Finally, we propose a new 2-d DOAs estimation method for coherent narrowband signals.

最后，提出了一种新的相干信号下的有效联合参数估计方法。

In this paper, we use DOAS method to measure the spectra of benzene and toluene sample and analyze the results.

文中用DOAS方法测量了苯和甲苯的样品，并分析了结果，结果和理论吻合。

This method of checking accuracy of the DOAS system was discussed and it can provide the reference to the fraternity.

本文针对DOAS系统准确度检查方法进行实验探讨，期望能提供给同行参考。

A special four order cumulant was defined to extract DOAs and Doppler frequencies from additive Gaussian colored noise.

最后通过定义一个特殊的四阶累积量提取加性高斯有色噪声中的方向角、多普勒频率。

It is easy to expend our method to estimate the two dimensions (2d) DOAs of spatial signals. The numerical results s...

本文所述方法，很容易直接推广于二维阵列情况进行空间信号二维到达角的无模糊估计。

In this paper, an improved method is proposed to estimate source DOAs in the presence of the spatially nonuniform noise.

文中提出一种空间非均匀噪声环境下的信号源DOA估计的改进方法。

It is known that a good performance can be obtained when the DOAs are estimated directly from the signal direction vectors.

由信号方向向量直接估计到达波方向(DOA)可以获得优良的估计性能。

Differential optical absorption spectroscopy (DOAS) has become a widely used method to measure trace gases in the atmosphere.

差分光学吸收光谱法(DOAS)已经成为测量大气中微量气体浓度广泛应用的方法。

In general, it is a good idea to doas much work as possible as an ordinary user who does not have the power--and risk--ofroot.

一般的，尽可能多的作为普通用户(不拥有高权限)进行工作是一个很好的做法，使用root用户工作具有危险性。

The authenticated Subject can be stored in this SubjectHolder immediately following authentication and before calling the doAs method.

认证的Subject可以在认证之后和调用doAs方法之前存储在这个SubjectHolder中。

With the method of differential optical absorption spectroscopy(DOAS), aerosol along the light path is measured with a flashlight source.

介绍了一种基于闪烁氙灯光源、利用差分光谱吸收（DOAS）技术监测大气气溶胶的新方法。

Based on the unique decomposition of signal eigenvectors, we use one or more signal eigenvectors to estimate DOAs by an iterative algorithm.

基于信号特征向量分解的一种唯一形式，我们提出了用递推算法来实现由一个或几个信号特征向量进行DOA估计。

Simulation results prove that, if the error is compensated by using the new method, signal DOAs can be accurately estimated using MUSIC algorithm.

计算机模拟结果表明，采用该方法完成误差校正后，用MUSIC算法能实现对信号DOA较为准确的估计。

Application of DOAS is based on some prior conditions that can't be directly derived from theory. These prior conditions are validated by the experiment.

差分吸收光谱法的应用假定了一些理论上无法直接推导的条件，通过实验验证了这些前提条件的正确性。

With combination of the above subspace tracking algorithm with SVD- ESPRIT algorithm, an adaptive ESPRIT algorithm is presented to track the time varying DOAs.

将该跟踪算法与SVD -esprit算法相结合，得到的自适应esprit算法可用于对时变的信号DOA进行跟踪估计。

Through estimating the signal and noise subspaces with the eigen-decomposition of the correlation matrix, the MUSIC algorithm is used to estimate the DOAs of LFM sources.

通过对相关矩阵进行特征值分解，估计信号子空间和噪声子空间，并利用MU S IC算法估计宽带LF M信号的波达方向。

Aiming at the applications in engineering, the principles of subspace algorithms about the DOAs estimating and tracking are discussed comprehensively in this dissertation.

论文从实际应用的角度出发，全面论述了子空间类多目标方位估计和跟踪算法的理论和方法。

The results indicate that this optical remote sensing method based on passive DOAS is an effective means of rapidly determining the distribution of city gaseous pollutant.

实验结果表明车载DOAS的光学遥测方法为城市污染气体分布快速测量提供了一种有效的手段。

The application server provides a helper class, WSSubject, which has static doAs() and doAsPrivileged() methods with identical signatures as the Subject class. The WSSubject.doAs()

该应用服务器提供了一个帮助器类 WSSubject ，它有 static doAs() 和 doAsPrivileged() 方法，它们具有相同的 Subject 类签名。

Nonlinear absorption occurs when the differential optical absorption spectroscopy (DOAS) is used to monitor the flue gas with high SO2 concentration from fixed pollution source.

差分光学吸收光谱法(DOAS)应用于固定污染源烟气排放监测时，烟气中污染气体so2浓度较高将产生非线性吸收问题。

With the method of differential optical absorption spectroscopy (DOAS), aerosol along the light path is monitored and its size distribution is measured with double optical path method.

介绍了利用双光路差分吸收光谱(DOAS)技术监测大气气溶胶并反演其粒谱分布的新方法。

Differential optical absorption spectroscopy (DOAS) makes use of the flue gas pollutant different optical absorption characteristic at the UV-VIS wave band to measure their average concentration.

差分吸收光谱法是利用气体污染物在UV - VIS波段对光有不同的吸收特性来测量其平均浓度。

DOAS is a new skill in the remote sensing of air. It has advantage in non-compare with the other methods. It makes up the limitations of usual supervision methods during the expressway construction.

光谱遥感监测是大气环境污染监测领域的一项高新技术，具有其他方法不可比拟的优点，它弥补了常规监测方法在高速公路建设期中对大气污染监测的局限性。