Name: time multiplexing super resolving technique for imaging from a moving platform
Uploaded: 2014-02-12T22:00:00
Description: Watch this Scientific Journal Video about Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform at JoVE.com

1。设置对齐<ol><li>先大致对准激光，光束扩张器，透镜，相机在同一轴线上，这将是光轴。 </li><li>打开激光器（没有USAT目标），并确保光通过透镜的中心。使用光圈光圈来验证。 </li><li>打开相机电源，并确保在光聚焦在相机的中心。 </li><li>移回相机，使用线性Ž阶段。由于系统会失焦，光点会越来越大。确保该点的中心保持在相同的横向位置。如果不是，小心改变成像系统的位置，并重复该?...

<ol>
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光学合成孔径雷达（OSAR）的概念，是本文提出的是，使用了GS算法和扫描技术，以提高物体的在扫描方向上的空间分辨率的一个新的超分辨的方法。成像平台的运动可以是自我生成，同时使用一个空中或卫星平台。不像许多时间复用SR技术，我们的方法不需要对象的任何先验信息，比的事实，它是静止的在成像过程中的其他。所提出的技术是用于提高分辨率以3倍，在扫描方向上。通过3倍的...

在雷达成像，传输的脉冲射频（RF）的窄角光束被使用，其安装在一个平台上的天线。雷达信号在朝向表面1,2侧视方向传送。该反射信号被从表面反向散射和接收相同的天线2。所接收的信号被转换为一个雷达图象。在实孔径雷达（RAR）在方位方向上的分辨率是成正比的波长成反比的孔径尺寸3。从而，一个更大的天线是必需的较高的方位分辨率。然而，这是难以安装大天线向移动平台上，如飞机和卫星。在1951年威利4建议称为合成孔径雷达（SAR）的一个新的雷达技术，它使用由成像平台的运动产生的多普勒效应。在SAR中，振幅以及所接收到的信号的相位被记录5 </SUP&gt;。这是可能的，因为SAR光频率是约1-100 GHz的6和相位是利用安装在平台顶部的参考本地振荡器记录。在光学成像，较短的波长被使用，如可见和近红外（NIR），大约是1微米，约10 14赫兹，即频率。的电场强度，而不是字段本身，由于光学相位变化太快检测用标准的基于硅的检测器被检测。 而通过光学系统成像的对象时，光学系统的孔径作为一个低通滤波器。因此，对象的高频空间信息丢失7。在本文中，我们的目标是分别解决每个上面提到的问题， 即相丢失，衍射极限的效果。 的Gerchberg和萨克斯顿（GS）8表明，该光学相位可以retrie使用迭代过程粘弹性阻尼器。 Misell 9-11扩展了算法对于任意两个输入和输出的飞机。这些方法已被证明可收敛到相位分布以最小均方误差（MSE）12,13。古尔和Zalevsky 14提出了三个平面的方法提高了Misell算法。 我们提出并展示实验，恢复的相位而移动的摄像透镜，由于完成了在SAR应用的天线允许我们合成增加沿扫描轴的孔的有效尺寸，并最终提高所得到的成像分辨率。 SAR在使用干涉和全息光学成像的应用是众所周知的16,17。然而，所提出的方法的目的是为模仿扫描成像平台，使其适合于非相干成像（如侧视机载平台）。因此，全息的概念，WHI通道使用的参考光束，不适合于这种应用。取而代之的是，修改的Gerchberg-萨克斯顿算法用于以检索的相位。

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			<td align="left" height="22" style="height:22px;width:311px;">Red Laser Module</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=LDM635">LDM635</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">10X Galilean Beam Expander</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=BE10M-A">BE10M-A</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">Negative 1951 USAF Test Target</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=R3L3S1N">R3L3S1N</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">Filter holder for 2&#34; Square Filters</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=FH2">FH2</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">1&#34; Linear Translation Stage</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=PT1">PT1</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">Lens Mount for &#216;1&#34; Optics</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=LMR1">LMR1</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">Lens f = 100.0mm</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=AC254-100-A">AC254-100-A</a></td>
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			<td align="left" height="22" style="height:22px;width:311px;">Graduated Ring-Activated Iris Diaphragm</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://www.thorlabs.com/thorproduct.cfm?partnumber=SM1D12C">SM1D12C</a></td>
			<td style="width:261px;"></td>
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			<td align="left" height="22" style="height:22px;width:311px;">2.5x2.5mm Aperture &#216;1&#34;</td>
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			<td style="width:259px;"></td>
			<td style="width:261px;">Indoor production</td>
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			<td align="left" height="22" style="height:22px;width:311px;">High Resolution CMOS Camera</td>
			<td style="width:311px;">Thorlabs</td>
			<td style="width:259px;"><a href="http://thorlabs.com/thorProduct.cfm?partNumber=DCC1545M">DCC1545M</a></td>
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time multiplexing super resolving technique for imaging from a moving platform

