| 1. | The main studied topic of spatial spectrum estimation is the direction of arrival ( doa ) of spatial signals
空间谱估计的研究主题是在处理带宽内空间信号的到达方向( doa ， directionofarrival ) 。 |
| 2. | An algorithm for the moving emitter passive location and tracking based on toa and doa measurements by a single fixed station is given
提出了一种测量目标辐射源脉冲到达时间和到达方向实现固定单站对运动辐射源进行无源定位的算法。 |
| 3. | An algorithm for the moving emitter passive location and tracking based on toa and doa measurements by a single fixed station is given
本文提出了一种测量目标辐射源脉冲到达时间和到达方向实现固定单站对运动辐射源进行无源定位的算法。 |
| 4. | Digital signal processing technologies were used to produce spatial and directional beam in adaptive antenna . then the main beam aims at the coming direction of desired signal and the side lobe points to the coming direction of interference signals
自适应天线利用数字信号处理技术，产生空间定向波束，使天线主波束对准期望信号到达方向，旁瓣或零陷对准干扰信号到达方向。 |
| 5. | Digital signal processing technologies were used to produce spatial and directional beam in smart antennas . then the main beam aims at the coming direction of reference user and the side lobe points to the coming direction of interference user
智能天线是利用数字信号处理技术，产生空间定向波束，使天线主波束对准期望用户信号到达方向，旁瓣或零陷对准干扰信号到达方向，达到充分高效利用移动用户信号并删除或抑制干扰信号的目的。 |
| 6. | The music ( multiple signal classification ) algorithm , presented by doctor r . o . schmidt in 1979 , is the most classical super - resolution algorithm . on the condition of exact model of antenna array , the music algorithm can estimate the doa of uncorrelated signals accurately
最经典的超分辨空间谱估计方法是schmidt博士在1979年提出的music ( multiplesignalclassification )算法，在模型准确的前提下，该算法能精确地估计出空间互不相关信号的到达方向( doa ) 。 |
| 7. | Usually dual sources ( radar and decoy ) have the same or alike modulation and position . in this dissertation , method of doa identification is studied in order to tracking individual radiation source correctly . the main efforts and results of this dissertation can be summarized as follows : 1
本文重点研究在两点源(雷达和诱饵)空间张角很小、时域重叠、信号调制参数相同或相近的情况下， prs有效分选辐射源到达方向( directionofarrivals ，即doa )的方法，以实现对待攻击辐射源的正确跟踪。 |
| 8. | Based on the configure of direction finding , the location method , algorithm , accuracy and performance for multistations and single station are studied in this thesis , and the computer simulation results are given out . it is important of resolving the performance of antenna array . a technique to estimate and calibrate the performance is developed in this page
本文以测向系统的组成为基础，研究了单平台情况下利用到达方向、到达时间差、多普勒频率差、相位变化率等参数的测向方法、测向算法、测向精度和性能，并进行了计算机仿真，为无源测向系统的设计和实施提供了重要的理论基础和实验数据。 |
| 9. | Cellular wireless location service is a new mobile value - added service with a good market future . its basic principle is to implement mobile user location through estimating charactistics parameters relative to position , including time - of - arrival , time - difference - of - arrival , direction - of - arrival , ect
蜂窝无线定位服务（ lcs ）是一种具有广阔市场前景的移动增值业务，其基本原理是利用现有蜂窝网络，通过对各种位置特征参数,包括到达时间( toa ) 、到达时间差( tdoa ) 、到达方向( doa )的测量和估计，从而实现移动用户的定位。 |
| 10. | Based on fourth - order cumulant , a computationally efficient method for joint estimating both directions of arrival and ranges of near field sources with known carrier frequency is firstly presented . the proposed algorithm need not any spectral peak searching and the 2 - d parameters are automatically paired . lt is suitable for arbitrary additive gaussian noise environment . in the following section , a 3 - d esprit method for jointly estimating of frequencies , doa ' s and ranges of multiple near - field sources with unknown carrier frequencies is proposed . the parameters estimation are given by the eigenvalues of different matrices . furthermore , its performances are confirmed by several computer simulations
利用四阶累积量，第五章首先给出了一种载频已知的情况下基于近场源的距离和波达方向联合估计算法，通过构造的阵列输出信号四阶累量矩阵使空间信号到达方向和距离估计无需谱峰搜索，且参数自动配对，适合于任意高斯噪声环境。进一步在第三节提出了一种载频未知的情况下的多个近场窄带信号源doa 、距离和频率联合估计的3 - desprit算法。 |
