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laplace
Laplace可以应用于图像的锐化，根据其原理，对于Laplace后的图像同样可以进行边缘检测。(Laplace can be applied to image sharpening. According to its principle, edge detection can also be performed for images after Laplace.)
- 2020-07-15 18:28:50下载
- 积分：1
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一种数字中频 GPS 信号生成方法 GPS generation
研究了一种数字中频 GPS 信号生成方法。给出了数字中频信号数学模型，模型考虑了各种因素对信号的影响。通过导航电文分析，提出信号传播时延、多普勒频移以及信号入射方向的估计方法。给出了中频信号产生的流程，对其中时延的设置，信号的上变频、信号幅度设置以及方向信息的导入进行了阐述。对所生成的信号模型进行了仿真分析，给出了信号产生各个阶段的频谱，对所生成的信号进行了相关捕获。仿真结果表明频谱特征符合理论分析，能够被捕获并找出信号时延从而实现定位。证明该信号模型能作为信号源应用于 GPS接收机研制中。(】The paper discusses a digital IF GPS signal generation method, gives the mathematic
model of digital IF signal. This mathematic model takes into account the influence of various
factors. Based on analysis of the navigation data, the method to estimate signal propagation time,
Doppler frequency shift and the coming angle of signal is proposed. The flow to generate IF signal
is given, in which the setting of time delay, the up-frequency conversion, the setting of signal
magnitude and the introduction of direction information are expounded. The signal generation model
is simulated and analyzed, the spectrum of signal in each stage given, and the correlation capture
of the generated signal also done. Simulation indicates that the spectrum is in accord with
theoretical analysis the signal could be captured, thus find the time delay, accomplish the
orientation. The signal model is proved applicable in the research and development of GPS receiver.)
- 2013-05-15 11:44:16下载
- 积分：1
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M序列?¨
生成一个M伪随机序列码，在ISE平台上可跑通(Generate an M Pseudo-Random Sequence Code which runs on ISE platform)
- 2019-05-05 15:54:38下载
- 积分：1
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code-of-GNSS-sofe-receiver
本书面向应用与编程设计、在参考国内外论著的基础上，结合作者自己的研究成果撰写。内容上由浅人深，第一章介绍了GNSS软件接收机的研究背景和各种卫星导航系统。第二章介绍了信号处理的一些相关概念。第三章介绍了卫星运动的基本理论。第四章研究GNSS信号，包括伪随机码信号、导航电文，着重以GPS和Galileo系统为例进行讨论。第五章研究了GNSS接收机的前端技术，包括天线和信号下变频原理。第六章探讨卫星信号的捕获技术。第七章讨论卫星信号的跟踪、解调和伪距计算。第八章探讨导航定位解算方法。第九章简要介绍了GNSS干扰和抗干扰技术。第十章为实用编程实践。
本书结合最新的有关研究成果，以便读者能参考本书获得较全面的知识。当然，也不可能面面俱到，读者在阅读本书时，需要有数字信号处理、自动控制以及卫星导航的相关知识。给出了Matlab源程序以及c++源程序，可帮助相关研究人员加快研究进度。(Book oriented programming and application design, in reference to domestic and international works on the basis of research results, combined with the author s own writing. Content from the shallow people deep, the first chapter introduces the research background of GNSS software receiver and satellite navigation system. The second chapter introduces some related concepts of signal processing. The third chapter introduces the basic theory of satellite motion. The fourth chapter studies of GNSS signaling, including pseudo random code signal, the navigation message, focused on the GPS and Galileo system as an example to discuss. The fifth chapter studies the GNSS receiver front end technology, including an antenna and a signal conversion principle. The sixth chapter discusses the satellite signal acquisition technology. The seventh chapter discusses the satellite signal tracking, demodulation and pseudo distance calculation. The eighth chapter discusses the navigation positioning solutio)
- 2012-11-20 09:33:21下载
- 积分：1
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project_zy
超声波测距程序 适用传感器HC-SR04(The application of sensor HC-SR04 for ultrasonic range finder)
- 2017-12-25 18:05:12下载
- 积分：1
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GPSCAFFT
GPS信号中C/A码的傅里叶变换，matlab程序(GPS signal C/A code of the Fourier transform, matlab program)
- 2013-10-09 11:37:13下载
- 积分：1
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Visual-navigation-procedures
视觉导航程序
主要用GPS和MIU单元并用KF和UKF进行数据融合(Visual navigation procedures)
- 2011-04-29 15:27:05下载
- 积分：1
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OFDM-system-FPGA-design
说明： OFDM基带处理的书籍和论文，以及发送和接收端源码。(OFDM baseband processing books and papers, as well as send and receive source code.)
- 2020-06-06 13:54:22下载
- 积分：1
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AD7895
读取AD7895 的12位ADC转换值，连续读取方式，采样速率为20mS 一次。(Read the 12 bit ADC conversion value of AD7895.)
- 2018-10-20 12:34:24下载
- 积分：1
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GSMPlus01
GSM GPRS GSMPlus 01 Hong Hai
- 2013-03-27 16:03:19下载
- 积分：1
