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With the rapid development of satellite navigation systems, BOC (Binary Offset Carrier) is one of the most critical and most common modulation mode and will become the mainstream in the Satellite navigation signal modulation. Through the mechanism of the BOC signal, it mentioned a method named Square Frequency Doubling Method to detect carrier frequency of BOC modulation signal. The subcarrier frequency...
According to the computing formula of floating double leading shoe drum brake damping factor, brake torque and vehicle equivalent inertia, taking BJ1029A lorry front brake for example, carry out theoretical calculation. Around the simulation design and structural optimization of the drum brake, explored the combination application of ADAMS software and ANSYS software to set up rigid-flexible coupling...
The rutile TiO2, La/rutile TiO2 and Y/rutile TiO2 were synthesized by one-step method, and the densities of states were investigated by ab initio method. Firstly, the result of ab initio calculation showed that the band gap of La/rutile TiO2 is less than that of Y/rutile TiO2 and rutile TiO2, and the crystal lattice energy of rare earths (La, Y)/rutile TiO2 are similar to each other. Secondly, the...
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