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This paper establishes the index system of the safety evaluation of navigation environment from perspective of which affects the navigation safety. After that, Bayesian network security evaluation method is introduced and the fuzzy set theory is combined to construct a safety state evaluation model. Then the safety condition of the navigation environment is expressed in the form of safety probability.
The signals of Galileo system were assigned by navigation systems panel (NSP). Some detailed characteristic of RF signals was civil aviation. But it needed some easy way to select out from the other signals such as GPS signal. So BOC modulation was recommend to the Galileo system. The key element of BOC was the PRN which was a stochastic and orthogonal signal. The Ushiki-Map chaos sequence was used...
Safety producing behavior of construction enterprises is the main step and measure to prevent and control the accidents, and has been in a continuous improvement process. This paper, proposes three stages for the improvement of the safety producing behavior of construction enterprises, systematic studies the external environment and internal economic momentum to improve the safety producing behavior,...
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