Gravity modeling and application to the gravity referenced navigation

Performance Evaluation and Requirements Assessment for Gravity Gradient Referenced Navigation

In this study, simulation tests for gravity gradient referenced navigation (GGRN) are conducted to verify the effects of various factors such as database (DB) and sensor errors, flight altitude, DB resolution, initial errors, and measurement update rates on the navigation performance. Based on the simulation results, requirements for GGRN are established for position determination with certain ...

Gravity Model: An Application to Trade between Iran and Regional Blocs

The Gravity Model and Iran's Trade Flows

This article has considered the volume and direction of Iran’s trade using the gravity model. The major issue in this analysis is to explore why Iran over or under-traded with the 76 countries relative to the predicted trade flows of the model. The study attempts to explore the reasons from the respect of both the model itself and Iran’s trade structure. This is done by analysing the performanc...

Gravity-Referenced Attitude Display for Teleoperation of Mobile Robots

Attitude control refers to controlling the pitch and roll of a mobile robot. As environments grow more complex and cues to a robot’s pose sparser it becomes easy for a teleoperator using an egocentric (camera) display to lose situational awareness. Reported difficulties with teleoperated robots frequently involve rollovers and sometimes even failure to realize that a robot has rolled over. Atti...

Trade Potential And Among Indian Ocean Border Countries: Application Of The Gravity Model