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Experimental characterization of the antenna for the Wideband Instrument for Snow Measurement (WISM) under development for the NASA Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP), is discussed. A current sheet antenna, consisting of a small, 6×6 element, dual-linear polarized array with integrated beamformer, feeds an offset parabolic reflector, enabling WISM operation over...
In many applications, such as Eddy-Current Testing (ECT), we are often interested in the joint model choice and parameter estimation. Nested Sampling (NS) is one of the possible methods. The key step that reflects the efficiency of the NS algorithm is how to get samples with hard constraint on the likelihood value. This contribution is based on the classical idea where the new sample is drawn within...
Studies on the TREC system (Time-Reversal Electromagnetic Chamber) demonstrated its ability to generate coherent wave fronts in a reverberation chamber [1]. Though originally motivated for EMC tests [1], the generation of coherent wavefronts within a reverberating cavity has also a potential interest in antenna testing. In this paper, we present a preliminary 2D simulation aiming at testing a new...
High performance PM motors must be designed with a consideration of the capabilities of the voltage source inverters that will control them. Both motor and drive are operating at the limits of their capabilities and require accurate estimation of expected performance and losses to enable a successful design. The effect of rotor design choices on VSI performance is shown via the modification of the...
This paper introduces the standardization work on C2P (Connection Control Protocol), carried on in the frame of ETSI SES BSM working group. As a first step, this work has defined a C2P solution for dynamic connectivity and QoS control in all types of DVB-RCS satellite networks.
In this paper, a new formulation is proposed for the design of an impedance controller for an industrial robot. This model takes into account the complete kinematics of the system and the position response of the industrial robot controller. The proposed formulation is used to design and implement an impedance controller on a KUKA robot interacting with the environment having two different stiffness...
In this paper, a new formulation is proposed for the design of a force controller for an industrial robot. The model takes into account the complete kinematics of the system and the position response of the industrial robot controller. The proposed formulation is used to design and implement a PI controller on a KUKA robot for two different stiffness environments. Good results are obtained by using...
Age-appropriate authentic engineering problems offer educators opportunities to integrate math, science, and technology and foster higher-level learning. However, P-12 teachers typically do not have adequate access to or knowledge about engineering, which limits their ability to bring engineering into their classrooms. This study was conducted to document and analyze P-6 teachers' perceptions of engineering...
Advantech believes that the combined use of DVB-S2 and DVB-RCS technologies, plus complementary technologies such as Ka band satellites, can produce a very low cost broadband delivery platform for both broadcast and interactive services. A return channel is rapidly becoming mandatory to serve both the needs of the content provider and to enable delivery optimisations (such as adaptive coding and modulation)...
In the framework of the inverse scattering methodologies, this paper is aimed at preliminarily assessing the integration between the Iterative Multi-Scaling Approach and the Level-Set-based method. In order to enhance the potentialities of the Level-Set-based minimization, a multi-resolution procedure is employed for allowing a finer discretization only in those regions of interest where the scatterers...
This paper presents the development cycle of complex real-time applications. The paper demonstrates how the different steps involved in the creation of complex control system are achieved in a cost effective way using state of the art development tools involving an open-source real-time operating system. Starting at model creation, ending at results analysis, the different aspect of development is...
Advantech believes that the combined use of DVB-S2 and DVB-RCS technologies, plus complementary technologies such as Ka band satellites, can produce a very low cost broadband delivery platform for both broadcast and interactive services. A return channel is rapidly becoming mandatory to serve both the needs of the content provider and to enable delivery optimisations (such as adaptive coding and modulation)...
High quality InP and GaInAs have been grown by MOMBE. 77K mobilities of 57000cm2/Vs for InP and 50000cm2/Vs for GaInAs were obtained. We have prepared GaInAs/InP multi single quantum well structure showing sharp photoluminescence peaks with linewidths as low as 7 meV for 1.7nm well. We have also studied selective epitaxy on different shapes of mesas and performed the planarization of a RIE etched...
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