跪求td中复合码的计算方法

问题已开启 普通问题 提问者:阿菜|提问时间:2010-08-16
众位大哥:兄弟看过的资料上都一笔带过说:复合码由扩频码与扰码逐元素向乘得到,可是小弟怎么乘也得不到与给出的复合码一样的结果,所以小弟在此向各位大哥跪求复合码的计算方法!

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呵呵,研究的够深呀zcv54K:JFD本文来自移动通信网www.mscbsc.com,版权所有
回答者:yangh 回答时间:2010-08-16 22:59
In the design of the cryogenic system and superconducting magnets for a poloidal field system in a tokamak fusion reactor, it is important to have an accurate estimate of the heat produced in the superconducting magnets as a result of the rapidly changing magnetic fields. Until recently, this estimate was obtained by assuming that the field and the time rate of change of the field were constant throughout the coil windings. A more accurate method of estimation involves integrating the losses over the coil windings, thus taking into account the spatial variation of the magnetic field. A computer code, PLASS (Pulsed Losses in Axisymmetric Superconducting Solenoids), has been written to perform this integration. PLASS has been used to analyze the present design for the poloidal coil system of the ORNL Experimental Power Reactor (EPR). This design requires that superconductor hysteresis losses, superconductor coupling losses, stabilizing material eddy current losses, and structural material eddy current losses be taken into consideration in the calculation of conductor losses. A tabulation of individual losses vs variations in superconductor characteristics and coil current changes is presented to demonstrate the parameters which significantly affect the design. Results indicate that the total energy released into the cryogenic system is less than one-half of that predicted by the previously oversimplified calculation.
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回答者:libaoya2010 回答时间:2010-08-17 14:03
先看看给出的复合码是十进制还是十六进制,还是其他进制,看看是不是这个问题
回答者:sickhumour 回答时间:2010-08-31 09:20

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