Web相位梯度自聚焦算法在合成孔径激光雷达中的应用与改进. 相位梯度自聚焦(pga)算法广泛应用于合成孔径雷达的运动误差补偿。激光信号波长比微波信号小3~4个数量级,因而在合成孔径激光成像过程中,实验平台的振动会引入极大的相位误差,导致成图质量下降。 http://www.scidict.org/items/Nonlinear%20Chirp%20Scaling%20Algorithm.html
SAR成像处理处理算法入门ppt.pdf-卡了网
Web讨论产生线性频率变化的公式和它的离散公式之间是否等价。Chirp信号的公式定义Chirp信号是对时间t0,t1之间频率在变化的信号，它在t0时刻的瞬间频率为fstartf_{start}fstart ，在t1时间的瞬时频率为fendf_{end}fend 。那么在任何时刻的信号值为：f(t)=A⋅sin[2π(fend−fstartt1−t0(t−t0)+fstart)⋅t]f\left(... WebCHIRP (Continuous High-resolution Image Reconstruction using Patch priors) is a Bayesian algorithm used to perform a deconvolution on images created in radio astronomy.The … imparts perth wa
SAR合成孔径雷达图像点目标仿真报告(附matlab代码)选读.docx
Web该算法只需要几个传播参数，但它能够避免深度传播阴影，并被证明可以找到全局最优的无人机位置。 ... and the maximum length of search trajectory is linear to the geographical scale. Hence, it lends itself to online search. Significant throughput gains are found when compared to other positioning approaches ... Web该文从SAR回波的二维频谱表达式入手，研究了适合高波段SAR的CS(Chirp Scaling)类算法和一种适合超宽带(Ultra Wideband，UWB)SAR成像的非线性CS算法，通过对算法推导中的近似性分析，重新刻画了SAR成像，即SAR成像是利用回波频谱特性构造频域或时域相位补偿因子的过程，尤其是对UWB SAR回波，相位补偿因子的 ... A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably with sweep signal. It is commonly applied to sonar, radar, and laser systems, and to other applications, such as in spread-spectrum communications (see chirp spread spectrum). This signal type is biologically inspired and occurs as a ph… impart springfield mo