• FLIGHT SIMULATION WITH DYNAMIC AERONAUTICAL CHANNEL MODEL

      Alam, Tasmeer; Moazzami, Farzad; Dean, Richard; Morgan State University, Department of Electrical and Computer Engineering (International Foundation for Telemetering, 2018-11)
      This paper includes the design, modeling and analysis of the aeronautical channel which includes the dynamics of flight simulation. For any given flight path scenario in the cruise state it is well understood that the channel is fitted by a 2 ray model. The dynamics of this model can be generated using the two-ray ground reflection model which is based on the position, velocity, and direction of the aircraft. The dynamic aeronautical channel model includes Doppler shift and delay spread for each path of a channel model. This paper shows how each parameter is created for modelling the dynamic channel. The design of such channel model will help the telemetry community to incorporate channel dynamics in computer simulation to improve the accuracy of flight simulation in the design and pre-test stages. Further, it can provide insight to the selection of modulation, equalization and coding for such channels.
    • LINK DEPENDENT ADAAPTIVE RADIO PERFORMANCE ON DYNAMIC CHANNEL

      Alam, Tasmeer; Moazzami, Farzad; Dean, Richard; Morgan State University, Engineering (International Foundation for Telemetering, 2018-11)
      This paper includes analysis of aeronautical channel dynamics in flight simulations of the Link Dependent Adaptive Radio (LDAR). LDAR system includes realistic measurement of the throughput gain with the adaptation of the modulation and coding parameters for telemetry applications. To increase the accuracy, channel dynamics have been incorporated in the simulation. Dynamic channel simulator is developed by the customized two ray ground reflection channel model including Doppler shift, delay spread, and other channel dynamics. This paper shows the comparison of the performance of LDAR using both static and dynamic channel. The impact of creating accurate simulation results with this dynamic channel simulator reaches beyond LDAR and will help the telemetry community to improve the accuracy of computer simulation in the design and pre-test stages.