link n. 1.环链环。 2.(编织物的)链圈。 3.(链状物中的)一节(多节香肠等的)一节单节小香肠。 4.承前启后的人[物];环节,联系。 5.【机械工程】连杆,滑环,链节。 6.【化学】键,键合;【计算机】链接,衔接。 7.(测量用长度单位)令〔 = 7.92英寸〕。 8.〔pl.〕 (衬衫袖口的)链扣 ( = cuff links). 9.【无线电】通讯线路;网络节;固定接线。 10.【电学】熔丝。 11.〔pl.〕〔方言〕河道弯曲处。 draw link 牵引连杆。 drive link 传动杆。 all-round links, radio relay link 无线电中继线路。 One link broken, the whole chain is broken. 〔谚语〕一环断,全链断。 The chain is no stronger than its weakest link. = The strength of a chain is its weakest link. 〔谚语〕一环软弱,全链不强。 the missing link 短缺的环节;全部推论[材料]中还不能衔接之处;设想存在于人类与类人猿之间的过渡生物;联系;环接;握(手),搭(手臂)。 vi. 连结;联合。 vt. 【计算机】链接,衔接。 link up with 和…同盟,和…提携;结亲。 n. 火把,火炬。
The periodic function is separated into the digital quantity . it has the high stability signal sweep frequency using the phase - lock link to carry on to the digital quantity reading , through d / a transformation , the appropriate filter may obtain the high stability signal output 摘要将周期函数离散成为分离的数字量,利用锁相环产生高稳定度的信号扫描频率对数字量进行读取,经过d / a变换及恰当的滤波可以获得高稳定度的信号输出。
Then we uses the scheme that has the variable gain based on the kalman filtering model realize two steps phase - locks ring circuit track technology , this kind has the advantage that when changed the gain the digital phase - lock link to be allowed simultaneously to realize the fast capture and the reliable track , the simulation analyzes its capture performance 仿真结果表明,自编码直扩通信系统的编码捕获性能具有可行性。采用基于卡尔曼滤波模型实现具有可变增益的二阶锁相环路的跟踪技术,这种具有时变增益的数字锁相环可以同时实现快速捕获和可靠跟踪,其捕获性能要比传统数字锁相环改善很多。