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Description: 西安电子科技大学数字通信课件，包括信道编码，扩频通信，同步，通信网等内容，希望对大家有用-Xi an University of Electronic Science and Technology of digital communications software, including channel coding, spread spectrum communications, synchronization, communication networks, etc., in the hope that useful
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Size: 9691136 |
Author: 海之 |
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Description: 雷达信号处理中，杂波抑制的MTD算法源程序
扩频调制中的DDS实现算法，直接序列扩频算法
信号处理分析中的chirp generate LFM signal算法-Radar signal processing, clutter suppression algorithm MTD source of spread spectrum modulation in the DDS algorithm, direct sequence spread spectrum signal processing algorithm for the analysis of the chirp generate LFM signal algorithm
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Size: 5120 |
Author: 冯小刚 |
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Description: 使用维纳分布进行瞬时频率估计用来校正电离层非线性相位污染带来的频带展宽-High-frequency (HF) sky-wave radar
signals propagate to and from the target by means
of the ionosphere. The difficulty in obtaining very
narrow beamwidths at HF, and the long ranges
involved, mean that the signal backscattered from
the ground is often several orders of magnitude
greater than the target echo. To resolve the target,
coherent signal processing techniques are necessary,
detecting the target echo by virtue of the
Doppler shift caused by the target’s radial velocity.
Unfortunately, movement of the ionospheric
layer by which the radar signal has propagated
often causes the clutter spectrum and target to
spread in the frequency domain, rendering
extended coherent integration pointless. The
movement of the ionosphere can be regarded as
producing frequency modulation of the radar
signal, and thus if this modulation can be estimated
the radar signal may be corrected for the ionospheric
contamination. A technique using the
complex argument of the first-order mo
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Size: 615424 |
Author: sunrong |
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Description: 基于超声波检测的倒车雷达设计
其原理为:在超声波发射器两端输入10个40kHz脉冲串，脉冲电信号经过超声波内部振子，振荡出机械波，通过空气，介质传播到被测面，由被测面反射，超声波接收器接收-Based on ultrasonic testing of reversing radar design The principle is: In the ultrasonic transmitter at both ends of input 10 40kHz pulse train, pulse ultrasonic signals through the internal oscillator, a mechanical wave oscillation, through the air, medium spread to the measured surface from the measured surface reflection, ultrasonic receiver to receive
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Size: 53248 |
Author: kinng |
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Description: 基于超声波检测的倒车雷达设计
其原理为:在超声波发射器两端输入10个40kHz脉冲串，脉冲电信号经过超声波内部振子，振荡出机械波，通过空气，介质传播到被测面，由被测面反射，超声波接收器接收-Based on ultrasonic testing of reversing radar design The principle is: In the ultrasonic transmitter at both ends of input 10 40kHz pulse train, pulse ultrasonic signals through the internal oscillator, a mechanical wave oscillation, through the air, medium spread to the measured surface from the measured surface reflection, ultrasonic receiver to receive
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Size: 53248 |
Author: kinng |
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Description: 基于超声波检测的倒车雷达设计
其原理为:在超声波发射器两端输入10个40kHz脉冲串，脉冲电信号经过超声波内部振子，振荡出机械波，通过空气，介质传播到被测面，由被测面反射，超声波接收器接收-Based on ultrasonic testing of reversing radar design The principle is: In the ultrasonic transmitter at both ends of input 10 40kHz pulse train, pulse ultrasonic signals through the internal oscillator, a mechanical wave oscillation, through the air, medium spread to the measured surface from the measured surface reflection, ultrasonic receiver to receive
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Size: 480256 |
Author: kinng |
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Description: 雷达信号处理中，杂波抑制的MTD算法源程序扩频调制中的DDS实现算法，直接序列列扩频算法信号处理分析中的chirp generate LFM signal算法
-Radar signal processing, the MTD of clutter suppression algorithm source code spread spectrum modulation in the DDS algorithm, the direct sequence of columns in the spread spectrum algorithm for signal processing and analysis chirp generate LFM signal algorithm
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Size: 6144 |
Author: geli |
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Description: 对EBPSK(Extended binary phase shift keying)调制雷达系统的特点，本文将其与传统的LFM(Linear frequency modulation)雷达系统进行综合性能比较。-he overall performances of EBPSK(Extended binary phase shift keying) modulation and LFM(Linear frequency modulation) radar systems are compared. First, the target detection performance base on CFAR(Constant False Alarm Rate) of two systems are analyzed under several conditions. As the time-delay is relatively large, the detection performance of EBPSK modulation radar system is better than LFM radar system. EBPSK modulation signals can combat the effect of Doppler spread on system performance in HF(High Frequency) channel.
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Size: 6144 |
Author: shell |
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Description: 雷达信号处理中，利用ECA_B算法，实现直达波及多径的抑制-In radar signal processing, the ECA_B algorithm is utilized to realize the suppression of the direct spread and multipath.
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Size: 1024 |
Author: 吕敏 |
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Description: 一种地震或地质雷达方向上波动方程在介质中传播发生反射与透射模拟的程序，简单易懂，适用于初学者。-Direction of an earthquake or geological radar wave equation in the medium dissemination on the reflection and transmission simulation program, simple, suitable for beginners.
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Size: 2048 |
Author: 于清水 |
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Description: The use of chaos in signal processing and telecommunication
in the last few years originates several results,
especially in spread spectrum system, cryptography and watermarking.
The aim of this paper is to exploit the features
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Size: 3266560 |
Author: feltekh |
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