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码产生器
相关语句
  code generator
     IRIG-B (DC) Clock Code Generator in GPS Timing
     用GPS校时的IRIG-B(DC)时间码产生器设计
短句来源
     The system mainly consisted of the PN code generator, the SS implement, the absolute-to-relative code converter, the digital sine wave signal generator, 2DPSK modulator and D/A converter.
     电力线数字扩频通信系统的发送部分从结构上看,主要由PN码产生器、扩频器、码变换器、数字正弦波信号发生器、2DPSK调制器以及D/A转换器等几个模块组成。
短句来源
     The parts of IRIG-B code time system equipments presented in this thesis are as follows: 1. IRIG-B code generator; 2. 1KHz sine wave signal digital synthesizer;
     本文所述的IRIG-B码时统设备由以下部分组成:1. IRIG-B码产生器:2. 1KHz正弦波信号数字综合器;
短句来源
     The shortcomings of the original B time code generator are complex circuit and low reliability.
     以往的B码产生器存在电路复杂,可靠性低的不足。
     FPGA has been used as a design method in the simulation of C/A code generator in high dynamic GPS. C/A code plays an important part in realising code division,coarse acquisition of satellite signal and acquisition of precise code(p code) with HOW(Handover Word).
     采用了FPGA方法来模拟高动态(G loba l Pos ition System GPS)信号源中的C/A码产生器
短句来源
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  “码产生器”译为未确定词的双语例句
     Pseudo-Random Codes with the Longest Period
     最长周期伪随机码产生器的研究
短句来源
     A Generator of Inter-range Time Code with CPLD
     用CPLD实现的靶场时码产生器
     The DMI encoder encodes the pseudo random code received and outputs the DMI code at the clock rate of 64kHz. So it provides a DMI code.
     采用伪随机码产生器在32 kHz时钟频率作用下发生伪随机码(PN码),使DM I编码器将接收到的伪随机码进行编码,并在64 kHz时钟频率作用下输出DM I码。
短句来源
     The Development and Application of High Performance Time-code Generator
     高性能时码产生器
短句来源
     Anti-jammimg Technique using Software and Application to Time-code Generator
     软件抗干扰技术在时码产生器中的应用
短句来源
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  相似匹配句对
     The Development and Application of High Performance Time-code Generator
     高性能时产生器
短句来源
     Design of Time Signal Generator for IRIG-B Node
     IRIG-B的时间信号产生器设计
短句来源
     m-Ary Gray Codes
     m元格雷
短句来源
     Optical Orthogonal Codes
     光正交
短句来源
     MOVING PULSE GENERATOR
     滑移脉冲产生器
短句来源
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  code generator
These components consist of a code generator for a simple high-level language, an assembler and linking loader, a simple operating system kernel, and a microprocessor design.
      
We describe the specification, implementation and proof of correctness of a code generator for a subset of Gypsy 2.05.
      
The code generator is specified in the Boyer-Moore logic; its proof is fully machine-checked using the Kaufmann-enhanced Boyer-Moore theorem prover.
      
Our code generator sits atop a 'stack' of verified system components providing a prototype development environment for constructing highly reliable application Programs.
      
Time-code generator and event marker for correlating chart and magnetic tape records
      
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This Paper discusses a Scheme of error code rate measuring instrument. In the scheme, the “Pouring code” model frame synchronization is used.

本方案中采用灌码群同步方式,以矩阵的概念描述M序列码产生器的状态流程,它比一般以时间推算具有概括性.本文介绍了采用灌码群同步方式的原理性方框图,计算出获得群同步的统计平均时间,结果表明它较之一般采用特殊码组同步方式的捕捉时间短.此外还介绍了位同步锁相环的主要参数.实验表明,本方案是可行的.

The radar signal design and signal processing are investigated comprehensively to obtain the optimum statistical pulse compression characteristics (SPCC). First, the SPCC of a code set with L codes is studied that is obtained by truncating a cyclic PN code in a fixed step length with the truncated length L being equal to the code length of the cyclic PN code and transmitted in turn to implement the code agile in pulse-to-pulse (CAPP). The general expressions of SPCC for the kind of codes mentioned above are...

The radar signal design and signal processing are investigated comprehensively to obtain the optimum statistical pulse compression characteristics (SPCC). First, the SPCC of a code set with L codes is studied that is obtained by truncating a cyclic PN code in a fixed step length with the truncated length L being equal to the code length of the cyclic PN code and transmitted in turn to implement the code agile in pulse-to-pulse (CAPP). The general expressions of SPCC for the kind of codes mentioned above are derived. The peak ratio of main-lobe to side-lobe (RMS) of SPCC within the pulse repetition period (PRP), refered to as RMS in the near region, is greater than L, but is very small outside the PRP which is refered to as RMS in the far region. Next, in order to improve the RMS of SPCC in the far region for the code set mentioned above, a code set truncated from a cyclic PN code in a stochastic step length is proposed with the truncated length L. Although these agile codes have a good RMS of SPCC in the far region compared with previous one, however, the agile fashions in this manner are very few than that in a fixed step length. Finally, a new kind of pulse-to-pulse agile codes (NKPPAC) and their SPCC are investigated by means of the computer simulation. The RMS in the near region for the NKPPAC is the same with that one the truncated PN code set had given, and in the far region is also greater than L except a very few code sets with particular code length L in the particular agile step length. Even so in the last case the difference of RMS of SPCC in the far region from L is also very small. If the code length L is sufficiently large, the high RMS of SPCC required can be achieved without weighted processing. This will lead to simplify the hardware for engineering implementation. It is proved by the hardware experiment that the generators of this NKPPAC are very simple, which is expected for engineering applications.

通过对雷达信号设计和信号处理的综合研究,导出了关于固定步长截断PN码集脉间码捷变信号的统计脉压特性通用表达式,提出了一种随机步长截断PN码集脉间码捷变信号。前者的近区主副瓣比优于码长L,但其跨周期远区主副瓣比很小。后者的统计脉压特性之跨周期主副瓣比优于前者,但仍然不够理想。针对这两者的缺陷而提出的一类新型脉间码捷变信号,其近区主副瓣比优于码长L,跨周期远区主副瓣比除极个别码长下的个别捷变步长外,也优于L,只要信号的码长足够长,不用加权处理即可得到所需的主副瓣比,而且其码产生器极易实现。

The agile phase-coded pulse compression is a new technique in radar signal processing domain. This paper is devoted to the theoretical and experimental investigations of main problems in realization of this technique. A method for constructing sub-optimal code sets is proposed to improve the pulse compression performance by combining phase agility and video integration after pulse compression. The compositions, working processes and performance analyses of the agile code generator, digital correlator and digital...

The agile phase-coded pulse compression is a new technique in radar signal processing domain. This paper is devoted to the theoretical and experimental investigations of main problems in realization of this technique. A method for constructing sub-optimal code sets is proposed to improve the pulse compression performance by combining phase agility and video integration after pulse compression. The compositions, working processes and performance analyses of the agile code generator, digital correlator and digital integrator are also given. It concluded with computer simulations and hardware real-time experiments been completed.

捷变相位编码脉冲压缩技术是一项新的雷达信号处理技术。本文从理论与实验两方面就实现捷变相位编码脉冲压缩的几个主要问题进行了讨论。首先,作者提出了准最佳码集的构造方法。同时从理论上分析了采用捷变与压缩后积累相结合的信号处理方法对脉压性能的改善。其次,给出捷变码产生器、数字相关器及数字积累器的组成与工作过程、性能指标等。另外,作者还进行了计算机仿真及硬件实时处理方面的工作与实验。进一步验证了理论分析结果。

 
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