Derivation of GPS TEC and receiver bias for Langkawi station in Malaysia

Single - Receiver GPS Phase Bias Resolution

adapt to various targets and datasets. The objective was to design an efficient computer vision system that can learn to detect multiple targets in large images with unknown backgrounds. Because the target size is small relative to the image size in this problem, there are many regions of the image that could potentially contain the target. A cursory analysis of every region can be computationa...

Validation of GPS receiver instrumental bias results for precise navigation

The positional accuracy of Global Positioning System (GPS) is affected by several errors, the most predominant error being the ionospheric delay. This delay is proportional to the total electron content (TEC). The dual frequency GPS observables can be used to estimate the TEC. The line-of-sight TEC estimated from dual frequency GPS data is corrupted by the instrumental biases of the GPS satelli...

Challenges of Real-Time Monitoring of Ionospheric Perturbations and TEC Fluctuations with GPS Single Station

Jellyfish stings on Langkawi Island, Malaysia.

INTRODUCTION Jellyfish stings are the most frequently reported marine animal envenomation worldwide. However, data on jellyfish sting from Malaysia remains obscure due to inadequate research. METHODS We investigated the epidemiology, clinical features and treatment of patients presenting at the emergency department of Langkawi Hospital between January 2012 and December 2014. Secondary data on...

Real-Time Interference Detection in Tracking Loop of GPS Receiver

Global Positioning System (GPS) spoofing could pose a major threat for GPS navigation ‎systems, so the GPS users have to gain a better understanding of the broader implications of ‎GPS.‎ In this paper, a plenary anti-spoofing approach based on correlation is proposed to distinguish spoofing effects. The suggested ‎method can be easily implemented in tracking loop of GPS receiver...