查询词典 spectral

The spectral characteristics of the vegetation canopy, including four dominant vegetation types, Leucaena leucocephala, Vitex negundo, Acacia confuse and Pandanus odoratissimus, were measured from November 2006 to October 2007 using a ground handheld spectroradiometer in the Kenting National Park of Taiwan.

本研究以垦丁国家公园为研究区，调查期间为200611月至200710月，用地面手持光谱仪，测植群冠层之光谱特徵，包含区域内之银合欢、黄荆、相思树与投等4种优势植群。

MIMO, on the other hand, is capable of creating an individual parallel channel for the transfer of multiple data streams while at the same time increasing spectral efficiency without any need for more bandwidth.

而MIMO技术能够在空间中产生独立的并行信道同时传输多路数据流，在不增加系统带宽的情况下增加频谱效率，有效地提高了系统的传输速率。

In contrast with the Lax representation for soliton equation, there are singu-larities related to spectral parameter in the Lax representation for soliton equationwith self-consistent sources.

与孤立子方程的Lax表示相比，带附加项的孤立子方程的Lax表示中含有谱参数的极点。

The multilevel partitioner of MVP achieves the better partitioning of weighted undirected graph by introducing the graph core during the coarsening phase,the spectral graph theory during the initial partitioning phase and swarm intelligence during the refinement phase.

MVP系统的多水平剖分程序引入图核到粗化阶段，谱图论到初始剖分阶段，群智能到投影优化阶段，得到了无向赋权图更优的剖分。

An algorithm that performs velocity measurement with partial GPS signals based on Periodogram Spectral Analysis method was proposed.

考虑在瞬时信号情况下GPS的测速问题，针对片段信号的特点提出了基于经典谱估计方法测量载体速度的方法。

With this method,carrier Doppler was firstly estimated with Periodogram Spectral Analysis method;then LOS Doppler velocity was calculated;and finally,the velocity of the receiver was compu...

首先应用周期图法估计片段GPS信号的多普勒频移，计算视距变化率，然后建立视距变化率方程，进而求得接收机的速度。通过Matlab模拟的信号和GPS仿真器模拟产生的高动态信号仿真验证了多普勒频移的估计精度和用户速度的测量精度。

The effect of CIT on sea state and target detection is analyzed and it is pointed out that with the existing system modern high-resolution spectral estimation methods must be used in place of the traditional periodogram.

分析了线性调频雷达的抗噪声及干扰能力，研究了距离域噪声的相关函数与其时域输入噪声的相关函数的关系，得出带宽越大相关距离越小的结论，并指出线性调频波形产生的系统处理增益为其时宽-带宽积。

Among so many synthesis methods for FGN, there are the spectrum-based approaches, spectral simulation and Paxson method, which features and the relation between are explored in this paper. Morever the spectrum-based estimation for hurst exponent, periodogram, is researched.

在众多的合成分形高斯噪声的方法中，研究了基于功率谱的FGN的生成算法，谱模拟方法和Paxson方法的特点以及联系，同时对基于功率谱的Hurst指数的估计方法，周期图法进行了讨论。

Nonnegative Matrices ; Spectral ; Perron Root ; Estimation ; Algorithm ; Application

吉林大学；吕洪斌非负矩阵；谱； Perron根；估计；算法；应用

A ghostly face at the window a phantasmal presence in the room spectral emanations spiritual tappings at a seance .

窗户上一张幽灵似的脸；房间里幽灵的存在；幽灵；降神会上的膜拜。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。