Air or Ground Engineer?

WCDMA for Air to Ground and Ground to Air communications – Case Study for Greek airspace

In this paper the capacity of the Air-to-Ground and Ground to Air system is studied. The Outside Cell Interference Factor is estimated through simulations for uplink and downlink. The calculation algorithm is explained as well as the scanning mode of interfering cells around the desired cell. Results for the number of active users for various values of the maximum height of the cell and its rad...

Radiation exposure during air and ground transportation.

Experimental acoustic ground cloak in air.

We present the design, fabrication, and performance analysis for a class of two-dimensional acoustic cloaking coatings in air. Our approach takes advantage of transformation acoustics and linear coordinate transformations that result in shells which are homogeneous, broadband, and compact. The required material parameters are highly anisotropic; however, we show that they are easily achievable ...

Issues in Cooperative Air/Ground Robotic Systems

The possibility to jointly deploy aerial and ground robots makes sense in many application contexts of field robotics. There are indeed several cooperation schemes in which the complementarity of such heterogeneous robots can be exploited to enhance the efficiency of autonomous robotic operations. This paper analyses the problems raised by the cooperation of ground and aerial robots. Besides th...

Air-to-ground Integrated Fuzzy Guidance System

In this paper we consider the problem of air to ground missile guidance system using fuzzy controller. The missile model is assumed as three degree of freedom (3DOF) (assuming the analysis in the vertical plane only).The homing guidance method is used. This paper presents numerical results for applying the fuzzy controller to the missile in different situations of control parameters in differen...