差分gps的主要目的是什么？
指出了差分公式法的局限性。
本文研究了中立型差分方程。
采用有限差分方法，对波动方程求数值解。
We use finite difference method to solve electromagnetic wave equation.
初值问题的时间积分经常采用差分近似。
Time integration of an initial value problem USES the finite difference scheme quite often.
本文以差分跳频通信系统的实现为目的。
In this paper, the implementation of DFH system receiver is target.
利用三维变分差分方法研究薄壳的动力分析。
The three dimensional variational difference method was applied to dynamic analysis of thin shells.
本文阐述了差分技术的应用和系统精度分析。
The differential technology and system accuracy analysis are described in this paper.
方法差分方程理论。
介绍一种新的差分gps方法，既位置差分法。
文中研究对IDEA的一个差分错误分析方法。
A differential fault analysis of IDEA based on temporary and random bit faults is studied.
研究和设计了一实验性双端差分吸收激光雷达系统。
An experimental laser radar system with double end differential absorption is studied and designed.
提出了采用反馈控制方法求解隐式差分方程的方法。
Feedback control method is used to solve implicit difference equation in this paper.
采用两点回收、差分还原的途径实现林分结构的预测。
The prediction can be made by the two-point recovery and difference restoration.
结论该非线性差分方程模型具有良好的可靠性和稳定性。
CONCLUSION Model of nonlinear difference equation has the advantage of reliability and stability.
在差分gps系统的应用中，基准站的精确定位是一个重要问题。
It is important to locate the base station in DifferentialGPS system precisely.
对逆向伪距差分算法的实现做了详细介绍并对实验结果做了简要分析。
Describe the realizing of IDGPS in details and make a brief analysis of the result.
在传统的差分算法基础上，提出了一种新的背景的建立和更新的解决方法。
Based on the traditional difference algorithm, a new background construction and updating method is proposed.
该模型的数学形式是一个非线性二阶常微分方程，利用有限差分方法进行求解。
The mathematical expression of this model is a second order non linear ordinary difference equation.
对现有模板进行改进，提出一种生长模板来对差分图像中的目标点和噪声点进行检测。
A growth template that can detect the target and noise pixel was put forward.
差四分六点。
6点差20分时，我在车站入口处等着。
At twenty to six I was waiting by the entrance to the station.
我们七点差五分吃早饭。
现在是七点差五分。
显然这里存在了巨大的分差。
简：现在是差十分钟到五点吗？
简：现在是差十分钟到五点吗？
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