Description: 以下几个matlab程序对雷达常用的线性调频信号（lfm信号）进行脉冲压缩时的关键问题进行了仿真，其中包括旁瓣抑制影响（加窗与不加窗）、多卜勒频移影响，并对时域脉压与频域脉压结果进行了对比分析，供相关技术人员参考。-Matlab following procedures commonly used on the radar LFM signal (lfm signal) for pulse compression at the time of the key issues of simulation, including the impact of sidelobe suppression (plus a window with no window), the impact of Doppler frequency shift, time domain and frequency domain pulse pressure and pulse pressure results of comparative analysis of relevant technical personnel for reference. Platform: |
Size: 5120 |
Author:panyouyu |
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Description: 一种通用型PD雷达目标模拟器,介绍一种雷达目标模拟器，用两台高稳定度且具有外时基功能的频率合成微波信号源分别作为回波信号及杂波信号载波源，其外时基口作为雷达相参信号输入口。视频脉冲延时及多普勒撅移都可由计算机控制，模拟雷达与目标之间的不同距离及相对速度.模拟器收发共用一付
天线，天线安装在可旋转机构上，用以检测雷达角跟踪能力.
-A Common PD Radar Target Analogue
, introduced a radar target simulator, with two high-stability and external time base function of frequency synthesized microwave signal source, respectively, as the echo signal and the the clutter signal carrier source, its external time base port as radar coherent signal input port. The video pulse delay and Doppler pursed shift can by distance and relative speed between different computer controlled, simulated radar target simulator transceiver shared a pair of antenna, antenna mounted on the rotatable mechanism to detect radar angle tracking capacity. Platform: |
Size: 239616 |
Author:李亮 |
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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 Platform: |
Size: 615424 |
Author:sunrong |
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Description: Radar can determine an object’s location, keep a record of past locations, and can give an estimate as to where this object, or target, will be. Radar measures a target by emitting an electromagnetic signal and measuring the reflection off of the target. By measuring the round trip time and Doppler frequency shift, this method measures distance and velocity very well, but measures angle very poorly. Sometimes rather than keep track of every aspect of a target’s trajectory, radar will instead use a simplified representation based on only one or two observables that are measured very accurately and precisely – range and Doppler frequency shifts. Platform: |
Size: 1533952 |
Author:kalaiarasan.R |
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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. Platform: |
Size: 6144 |
Author:shell |
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Description: 本程序为脉冲压缩雷达回波产生与处理。包括产生相位编码目标回波、对回波进行I/Q解调、匹配滤波，分析多普勒频移对脉冲压缩的影响等。-This procedure for pulse compression radar echo generation and processing, including the generation of phase coded target echo, echo IQ demodulation, matched filtering, analysis of the impact of Doppler shift on the pulse compression
Platform: |
Size: 1024 |
Author:DaisyLee |
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Description: 1、目标速度引起的失真，时间膨胀因子10%、chirp中心频率偏移5%。
2、超高速运动对脉冲压缩的影响，多普勒频移补偿(Distortion caused by target speed, time dilation factor 10%, and chirp center frequency offset 5%.
Effects of ultra high speed motion on pulse compression and Doppler frequency shift compensation) Platform: |
Size: 2048 |
Author:DVD发的v
|
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Description: 以下几个matlab程序对雷达常用的线性调频信号（lfm信号）进行脉冲压缩时的关键问题进行了仿真，其中包括旁瓣抑制影响（加窗与不加窗）、多卜勒频移影响，并对时域脉压与频域脉压结果进行了对比分析，供相关技术人员参考。(The following several matlab programs simulate the key issues when pulse compression is performed on radar commonly used chirp signal (lfm signal), including sidelobe suppression effects (window and windowless), Doppler frequency shift effects, and The time-domain pulse pressure and frequency-domain pulse pressure results were compared and analyzed for reference by the relevant technical personnel.) Platform: |
Size: 6144 |
Author:cozekpdb |
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Search - DOPPLER SHIFT radar