All digital flight program training desktop application system operating conditions are simple. Can make the aircraft aircrew learning theory and operation training closely. Improve the training efficiency and effectiveness. This paper studies the application field and design requirements of flight program training system. Based on the WINDOWS operating system desktop application, the design idea and system architecture of the all digital flight program training system are put forward. Flight characteristics, key airborne systems and aircraft cockpit are simulated. Finally, By comparing flight training simulator and the specific script program training system, The characteristics and advantages of the training system are analyzed in this paper.
Speech signal is the most important part of the GSM mobile communication, thus the speech coding technology and high efficiency digital modulation technology can provide a higher system capacity for digital mobile networks than analog mobile network.Most of the implementation of speech code-decode is mainly in DSP platform, but this paper presents three low rate speech coding schemes provided in the 3GPP protocol and the way to implement them in VC platform. We describe a compressed method to greatly reduce the size of the coded audio files. In addition, we can play decoded audio files in VC++ in real-time. It is impossible to play audio files in the DSP platform. So our method in VC platform is better than the method in DSP platform.
Speech signal can be effect by the external interruption in the process of flight simulation, which results in the deteriorated speech processing performance in flight simulation system. To solve the problem, speech enhancement module has been developed using the spectral subtraction algorithm based on the flight simulation system developed by the research team. The module will improve the recognition rates and provide advanced anti-jam capabilities for the speech processing performance of the flight simulation system. The feasibility and validity of this speech enhancement module is validated by processing the interrupted speech signal. The work in this paper has laid foundation for the application of the speech enhancement technology in flight simulation system.
RTLAB is a new simulation tool in the research fields of distributed power and micro-grid simulation. The simulation speed is essential to the research efficiency. In order to improve the simulation speed of the RTLAB, research on the simulation data uploading process has been studied in this paper. Using the FTP data uploading functions to achieve the lower computer data was succeeded. By comparing the experimental results, it shows that the speed is significantly upgraded by using FTP data transmission method to upload the data.
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