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1. 发明授权

US06452181B1 Method and system for two-dimensional interferometric radiometry 失效
公开(公告)号：US06452181B1
公开(公告)日：2002-09-17
申请号：US09757351
申请日：2001-01-08
申请人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
发明人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
IPC分类号： G01J502
CPC分类号： G01C11/00
摘要： A method and system are disclosed for imaging a planetary surface region of interest (ROI). In a primary application, a plurality of space vehicles having antennas mounted thereupon are utilized to collect thermal radiation emitted from the ROI and generate corresponding thermal emission signals. Such thermal emission signals may be combined to yield one or more simple interferometric fringes. The simple fringes may be employed to yield a pixel image of the ROI. In one aspect, one or more simple interferometric fringes may be utilized to generate one or more compound interferometric fringes for use in formation of the pixel image. One or more compound fringes may be utilized to generate additional levels of compound fringes for use in formation of the pixel image. In another aspect, the space vehicles may be positioned in a “near-field” imaging arrangement relative to the ROI and a matched filtering approach may be utilized for extracting amplitude data from the interferometric fringe(s) on a basis for use in pixel image formation.

2. 发明授权

US06441376B1 Method and system for two-dimensional interferometric radiometry 失效
公开(公告)号：US06441376B1
公开(公告)日：2002-08-27
申请号：US09731113
申请日：2000-12-06
申请人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
发明人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
IPC分类号： G01J502
CPC分类号： G01C11/00
摘要： A method and system are disclosed for imaging a planetary surface region of interest (ROI). In a primary application, a plurality of space vehicles having antennas mounted thereupon are utilized to collect thermal radiation emitted from the ROI and generate corresponding thermal emission signals. Such thermal emission signals may be combined to yield one or more simple interferometric fringes. The simple fringes may be employed to yield a pixel image of the ROI. In one aspect, one or more simple interferometric fringes may be utilized to generate one or more compound interferometric fringes for use in formation of the pixel image. One or more compound fringes may be utilized to generate additional levels of compound fringes for use in formation of the pixel image. In another aspect, the space vehicles may be positioned in a “near-field” imaging arrangement relative to the ROI and a matched filtering approach may be utilized for extracting amplitude data from the interferometric fringe(s) on a basis for use in pixel image formation.

3. 发明授权

US06586741B2 Method and system for two-dimensional interferometric radiometry 失效
公开(公告)号：US06586741B2
公开(公告)日：2003-07-01
申请号：US10151673
申请日：2002-05-20
申请人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
发明人： Carter M. Glass , Arthur Casimir Golubiewski , Lori K. Harrison , Scott David Alexander , Christopher Taylor Herring
IPC分类号： G01J502
CPC分类号： G01C11/00
摘要： A method and system are disclosed for imaging a planetary surface region of interest (ROI). In a primary application, a plurality of space vehicles having antennas mounted thereupon are utilized to collect thermal radiation emitted from the ROI and generate corresponding thermal emission signals. Such thermal emission signals may be combined to yield one or more simple interferometric fringes. The simple fringes may be employed to yield a pixel image of the ROI. In one aspect, one or more simple interferometric fringes may be utilized to generate one or more compound interferometric fringes for use in formation of the pixel image. One or more compound fringes may be utilized to generate additional levels of compound fringes for use in formation of the pixel image. In another aspect, the space vehicles may be positioned in a “near-field” imaging arrangement relative to the ROI and a matched filtering approach may be utilized for extracting amplitude data from the interferometric fringe(s) on a basis for use in pixel image formation.

4. 发明授权

US6011625A Method for phase unwrapping in imaging systems 失效
标题翻译：成像系统中相位展开的方法
公开(公告)号：US6011625A
公开(公告)日：2000-01-04
申请号：US112049
申请日：1998-07-08
申请人： Carter M. Glass
发明人： Carter M. Glass
IPC分类号： G01S13/90 , G01B9/02
CPC分类号： G01S13/9023
摘要： An improved method is provided for phase unwrapping in coherent imaging systems which use two complex images to form an interferogram. In the improved method, the interferogram of phase differences is divided into a relatively large plurality of transform blocks, wherein each transform block comprises a matrix of o.times.p data samples, with o and p=2.sup.n +1, and n being an integer greater than 2. Further, adjacent transform blocks are preferably defined to partially overlap. The wrapped phase values of adjacent data samples within each transform block are then compared and if the difference therebetween exceeds a predetermined value, the entire block of data samples may be discarded for further use. Data samples of the retained transform blocks are then unwrapped to obtain phase values via an unweighted, least-squares technique implemented by Fast Fourier Transform. Using a known height value corresponding with a single data sample, an integration constant can be determined for a corresponding first transform block. Path-following may then be used to determine an integration constant for the other retained transform blocks. The phase values and integration constants may then be employed to determine height values for the interferogram. The disclosed method yields enhanced accuracy with reduced computational burden.
摘要翻译：提供了一种改进的方法，用于使用两个复杂图像形成干涉图的相干成像系统中的相位展开。在改进的方法中，相位差的干涉图被划分成相对较大的多个变换块，其中每个变换块包括oxp数据样本的矩阵，其中o和p = 2n + 1，n是大于2的整数此外，相邻的变换块优选被限定为部分重叠。然后比较每个变换块内相邻数据样本的包裹相位值，如果它们之间的差值超过预定值，则整个数据样本块可能被丢弃以供进一步使用。然后通过快速傅里叶变换实现的未加权最小二乘技术展开保留的变换块的数据样本以获得相位值。使用与单个数据样本对应的已知高度值，可以确定对应的第一变换块的积分常数。然后可以使用路径跟踪来确定其他保留的变换块的积分常数。然后可以使用相位值和积分常数来确定干涉图的高度值。所公开的方法产生增加的精度，减少了计算负担。

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