我们提出用于提高对象的分辨率，克服安装在一个移动的成像系统，诸如机载平台或卫星之上的光学系统的衍射极限的方法。在一个两步骤过程中得到的分辨率的改善。首先，三个低解析度不同离焦图像被捕获和光相位是使用改进的迭代的Gerchberg - 萨克斯顿基于算法检索。相位恢复允许数值回到传播领域的孔径平面。第二，该成像系统被转移和第一步骤是重复的。在孔径平面所获得的光场进行组合和合成增加了透镜孔径沿运动方向产生的，产生更高的成像分辨率。该方法类似于从微波领域公知的方法，被称为合成孔径雷达（SAR），其中，天线的尺寸是合成沿平台增加传播方向。该方法是通过实验室实验证明。

<html>为9捕获的图像（在3横向位置3的散焦图像）的例子示于图3。 为GS收敛的例子示于图4。的相关系数为中央图像I 1，b为0.95以上，且相关系数为侧面图像I 1，a和I 1，c为0.85以上（完全数值模拟它们全部通过0.99）。 具有代表性的结果为SR图像呈现在图5。在LR图像没有分辨率的酒吧是可见的。但...

Watch this Scientific Journal Video about Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform at JoVE.com

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

一种克服光学衍射极限方法。该方法包括两个步骤的过程：光相位恢复用迭代的Gerchberg-萨克斯顿算法和成像系统移动之后的第一步骤的重复。一个合成增加光圈沿运动方向产生的，产生更高的成像分辨率。

时间复用超解析技术成像的运动平台

We propose a method for increasing the resolution of an object and overcoming the diffraction limit of an optical system installed on top of a moving ...

Research

JoVE Journal

Engineering

Visualization of High Speed Liquid Jet Impaction on a Moving Surface

高速喷液嵌塞对移动表面的可视化

Two apparatuses for examining liquid jet impingement on a high-speed moving surface are described: an air cannon device (for examining surface speeds ...

科研

工程学

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

从单电浆纳米粒子散射非线性测量

Plasmonics, which are based on the collective oscillation of electrons due to light excitation, involve strongly enhanced local electric fields and thus ...

Use of a Multi-compartment Dynamic Single Enzyme Phantom for Studies of Hyperpolarized Magnetic Resonance Agents

一个多腔动态单一酶幻影超极化磁共振剂研究的用途

Imaging of hyperpolarized substrates by magnetic resonance shows great clinical promise for assessment of critical biochemical processes in real time. Due ...

A High Performance Impedance-based Platform for Evaporation Rate Detection

蒸发速率检测一种基于阻抗高性能平台

This paper describes the method of a novel impedance-based platform for the detection of the evaporation rate. The model compound hyaluronic acid was ...

A Robotic Platform to Study the Foreflipper of the California Sea Lion

机器人平台研究加州海狮的Foreflipper

The California sea lion (Zalophus californianus), is an agile and powerful swimmer. Unlike many successful swimmers (dolphins, tuna), they generate most ...

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy ATOM

微流控成像流式细胞仪通过不对称检测时间延伸光学显微镜（ATOM）

Scaling the number of measurable parameters, which allows for multidimensional data analysis and thus higher-confidence statistical results, has been the ...

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging

Hyperlens 综合显微镜和超分辨率成像的演示

The use of super-resolution imaging to overcome the diffraction limit of conventional microscopy has attracted the interest of researchers in biology and ...

Multiplexing Focused Ultrasound Stimulation with Fluorescence Microscopy

荧光显微镜对聚焦超声的刺激

By focusing low-intensity ultrasound pulses that penetrate soft tissues, LIPUS represents a promising biomedical technology to remotely and safely ...

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

使用 FBG 传感器多路复用在电线圈中分布式原位热热点监控的设计、仪器和使用协议

Random wound coils are a key operational element of most electric apparatus in modern industrial systems, including low voltage electric machines. One of ...

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

录制超逼真的全彩色模拟全息图，用于移动全息图显示

This paper demonstrates a method to record a set of twelve ultra-realistic full-color analog holograms presenting the same brightness, transparency and ...