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程序
当今世界电子对抗日益激烈，对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing，正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性，因此逐渐成为雷达领域的重点研究方向。除此之外，OFDM信号时域和频域波形都比较复杂，当雷达信号采用OFDM技术时，敌方很难精确估计发射信号波形和瞬时频率，使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时，对于同样具有大时宽带宽积的线性调频信号，OFDM信号具有更好的抗欺骗式干扰的性能，因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)
- 2020-11-19 21:49:39下载
- 积分：1
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kbbn
用matlab制作的红色小球沿螺线运动的动画 不错的源码 很好(Matlab to make along the spiral movement of the animation is good source of a small red ball very well)
- 2017-05-18 06:04:07下载
- 积分：1
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常规雷达信号软件仿真平台设计
说明： 如题，产生线性调频信号及通过匹配滤波处理(The linear frequency modulation signal is generated and processed by matched filtering)
- 2020-11-07 16:39:15下载
- 积分：1
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nmea_gps
基于vc++GPS数据解析，种类齐全，使用价值高，适用新手上手开发(Based on vc GPS data parsing , full range of high value in use , applies to the novice get started development)
- 2012-11-22 08:53:53下载
- 积分：1
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1
说明： idunno wat am i doing
- 2009-10-21 01:08:28下载
- 积分：1
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word文档对球形译码的理论原理和仿真code
word文档对球形译码的理论原理和仿真结果进行了分析
1.sphereandML是主程序，性能接近最大似然ML检测，调用了spheredecode和spheredecodeinf两个子程序；
2.main_spheretoML是主程序，性能达到最大似然NL检测，调用了spheredecodetoML和spheredecodeinftoML两个子程序。(word document on the theory of spherical decoding theory and simulation results are analyzed 1.sphereandML are the main program, performance close to the maximum likelihood ML detection, call the spheredecode and two spheredecodeinf subprogram 2.main_spheretoML are the main program, to achieve maximum performance Ran Detect NL, call a subroutine spheredecodetoML and two spheredecodeinftoML.)
- 2021-03-31 17:59:08下载
- 积分：1
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Mobile-station-data
LBS定位追踪器产品开发，移动基站经纬度数据，非常难得的资料(Mobile LBS positioning station latitude and longitude data. Rar)
- 2013-08-25 17:42:02下载
- 积分：1
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TEC
利用GPS观测文件以及地面站坐标计算电离层中的总电子含量(Files, and ground stations using GPS coordinates calculation observed in the ionosphere total electron content)
- 2010-12-28 11:26:03下载
- 积分：1
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GPS-receiver-and-fft
GPS软件接收机以及fft程序实现 可以实现，包括基本文档(The software GPS receiver and FFT program)
- 2020-07-02 02:20:02下载
- 积分：1
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4
说明： 4. 试说明卷积编解码的工作原理：
(1) 使用Simulink仿真卷积编码，并用Viterbi译码的方法进行解码，其中的编码、译码全部是自己编写代码(S-Function方式)，不是调用Simulink的已有编码、译码函数。
(2) 请在加性白高斯噪声信道中，画出比特信噪比与误码率的关系曲线。(4. Try to explain the working principle of convolutional codec:
(1) Simulink was used to simulate convolutional coding, and Viterbi decoding method was used for decoding. The coding and decoding were all written by oneself (s-function method), rather than calling the existing coding and decoding functions of Simulink.
(2) in the additive white gaussian noise channel, please draw the curve of the relationship between bit signal-to-noise ratio and bit error rate.)
- 2019-01-15 10:53:20下载
- 积分：1
