The main achievements include: 1. Taking advantage of the time diversity theory, some low complexity multiuser detectors are proposed.

For improving the detecting accuracy of leakage positions on pipeline with SPRT, a new method based on time diversity was proposed.

分析了传统压力梯度法的不足，借鉴负压波定位中的时间差法定位泄漏点，提高了定位的精度。

Moreover the combined performance of frequency diversity and time diversity can be gained by using time-frequency RAKE receiver.

接收端使用时频RAKE接收机，可以使系统具有频偏分集和时延分集的性能。

The common diversity be classified as space diversity, polarization diversity, frequency diversity, and time diversity etc.

通常的分集有空间分集、极化分集、频率分集、时间分集等，本文对分集研究技术的研究主要是空间分集和极化分集在数字域的实现等。

On above basis, the system gets extra extra time diversity gain with code combining at the destination.

在此基础上，接收端进行码合并，进一步为系统带来了额外的时间分集增益。

In this letter, time diversity is demonstrated as a technique which can decrease turbulence influence.

采用分集技术可以有效改善空间自由光通信的通信质量。

It can explore the spatial diversity gain and time diversity between the antennas.

它能够挖掘天线间的空间分集、时间分集。

Time-varying channel can provide time diversity, also known as the Doppler diversity.

时变信道可以提供时间分集，也称为多普勒分集。

Applying time diversity to overcome fast fading for OFDM system

在OFDM系统中应用时间分集对抗快衰落

Modified OFDM System Which Can Increase Time Diversity

改进的增加时间分集的OFDM系统

Combining with zero sequence current with inverse time characteristics, grounding distance relay is used in earth protection for 220 kV and above lines, instead of phase zero sequence current protection.

在220kV及以上电压等级线路用接地距离保护代替阶段式零序电流保护，并辅之以具有反时限特性的零序电流作为接地保护。

People feel that time and distance

人们感觉时间和距离

Data Mining Based on Segmented Time Warping Distance in Time Series Database

基于分段时间弯曲距离的时间序列挖掘

The Unequal Time& Distance Grey Model of Energy Consumption and its Application

能耗的不等时距灰色模型及其应用

Perhaps this is time and distance of product.

也许这就是时间和距离的产物。

Do we wanna know the time or distance in this problem?

这问题我们要知道时间还是距离？

It's so real in time and distance.

时间和距离如此真实。

Time and distance have given me a different perspective.

时间和距离让我拥有了不同的视角。

Seismic wavelet, which is optimally matched with the seismic traces in the vicinity of wells, was defined in course of determination of accurate time distance curves from synthetic seismograms, based on sonic and density data after environmental correction.

从声波时差、密度资料的环境校正入手，利用合成地震记录求取准确的时间深度关系，获得与井旁地震资料最佳匹配的非零相位实际地震子波；

Secondly, combining practical survey method and time-resistance mathematic model, the author obtained average time distance from every time-cell to fictitious time center, isotime curve figure ( by Arc view 3D analyze) and temporal shape.

然后利用实际测量法和理论公式法计算出深圳特区各时间单元的平均时间距离，并用Arc view中的3D分析模块自动生成等时线图。

In 2D seismic data processing, the traditional DMO flow is still continuously used at present, that is, the time distance curve equation of common midpoint gather is adopted yet for the velocity analysis of common reflection point gather.

当前在二维地震资料处理过程中，DMO处理仍然沿用传统的做法，即在获得共反射点道集后，仍采用共中心点道集的时距曲线方程进行速度分析。