公开(公告)号：US20150134712A1

公开(公告)日：2015-05-14

申请号：US14395087

申请日：2013-02-22

Applicant: TOKYO INSTITUTE OF TECHNOLOGY

Inventor： Isao Yamada ,  Daichi Kitahara

IPC: G01S13/90 ,  G01R33/565

CPC classification number: G01S13/90 ,  G01R33/56545

Abstract: To improve the stability of numerical calculation for finding a continuous phase of a pair of signal sequences, provided is a signal processing device (10) wherein a spline calculation unit (13) approximates a pair of signal sequences acquired by a signal acquisition unit (11) by spline functions, and an unwrapping processing unit (18) performs phase unwrapping using polynomials. The phase unwrapping is performed according to a procedure where a polynomial-sequence calculation unit (15) calculates a polynomial sequence by applying a Euclidean algorithm to the polynomials of the spline functions, a sign counting unit (17) checks the number of changes of the sign of a numerical sequence formed by arranging the values of the polynomial sequence in each subinterval where the phase is found, and an unwrapping processing unit (18) determines an indefinite portion that is an integral multiple of π on the basis of the number of changes.

Abstract translation: 为了提高用于找到一对信号序列的连续相位的数值计算的稳定性，提供了一种信号处理装置（10），其中样条计算单元（13）近似由信号获取单元（11）获取的一对信号序列 ），并且解卷处理单元（18）使用多项式执行相位展开。 根据多项式序列计算单元（15）通过对所述样条函数的多项式应用欧几里德算法来计算多项式序列的过程来执行相位展开，符号计数单元（17）检查所述多项式序列的变化次数 通过在找到相位的每个子间隔中排列多项式序列的值而形成的数字序列的符号，并且解包处理单元（18）确定作为＆pgr的整数倍的不确定部分; 在数量变化的基础上。