Development of the GPS Simulator for Driving Simulators

Cooperative D-GNSS Aided with Multi Attribute Decision Making Module: A Rigorous Comparative Analysis

“…By means of the C-DGNSS positioning framework, the participating vehicles in the neighborhood share PVT-related data with the target vehicles employing low-cost receivers. The NMEA 0183 messaging protocol is an international data format intended for communication between electronic devices similar to the ASCII character standard for computer programming [1,14]. The NMEA messages are plain sentences with specific serial data fields that can be read by a common digital notepad and are composed of ASCII strings that convey useful location-based information.…”

“…The NMEA messages are plain sentences with specific serial data fields that can be read by a common digital notepad and are composed of ASCII strings that convey useful location-based information. A summary of the basic positioning metrics along with the corresponding NMEA messages is reported below [1,14]:  Geographic latitude, longitude, and altitude ($GNGNS);  Number of GNSS satellites in view ($GNGNS);  Horizontal and vertical dilution of precision ($GNGNS);  Horizontal and vertical accuracy standard deviations ($GNGST);  Quality of the location (integrity, validity, and integer ambiguity status) ($GNGFA).…”

“…The main hypothesis is that the target vehicle's low-cost receiver could improve both its relative and absolute positioning accuracy. The GNSS PVT information is comprised of National Marine Electronics Association (NMEA) messages, and the target vehicle parses the incoming NMEA sentences in a serial manner [14]. With the aid of a multi-attribute decision-making (MADM) module, the target vehicle optimally decides in real-time which neighbors to select for retrieving the GNSS corrections for improving/updating its own PVT state.…”