signal n. 1.信号,暗号;信号器。 2.动机,导火线 (for)。 3.预兆,征象。 call signal 【无线电】呼号。 an alarm signal 警报(器)。 an information signal 〔美国〕暴风警报(旗)。 an international code of signals 国际通用信号。 a signal of distress =a distress signal 船只失事信号。 adj. 1.暗号的,作信号用的。 2.显著的,非常的,优越的。 a signal victory [defeat] 大胜[败]。 vt.,vi. (〔英国〕 -ll-) 发信号[警报]给(人、船等);用信号[警报]通知(暴风、危险等);用动作[手势]示意;预示。 a signaling bomb 信号弹。
These signal formats are converted to match the number of pixels of the panel . small text may not be displayed properly 为配合屏幕的像素,这些讯号模式会被转化,以致细小文字可能无法清晰显示。
The catv charge and control system has excellent compatibility with other signals and no astriction in signal format , so you doesn ` t need to worry about its future . the system involves many technical fields , including controls of computer 、 communication 、 high frequency of electric circuits , and now it serves for more than 1 , 000 , 000 customers 该系统涉及多个研究领域,包括计算机控制、通信、高频电子电路等多个领域的知识,涉及用户多达60万户。
This chip integrates the algorithms of coding and decoding in chip , which can accurately control the compression rate and compress many video signal formats , including pal and ntsc . on the other hand , it can also obtain excellent image quality and high compression rate . in this paper , we make the best use of adv6oilc fulfill the remote multimedia surveillance , which provides many advantages in implementing such system 该专用压缩解压缩芯片系列片内集成了编解码算法,具有精确的压缩比特率控制,能实时对包括pal和ntsc在内的多种视频信号进行压缩和解压缩,同时由于采用小波变换进行图像编解码,能保证获得很高的压缩率和图像质量。
In the part of platform designing , proper peripheral chips are chosen according to the audio signal format . and how to achieve channel synchronization in the receiving part is an important aspect of wireless transmission system . in order to solve this problem , three algorithms are used ; those are scramble / descramble , improved over - sampling , and frame synchronization protocol 在硬件验证平台的设计部分,文章根据音频信号的特点选择了适当的外围芯片,并且针对无线传输接收端的同步问题,采用了三种算法来减少失步现象,即扰码/解扰算法,改进型的过采样算法,以及帧同步协议。
The signal format of gps is analyzed , the principle models and mathematical models are established , the ber performance is analyzed in a channel interfered with wide - bandwidth awgn , narrow - bandwidth awgn , transmitted signal , single - tone signal respectively . based on the results above interference methods are discussed and simulated . then the performance of code acquisition and code trace of a digital gps receiver are discussed . the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn , single - tone signal and multi - tone signal respectively 建立了jtids的收发终端的数学模型,分析它在噪声干扰、相关干扰、互相关干扰下的误码性能,提出较佳的干扰方法和干扰码型,并进行仿真模拟;分析了gps的信号格式,建立了gps的原理框图模型、信号数学模型,并对其在宽带噪声干扰、窄带噪声干扰、转发干扰、单频干扰等情形下的误码性能进行了分析比较,提出相对较佳的干扰方法,并做了计算机模拟,针对一数字式gps接收机中扩频码捕获与跟踪环的特性进行分析;建立了link11和link4a数据链调制解调数学模型,对它们在噪声干扰、单音干扰、多音干扰等下的误码性能进行分析,最后对干扰情况进行了仿真模拟。
The dissertation tries to eliminate these affection in details : far - near field problem can be relieved by changing the pesudolite ' s signal format and increasing the dynamic range of receivers ; dual - satellite ' s dual directions timing technology and atomic tinier are contributions to enhance synchronization , the constraints of the layout and location of pesudolite stations , such as gdop , proof - interfere etc . , are also focused in 从伪卫星信号格式和接收机动态范围出发改进了远近场问题的影响。研究了伪卫星与卫星精确时间同步。通过对gdop 、卫星间及与用户接收机的共视性、抗干扰性等几个约束条件的分析,对伪卫星基站进行了合理选址和优化布局。