Research on GPS Receiver Autonomous Interference Detection GPS接收机自主干扰检测方法研究
It includes four basic elements: user interface, GPS signal simulator ( intermediate frequency, IF), civilian ( C/ A) software receiver and interference generator. 该平台包括四个部分:用户界面、GPS信号仿真器、GPS软件接收机以及干扰信号发生器。
Implementation of Cross-Correlation Interference Mitigation Algorithm for GNSS Receiver intrasystem interference GNSS接收机的消除互相关干扰算法及其实现系统之间的相互干扰
For interference and multipath channels, the adaptive receiver achieves optimal detection by interference suppression and multipath combination. 当存在干扰和多径时,自适应接收机能够抑制干扰,合并多径,从而实现对发送信号的最佳检测。
Having adopted the signal simulation and automatic test technique, we can test "burn-through" range of radar and output SNR of receiver under different jamming or interference, and can judge decline of radar fighting performance. 应用信号仿真技术和自动测量技术,测量雷达系统在不同干扰强度下的自卫距离和接收系统的输出信噪比,能够衡量干扰条件下防空监视雷达作战能力的下降程度。
In order to suppress the multipath interference in the CDMA system, an improved Rake receiver based on parallel multipath interference cancellation technique ( PMPIC) is proposed in this paper. 为了消除CDMA系统中的多径干扰,提出了一种改进的并行多径干扰抵消Rake接收机算法。
This paper gives detailed instructions about the characteristics of some common clutters in radar echo signal processing, including rain, snow, ocean waves, inner noise in receiver, interference of the same frequency and so on. 本文详细介绍了在雷达回波信号处理中几种常见杂波的特性,包括雨雪、海浪、接收机内部噪声、同频干扰等;
In receiver, a successive interference cancellation ( SIC) receiver was proposed, which has a lower computer complexity comparing to ML. 在接收端,我们提出一种比特连续干扰抵消(SIC)检测算法,这种算法相比最大似然算法大大降低了运算复杂度。
The Performance Analysis of a Receiver with Combing Multistage Parallel Interference Cancellation and Antenna Array 一种将天线阵列与并行干扰抵消算法相结合的接收机
A Realizable Blind Adaptive Receiver for Multi-Access Interference Suppression 一种可实现的盲自适应多址干扰抑制接收机
The established model of receiver intermodulation interference is suitable for computer-aided spectrum management of the land-mobile services and potential interference analysis of the land-mobile communications engineering. 设定的接收机互调干扰模型适用于陆地移动业务机助频谱管理和陆地移动通信工程的潜在干扰分析。
The solution evaluate the performance of GPS receiver with/ without Narrowband Interference Suppressor. The result shows the Narrow Interference Suppressor can mitigate narrow interference to GPS. 该方案评估了GPS接收机在加入抗窄带干扰数字处理技术后的性能,结果表明:对单元天线接收机来说,频域窄带干扰抑制技术能较好起到抗窄带干扰作用。
The model of receiver intermodulation interference among the duplex mobile communication systems 双工移动通信系统的接收机互调干扰模型
In MIMO communication system the conventional iterative receiver based on soft interference cancellation and MMSE filtering is sensitive to the channel correlation. 针对MIMO(多输入多输出)通信系统中传统的基于软干扰消除和MMSE(最少均方误差)滤波器的迭代接收方案对信道相关性较敏感的问题。
Based on the experiment of the interference of existing UWB signal to the GPS receiver, the potential interference of the UWB pulses with different pulse repetition frequency to the GPS is analysed. 结合已有的超宽带(UWB)信号对全球定位系统(GPS)接收机的干扰实验,分析了不同脉冲重复频率(PRF)的超宽带脉冲信号对全球定位系统的潜在干扰。
Low-complexity iterative receiver based on hybrid interference cancellation in MIMO system MIMO系统中基于混合干扰消除的低复杂度迭代接收
The disturbing mechanism of injected electromagnetic interference in immunity testing of color TV receiver and the method of interference suppression is analyzed and a solution for improving immunity in the de-sign of color TV receiver is presented. 分析了彩电抗扰度测试中注入电磁骚扰信号的干扰机理及抑制干扰的方法,提出了一个在彩电设计中提高抗扰度的解决方案。
Based on the analysis of carrier receiver limited amplitude interference, provide a way of circuit modification. 通过对载波接收机限幅干扰分析,提出电路改进的办法。
