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high-resolution-one-dimension
高分辨率要求系统具有大的带宽，瞬时带宽的增加必将提高系统对硬件的要求，本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽，使成像具有高分辨率，采用加窗和补零方法提高信噪比，但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率，使距离像细化，并用公式说明了补零只能提高距离取样分辨率，并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感，使目标能量分散到邻近的距离单元造成距离分辨率下降，如果不事先进行速度补偿，直接对回波信号进行逆傅立叶变换，将使所成一维距离像发生频谱展宽，并伴有距离像发生平移。本文证明了当目标有径向速度时仍采用对回波信号直接进行逆傅立叶变换的方法将使一维距离像发生频谱展宽并伴有距离像发生频移，从而严重影响了一维距离像的质量。(high-resolution requirements of the system with large bandwidth, the increased instantaneous bandwidth will improve the system of hardware, In this paper, a flexible and convenient step frequency signals. Pulse frequency step-pulse waveform through the carrier frequency step to achieve great changes in the effective bandwidth. make imaging with high resolution, increasing the window and fill methods to improve signal-to-noise ratio is, However, the signal on the target radial velocity is very sensitive. Using zero-distance sampling method to improve resolution, so that distance as refinement, and formulates a zero-distance sampling can improve resolution, does not alter the frequency of the signal from stepping resolution capabilities. The signal waveform on the target radial velocity sens)
- 2007-04-07 22:15:33下载
- 积分：1
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time_seris
时间序列预测算法。支持5种常见的算法
移动平均
非线性回归
指数平滑等(ar, ardemo ma)
- 2021-04-18 15:38:57下载
- 积分：1
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MatricInvers
求给定矩阵的逆矩阵和行列式值。已经经过测试，与matlab做了对比，计算结果可靠(Seeking a given matrix inverse matrix and determinant value. Has been tested with Matlab contrast, reliable calculation results)
- 2012-11-12 17:36:51下载
- 积分：1
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CRC
异或校验，用于北斗一代数据计算校验码，已验证(XOR checksum for the data checksum generation Beidou, Verified)
- 2013-07-05 09:31:54下载
- 积分：1
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zjbhydm
正交变换源程序，带vc工程。 学习正交变换算法的有力工具。(Orthogonal transformation source code, with vc works. Orthogonal transformation algorithm to learn a powerful tool.)
- 2008-04-01 22:53:07下载
- 积分：1
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ConsoleApplication1
C#写的两个简单的小程序，分别用牛顿插值法和三次样条插值法来进行插值。(A program written by C#. It uses Newton Interpolation Method and Spline Interpolation Method )
- 2015-12-03 20:23:54下载
- 积分：1
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6.5M2
偏微分方程的数值解法，简单的离散 变分以及求解过程(Numerical solution of partial differential equations, the simple and the solution process of discrete variational)
- 2011-08-15 19:58:51下载
- 积分：1
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zantaifenxi
非常实用的时域仿真法暂态分析工具，利用牛顿法求解系统的微分方程组和代数方程组，得到转子摇摆曲线，判断暂态是否稳定(Very useful time-domain simulation tool for transient analysis method, using Newton method for solving systems of differential equations and algebraic equations, the rotor swing curves, to determine the stability of transient)
- 2011-09-02 14:48:18下载
- 积分：1
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migration(FKaPS)
F-K域偏移法和相移法偏移程序（C语言）(FK domain migration method and the phase- shift method migration program (C language))
- 2021-04-06 20:59:02下载
- 积分：1
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蒙特卡罗方法用于随机过程的处理Monte-Carlo-method
蒙特卡罗方法用于随机过程的处理，其重要应用软件如geant4，本书详细介绍了蒙卡的理论和应用，有很好的参考价值(Monte Carlo method is used for treatment of stochastic processes, and its important applications such as geant4, the book details the theory and application of Monte Carlo, have a good reference value)
- 2013-06-15 15:10:54下载
- 积分：1
