Today, more and more digital electronic devices are used to improve aircraft's operational performance. It presents a problem that increasing number of avionics components leads to more system failure and more uns...
详细信息
ISBN:
(纸本)9781467386616
Today, more and more digital electronic devices are used to improve aircraft's operational performance. It presents a problem that increasing number of avionics components leads to more system failure and more unscheduled maintenance. For this problem we research an enhanced reconfiguration method about the future Integrated Modular Avionics (IMA). And present a simulation that indicated the method can resume the system's original state after a failure occurs, enable the plane fly with fault, avoid unscheduled maintenance, and then save the operation expense of airline.
Since the security problem of embedded systems are increasingly severe and the transfer of trusted chain is incomplete, a bottom-up and top-down transfer model of the trusted chain of embedded systems is presented in ...
详细信息
Since the security problem of embedded systems are increasingly severe and the transfer of trusted chain is incomplete, a bottom-up and top-down transfer model of the trusted chain of embedded systems is presented in the paper, combining with the idea of trusted computing. Based on this model, the plan for booting trust, loading trust on real-time operating system and on applications with the prototype of partitioned RTOS on embedded system platform is designed, which can well solve to a certain extent the security problems that the current embedded system encountering.
The quality and visual effect of an image is high demanded in avionic embedded field. But the frog and haze is common in the nature environment, so foggy images gathered in bad weather need to be disposed to remove th...
The quality and visual effect of an image is high demanded in avionic embedded field. But the frog and haze is common in the nature environment, so foggy images gathered in bad weather need to be disposed to remove the haze. The single image haze removal algorithm using dark channel prior can achieve great haze removal effect, but the process of optimizing the medium transmission in this algorithm costs too much time, while the computational complexity is too high to be real-time operating for high resolution image. In this paper, a novel method is proposed which uses a new kind of filter called guided filter to optimize the medium transmission. This method is much faster and also can achieve good haze removal effect. In addition, the method uses down sampling and interpolation method to transform a high resolution image into a low one to reduce the quantity of calculation. At last, we implement the novel algorithm on a multi-core DSP of TI company. The experimental results show that the method costs less than 40ms for a 600*400 resolution image and can satisfy the demand of real-time image process.
Typical aerospace embedded computers have many characters in common, especially in the aspect of the design of computer architecture. To evaluate this category of computers, 3 typical aerospace embedded computers were...
详细信息
Typical aerospace embedded computers have many characters in common, especially in the aspect of the design of computer architecture. To evaluate this category of computers, 3 typical aerospace embedded computers were sampled and their characters of architecture and common technology were analyzed. Eight characters of architecture were concluded, and three evaluation dimensions were proposed. A basic guideline and a practical reference value or design were attached to each architecture character. The relationship was analyzed among the final assessment result, the evaluation dimensions and the architecture characters. Any aerospace embedded computer can be scored according to the assessment model for various estimate requirements. The evaluating method and progress were illustrated through one kind of advanced aerospace embedded computer's evaluation case. The case indicates that the assessment model is clear, effective and practical. It can provide some guidance for the design and performance analysis of aerospace embedded computers.
暂无评论