Results 21 to 30 of about 14,978 (220)
A passive satellite deorbiting strategy for MEO using solar radiation pressure and the J2 effect [PDF]
, 2011 The growing population of space debris poses a serious risk to the future of space flight. To effectively manage the increase of debris in orbit, end-of life disposal has become a key requirement for future missions.
Colombo, Camilla +2 more
core +1 more source
Atmosphere, 2022 Compared to the zenith hydrostatic delay (ZHD) obtained from the Saastamonien model based on in-situ measured meteorological (IMM) data and radiosonde-derived weighted mean temperature (Tm), the ZHD and Tm deviations of the GPT3 model have shown obvious ...
Li Li +5 more
doaj +1 more source
FLAMINGO – Fulfilling enhanced location accuracy in the mass-market through initial GalileO services [PDF]
, 2018 This paper discusses FLAMINGO, an initiative that will provide a high accuracy positioning service to be used by mass market applications. The status and future for the initiative are discussed, the required accuracies and other location parameters are ...
Arzel, Laurent +7 more
core +1 more source
A Decentralized Processing Schema for Efficient and Robust Real-time Multi-GNSS Satellite Clock Estimation [PDF]
, 2019 Real-time multi-GNSS precise point positioning (PPP) requires the support of high-rate satellite clock corrections. Due to the large number of ambiguity parameters, it is difficult to update clocks at high frequency in real-time for a large reference ...
Ge, Maorong +4 more
core +1 more source
ANALYSIS OF URBAN FOREST CARBON SEQUESTRATION CAPACITY: A CASE STUDY OF ZENGDU, SUIZHOU [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Carbon-fixing and oxygen-releasing is an important content of forest ecosystem serving in city. Analysis of forest ecosystem carbon sequestration capacity can provide scientific reference for urban forest management strategies.
X. Yu, H. Wang, W. Cai, Y. Han
doaj +1 more source
Satellite mapping in cities and below cities: how good is it now? [PDF]
, 2016 Global navigation satellite systems (GNSS) have existed since the launch of the US global positioning system constellation in 1978. There is an increasing need for better maps in the digital age, particularly for buried utilities.
Barnes J +21 more
core +1 more source
Real time cycle slip detection of Beidou single frequency carrier phase based on Kalman filtering
Gong-kuang zidonghua, 2016 In application of Beidou single frequency receiver in real time mining deformation monitoring, in order to improve precision of cycle slip detection in measurement preconditioning of Beidou single frequency carrier phase, real time cycle slip detection ...
MA Xiaodong +3 more
doaj +1 more source
Geographically Weighted Flow Cross K-Function for Network-Constrained Flow Data
Applied Sciences, 2022 Network-constrained spatial flows are usually used to describe movements between two spatial places on a road network. The analysis of the spatial associations between different types of network-constrained spatial flows plays a key role in understanding
Weijie Zhang +4 more
doaj +1 more source
The use of PSD analysis on BeiDou and GPS 10Hz dynamic data for change detection [PDF]
, 2016 This paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner ...
Chen +25 more
core +1 more source
BMC Bioinformatics, 2022 Background MircoRNAs (miRNAs) play a central role in diverse biological processes of Camellia sinensis var.assamica (CSA) through their associations with target mRNAs, including CSA growth, development and stress response.
Haisong Feng +4 more
doaj +1 more source