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The Contract of Objectives (CoO), which is based on Target Windows (TWs), constitutes a new concept of operations for Air Traffic Management. TWs are represented by 4-D windows to be respected during the flight execution. They are negotiated and formally agreed by all the different actors involved in the execution of a flight and are located at the transfer of responsibility areas between them. This paper focuses on the TW modelling process which is at the base of the operational assessment carried on in the framework of the CATS project to investigate the impact of this concept on Air Traffic Controllers and pilots' working methods. In particular in this paper we focus on the TW model which has been developed for the first Human In the Loop (HIL) experiment, a real time simulation carried on to assess the impact of the concept on air traffic controllers working methods. A different work by CATS project elaborates instead on the specific indicators measured during this experiment, regarding both system performances and human performances observed during the HIL.

This letter is concerned with imaging a 3-D scene from a set of 2-D laser images of backscattered intensity without prior knowledge. The interaction between an electromagnetic wave and a medium can be understood and modeled in different ways. In the configuration considered here, the interactions result in a 3-D projection of the scene. After inspection in the measured signal, the reflection data appear as a sum of point spread functions with or without angular limitations. The approach proposed here consists thus in considering reflection data as an incomplete data set of Radon kind used in conventional computerized tomography. Under this approximation, reconstruction techniques, such as the well-known filtered back projection or the Feldkamp algorithm, can be exploited. The advantage of this approach is to provide isosurfacic reconstructions of the scene from reflective data performed with real-time computation times and without prior information. Simulation results on a real laser tomographic data set attest of the strength and of the relevancy of the proposed method.