公开(公告)号：US20150226827A1

公开(公告)日：2015-08-13

申请号：US14521401

申请日：2014-10-22

Applicant: Polaris Sensor Technologies, Inc.

Inventor： Todd Michael Aycock ,  David Chenault ,  Arthur Lompado ,  Larry J. Pezzaniti

IPC: G01S3/786 ,  G06K9/20 ,  G06K9/00

CPC classification number: G01S5/163 ,  G01S3/783 ,  G01S3/7861 ,  G01S3/7862 ,  G01S5/0263 ,  G01S5/16 ,  G06K9/00624 ,  G06K9/00671 ,  G06K9/209 ,  G06K9/4604 ,  G06T7/70 ,  G06T2207/20061 ,  G06T2207/30181 ,  H04N7/183

Abstract: A system for determining a new orientation and/or position of an object comprises a sky polarimeter configured to record image data of the sky, a signal processing unit, and logic configured to receive and store in memory the image data received from the sky polarimeter. The logic calculates the Stokes parameters (S0, S1, S2,), DoLP, and AoP from the image data, detects obscurants and filters the obscurants (such as clouds and trees) from the image data to produce a filtered image. The logic is further configured to find the Sun and zenith in the filtered image, and to determine the roll, pitch, yaw, latitude and longitude of the object using the filtered image. A method for determining a new position/orientation of an object comprises recording raw image data using a sky polarimeter, calculating S0, S1, S2, DoLP, and AoP from the image data, detecting obscurants and filtering the obscurants from the image data to produce a filtered image, obtaining last known position/orientation data of the object, finding the Sun and zenith in the filtered image, and determining the roll, pitch, yaw, latitude and longitude of the object using the filtered image.

Abstract translation: 一种用于确定物体的新取向和/或位置的系统包括被配置为记录天空的图像数据的天体偏振计，信号处理单元和被配置为在存储器中存储从天线偏振计接收的图像数据的逻辑。 该逻辑从图像数据计算斯托克斯参数（S0，S1，S2，），DoLP和AoP，从图像数据中检测晦暗并过滤掉晦暗者（如云和树）以产生滤波图像。 该逻辑被进一步配置成在经滤波的图像中找到太阳和天顶，并且使用滤波图像来确定对象的滚动，俯仰，偏航，纬度和经度。 一种用于确定对象的新位置/取向的方法包括使用天空偏振计记录原始图像数据，从图像数据计算S0，S1，S2，DoLP和AoP，从图像数据中检测晦暗并对晦暗进行滤波以产生 滤波图像，获得对象的最后已知位置/取向数据，在滤波图像中找到太阳和天顶，以及使用滤波图像确定对象的滚动，俯仰，偏航，纬度和经度。