Results 41 to 50 of about 11,569 (270)
Navigation, 2022 A modified generalized trigonometric series (GTS) function is presented for the joint estimation of local ionospheric activities and differential code biases (DCBs) of the third-generation BeiDou navigation satellite system (BeiDou-3).
Ningbo Wang +3 more
doaj +1 more source
Jamming Effect Analysis of Two Chinese GNSS BeiDou-II Civil Signals [PDF]
, 2012 Threats of electronic warfare, especially to global positioning systems (GPSs), have been rapidly increasing. The development of the Chinese navigation satellite system BeiDou has been extended to a global navigation satellite system (GNSS).
Baek, Jeehyeon +2 more
core +2 more sources
Feasibility of Oil Slick Detection Using BeiDou-R Coastal Simulation [PDF]
, 2017 Oil spills, which can cause severe immediate and long-term harm to marine ecological environments for decades after the initial accident, require rapid and accurate monitoring. Currently, optical and radar satellite images are used to monitor oil spills;
Binbin Li +6 more
core +5 more sources
Single point positioning using full and fractional pseudorange measurements from GPS and BDS [PDF]
, 2020 In conventional global navigation satellite system (GNSS) receivers, usually full pseudorange measurements are required to complete a single point position fix. However, to obtain full pseudorange measurements takes longer time than for fractional pseudorange measurements.
arxiv +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
Deep Learning Based Detector YOLOv5 for Identifying Insect Pests
Applied Sciences, 2022 Insect pests are a major element influencing agricultural production. According to the Food and Agriculture Organization (FAO), an estimated 20–40% of pest damage occurs each year, which reduces global production and becomes a major challenge to crop ...
Iftikhar Ahmad +7 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
Characteristics of BeiDou-3 Experimental Satellite Clocks [PDF]
Remote Sensing, 2018 The characteristics of the improved Atomic Frequency Standard (AFS) operated on the latest BeiDou-3 experimental satellites are analyzed from day-of-year (DOY) 254 to 281, of the year 2017, considering the following three aspects: stability, periodicity, and prediction precision.
Yifei Lv +3 more
openaire +2 more sources
Research Article. Improved Dual Frequency PPP Model Using GPS and BeiDou Observations
Journal of Geodetic Science, 2017 This paper introduces a new dual-frequency precise point positioning (PPP) model, which combines GPS and BeiDou observations. Combining GPS and BeiDou observations in a PPP model offers more visible satellites to the user, which is expected to enhance ...
Afifi A., El-Rabbany A.
doaj +1 more source