⑴ 高分求一段汉译英，用软件直接翻译的勿扰。
With the development of science and technology, now in many areas of need to know the exact direction of useful signal, the frequency of parameters, the precise measurement of the signal to put a very high demand. Spectrum space technology in many areas has been widely used, and array signal processing plays a very important role.
Often, the signal space is measured up to one direction Wei Boda (DOA) estimates. In practical applications, often at the same time to signal the number of parameters of the estimates, such as signal DOA, pitch angle and frequency. This paper first introced for the two-dimensional space spectrum of the estimated MUSIC algorithm, ESPRIT algorithm for the basic idea and principle of algorithm, and then focus on the two algorithms based on the position - two-dimensional frequency spectrum estimation. Then this paper were used MATLAB language MUSIC algorithm and ESRPIT algorithm estimated two-dimensional and computer simulation results are analyzed and compared.
This paper first introced the concept of radio frequency identification technology, the rise and development. Radio frequency identification system with the basic structure and principles, described the antenna transceiver and the working principle of the process. Subsequent analysis of the transmitting power, receive power chip, chip power consumption and receiving antennas to receive the echo of the relationship between power and to examine in detail the chip to receive power and receiving antennas to receive the echo power as a range of changes, as well as the decision The size of these power factors, the actual design of radio frequency identification hardware to provide reference data
参考
⑵ 请问MUSIC算法和LMS算法到底是怎么回事,都是用来干吗的啊
这是两种不同的算法,MUSIC算法是多重信号分类算法,是经典的空间谱估计算法,通过将接受信号分成噪声子空间和信号子空间(这两子空间正交)达到超分辨谱估计.MUSIC算法可以完成DOA(波达方向)估计和频率估计.其实质是基于一维搜索的噪声子空间算法.
LMS算法是最小均方算法，是自适应技术的基础．LMS算法是达到输入信号与期望信号有最小的均方误差的一种算法．
⑶ 波束形成和music有什么关系
为了提高频域波束形成的宽带波达方向估计性能,提出了类MUSIC波束形成算法(MBM,MUSIC-likeBeamforming Method).在频域将宽带信号划分为若干窄带信号,叠加各窄带的MBM算法的空间谱后其峰值对应角度即为宽带波达方向估计结果.MBM算法的主瓣宽度在不同分析频率下基本保持不变,计算量与常规波束形成(CBF,Con-ventional Beamforming)相当.仿真结果表明,MBM算法的宽带波达方向估计性能和角度分辨能力介于分别叠加各窄带的CBF和MUSIC算法估计结果的ICBF(Incoherent CBF)和IMUSIC(Incoherent MUSIC)算法之间.
⑷ 问一个信号中MUSIC算法的问题：
随机信号的功率谱，描述了信号的功率在频域的分布情况。
如果是实功率谱，那么它应该完整描述了功率所分布的频率范围，以及在不同频率处的功率的相对强度。
而MUSIC作为一种高分辨率的子空间方法，首先其主要应用于离散谱的估计，比如混叠在一起的单频信号；其频谱峰值反映了这些主要信号成分所在的频率位置，但是其并不能反映各信号成分之间的幅度比值（相对强度），也反映不出信噪比水平，所以MUSIC算法所得到的“谱”被称为伪谱。