公开(公告)号：US20150185317A1

公开(公告)日：2015-07-02

申请号：US14658619

申请日：2015-03-16

Applicant: ELBIT SYSTEMS LTD.

Inventor： Hans Martin BRAUN ,  Gadi MAYDAN ,  Holger BAESSLER ,  Carston JONAS ,  Ofer KLEIN

IPC: G01S13/89 ,  G01S7/28 ,  G01S13/94

CPC classification number: G01S13/89 ,  G01S7/2806 ,  G01S7/298 ,  G01S13/5242 ,  G01S13/9023 ,  G01S13/94 ,  G01S2007/027 ,  G01S2013/9082

Abstract: A system and a method of generating a three-dimensional terrain model using one-dimensional interferometry of a rotating radar unit is provided herein. Height information is evaluated from phase differences between two echoes by applying a Kalman filter in relation to a phase confidence map that is generated from phase forward projections relating to formerly analyzed phase data. The radar system starts from a flat earth model and gathers height information of the actual terrain as the platform approaches it. Height ambiguities are corrected by removing redundant 2π multiples from the unwrapped phase difference between the echoes.

Abstract translation: 本文提供了使用旋转雷达单元的一维干涉测量来生成三维地形模型的系统和方法。 通过应用卡尔曼滤波器相对于从与以前分析的相位数据相关的相位前进投影产生的相位置信图来评估两个回波之间的相位差的高度信息。 雷达系统从平地模型开始，并在平台接近时收集实际地形的高度信息。 通过删除冗余的2＆pgr来校正高度模糊度; 来自回波之间的展开相位差的倍数。