, modulating inflammatory responses, and inhibiting ferroptosis to improve renal outcomes. Abstract Acute kidney injury (AKI) remains a life‐threatening condition
Ping Zhang, Boning Tan, Suqing Feng, Beibei Gu, Ting Feng, Haiguang Zhu, Jianping Xie, Xun Yuan   +7 more
wiley   +1 more source

APPPOLO: A Brazilian Processing Software for Multi-GNSS Precise Point Positioning [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This paper presents the development and evaluation of a Brazilian software for Precise Point Positioning (PPP) using multiple Global Navigation Satellite Systems (GNSS).
J. P. V. Zaupa, D. B. M. Alves, P. D. T. Setti Jr   +2 more
doaj   +1 more source

Shaping Energy Transitions: Sectoral Demand, Climate Risk Exposure, and Renewable Pathways in Sub‐Saharan Africa

Business Strategy and the Environment, EarlyView.
ABSTRACT Energy is a fundamental driver of economic growth, shaping productivity, industrialization, and long‐term economic resilience. In sub‐Saharan Africa (SSA), where energy access remains uneven and infrastructure is underdeveloped, understanding sector‐specific energy demand is essential for designing sustainable energy strategies.
Michael Appiah, Emmanuel Baffour Gyau, Genanew Bekele Worku, Simplice A. Asongu   +3 more
wiley   +1 more source

PENGARUH AKTIVITAS IONOSFER TERHADAP TINGKAT KETELITIAN GPS DENGAN METODE PRECISE POINT POSITIONING (PPP)

, 2016
GPS (Global Positioning System) adalah sistem radio navigasi dan penentuan posisi yang berbasiskan satelit.Saat ini telah berkembang sistem penentuan posisi atau lokasi serta waktu berbasis satelit bernama GNSS (Global Navigation Satellite System ...
Prakoso, Sutopo Yuda
core   +1 more source

Tightly Coupled Integration of Ionosphere-Constrained Precise Point Positioning and Inertial Navigation Systems

Sensors, 2015
The continuity and reliability of precise GNSS positioning can be seriously limited by severe user observation environments. The Inertial Navigation System (INS) can overcome such drawbacks, but its performance is clearly restricted by INS sensor errors ...
Zhouzheng Gao, Hongping Zhang, Maorong Ge, Xiaoji Niu, Wenbin Shen, Jens Wickert, Harald Schuh   +6 more
doaj   +1 more source

Effect of ellipsoidal height variation on precise point positioning [PDF]

, 2019
GNSS (Global Navigation Satellite Systems - Küresel Navigasyon Uydu Sistemleri) yardımıyla tek noktanın mutlak konum belirlemesi, literatürde Hassas Nokta Konumlama (PPP: Precise Point Positioning) olarak adlandırılmaktadır. Alıcının tek olması nedeniyle
Abbak, Ramazan Alpay, Arıkan, Duygu
core   +1 more source