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Published in Philip A. Laplante, Comprehensive Dictionary of Electrical Engineering, 2018
critically sampled critically sampled quency. sampling at the Nyquist frephysically adjacent to it or near it in terms of its radio frequency. cross polar discrimination the ratio of copolar to cross-polar received field strengths in a depolarizing medium. Usually expressed in decibels. cross polar isolation the ratio between the field received by an antenna with one polarization from co-polar and cross-polar transmissions. This expresses the receiver's ability to detect one signal when dual-polarized signals are transmitted through a depolarizing medium. cross power spectrum for two jointly wide sense stationary random processes the Fourier transform of their cross-correlation. cross spectra computation of the energy in the frequency distribution of two different electrical signals. cross-assembler a computer program that translates assembly language into machine code for a target machine different from the one on which the cross-assembler runs. cross-compiler a computer program that translates a source code into machine or assembly code for a target machine different from the one on which the cross-compiler runs. cross-correlation a measure of the correlation or similarity of two signals. For random processes x(t) and y(t), the cross-correlation is given by: Rx y (t1 , t2 ) = E x(t1 )y(t2 ). See wide sense stationary. cross-correlation function a function describing the degree of similarity between two signals, as a function of time-shift between the signals. See also correlation function. cross-field theory a conceptual way to envision the operation of a single-phase induction motor.
Cross-Platform Development
Published in Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu, A Comprehensive Guide to Enterprise Mobility, 2016
Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu
Figure 8.3 shows the implementation using a mobile platform cross-compiler. In this technique, the application development is done in a common abstraction language, and cross-compilers are used to port the application to different platforms. This approach leads to reduced implementation effort and costs, as more component level reuse is involved. When changes are made in the base or in the abstract implementation, it is easier to fix bugs and propagate changes. The results of the compilation from the abstract implementation to a specific platform will usually have errors, and these need to be fixed manually.
A proof-of-concept field experiment on cooperative lane change maneuvers using a prototype connected automated vehicle testing platform
Published in Journal of Intelligent Transportation Systems, 2021
Kelli Raboy, Jiaqi Ma, Edward Leslie, Fang Zhou
Simulink is a graphical programing tool developed by MathWorks that acts as a companion to their MATLAB computation software. Simulink’s visual nature enables rapid prototyping of algorithms or logic while making it easy to visualize relationships between functions and data flow. Simulink acts as the framework for much of the software running on the MAB, both the control algorithm and various vehicle interfaces. In cases where using Simulink alone would have made specific software components challenging to create, the research team implemented the logic in standard C code and integrated that code directly with the rest of the Simulink code. The Simulink Coder toolbox was used to compile the Simulink model down to C code before using a cross-compiler to create the binary that could run on the MAB.