Secondly for DSSS receiver, the interference is first exactly located in proper sub-band by tree structured algorithm ( TSA)-based adaptive wavelet packet transform ( AWPT), then the interference is excised using wavelet packet domain adaptive LMS algorithm. 其次针对DSSS接收机,采用基于树结构算法(TSA)的自适应小波包变换精确定位窄带干扰所在子带,利用小波包域自适应LMS算法抑制干扰。
Since the network is not cram-full, the sender sends a RTS with a maximum power to make sure that the signal strength is high enough to maintain the SINR level at the receiver in case of interference; the protocol used is thus locally aware. 由于网络节点较为稀疏,发送端发送一个具有最大功率的RTS请求发送帧,以确保信号强度高到足以维持在干扰的情况下接收端的SINR信噪比级别。因此该协议叫做局部感知。
Therefore, the study program of assistive technology to improve anti-jamming navigation receiver interference performance becomes necessary. 因此,研究抗干扰辅助技术方案来提高接收机抗干扰性能显得很有必要。
In the presence of Bluetooth interference, analyze the signal models of Bluetooth and WLAN, choose suitable signal models and parameters of channel models. Present the system method of adaptive filtering with Rake receiver to overcome the interference of Bluetooth, this method is simple and effective. 在存在蓝牙干扰的情况下,分析蓝牙和WLAN的信号模型,选取合适的信号模型及信道模型参数,提出采用自适应滤波加上Rake接收技术的系统方法来克服蓝牙的干扰,这种方法简单有效。
Built the mathematical model and Matlab simulation model of array signals for the anti-jamming navigation receiver in the strong interference environment. 2. 本文的核心工作和创新点主要体现在以下几个方面:1.建立了强干扰环境下基于天线阵的抗干扰导航接收机接收信号的数学模型和基于Matlab的仿真模型。
Because the high frequency components of signals is attenuated seriously, after passed the transmission line. This will make the rise and fall time of signals longer at receiver, resulting in inter-symbol interference and high bit error rate. 均衡器是本文设计的核心,因为信号经过传输线之后,高频分量衰减比较严重,使得接收端收到的信号上升/下降时间变长,极易引起码间干扰,导致误码率升高。
In this scheme, the transmitted signals from different base stations are processed to be non-overlapping in the autocorrelation domain by different pre-filters at the transmitter. At the receiver, the inter-cell interference can be eliminated by designing appropriate autocorrelation matching filters. 该方法首先在发送端,通过采用不同的预滤波器,使得来自不同基站的发送信号在自相关域内互不重叠;在接收端,通过设计合适的自相关匹配滤波器消除来自邻小区的干扰。
In order to get the original source signal, an equalizer has to be used in the receiver to eliminate inter-symbol interference and compensate non-ideal characteristic of the channel. 为了得到原有的信源信号,需要在接收端增加一个均衡器来消除码间干扰,补偿信道的非理想特性。
If the carrier is not synchronous, the system will generate intercarrier interference; and if the timing is not synchronous, system will generate symbol interference; the asynchronous of sampling frequency in receiver will make symbol interference and carrier interference. 如若载波不同步,系统会产生载波间干扰;定时不同步,系统会产生符号间的干扰;接收端采样频率的不同步,会使系统产生符合干扰和载波干扰等。
This paper focus on the following CFO compensation receivers: single user detector, Post-DFT processing receiver, interference cancellation receiver and the interleaved multiuser signal structure-based minimum mean square error ( MMSE) detector. 本文重点研究了以下四种基于补偿的接收机:单用户检测器、Post-DFT处理接收机、干扰删除接收机和基于交织多用户信号结构的MMSE检测器。
In the navigation terminal system, the introduction of iterative processing technique with receiver, iterative processing technique enhance the navigation receiver interference rejection performance, high-precision navigation receiver to improve navigation performance. 在导航接收机系统中合理引入迭代处理技术,应用迭代处理技术,加强了导航接收机干扰抑制性能,提高导航接收机高精确导航性能。
The environment of complex wireless electromagnetic and non-purpose navigation receiver signal interference would bring about adverse effects of the satellite navigation terminal, and in some cases, an anti-jamming technology interference rejection performance is not ideal. 现实环境中卫星导航终端设备应用的复杂无线电磁环境,非目的信号的干扰会给导航接收机的终端带来恶劣的影响,且已有的抗干扰技术在一些情况下干扰抑制性能不理想。