ranging code

Currently most satellite navigation systems utilize the spread spectrum communication technology to transmit navigation information, and the commonly-used PRN ranging code is the balanced Gold code.

目前的卫星导航定位系统大多采用扩频通信技术来传输导航信息，常用的伪随机码是平衡Gold码。

Secondly, it introduces the frequency selection, EMC ( Electromagnetic Compatibility), the basic generation theory and modulation of the third civil signal ( L5 signal), including LS ranging code, Forward Error Correction, QPSK modulation and Neuman.

其次，介绍了其信号的频段选择、电磁兼容性及其调制和产生的基本原理，包括L5测距码、卷积码、QPSK调制以及Neuman。

Otherwise, the target code can be anything expressible in the Java language, ranging from self-contained microbenchmarks to code that calls a full application.

除此之外，目标代码可以是能够用Java语言表达的任何代码，包括自我包含的微基准测试和调用整个应用程序的代码等等。

In order to determine relative positions between satellites and the attitudes of satellite of formation constellation, like-GPS carrier phase was added in based on former study of states determination combining with carrier phase differential GPS ( CDGPS) and like-GPS ranging code.

为了确定编队星座的星间相对位置和卫星姿态，在原有联合GPS差分和类GPS伪距进行状态确定的研究基础上，进一步加入了类GPS载波差分信息。

Finally, by comparing the selected ranging-codes with GPS C/ A codes on the assignable code number and auto-and cross-correlation features, the advantage of the selected ranging-codes and the feasibility of the algorithm can be illustrated preliminarily.

通过对比分析优选测距码与GPS C/A码的可分配码数量、自相关及互相关函数特性，初步说明优选测距码的优越性及其优选算法的可行性。

The Deep Space 3 is a proposed mission by NASA within the New Millennium Program. This paper primarily studies the relative state parameters autonomous determination of three satellites formation of the Deep Space 3 using inter-satellite relative measurements of like-GPS carrier phase and a ranging code onboard.

以NASA新千年计划中的深空计划3为背景，使用星载类GPS的伪距和载波观测数据，研究利用编队卫星间相对测量，高精度自主确定三星编队星座相对状态的有关问题；

Research on Space Pseudo Code Ranging Based on AOS Recommendation

基于AOS建议的伪码测距研究

According to actual needs, the thesis identifies specific parameters of code system and select JPL rapid capture based on m-m composite sequences as ranging code signals of the system.

根据实际需要论证了码制的具体参数，选择了基于m-m复合序列生成的JPL快捕码作为系统的测距码信号。

A design of spread spectrum and ranging code in radio measurement and its control system are given in the paper.

本文给出了无线电测控系统中扩频和测距编码的设计方法。

A Study on the PRN Ranging Code of Satellite Navigation Systems

卫星导航定位系统中伪随机码的研究