公开(公告)号：US10788578B2

公开(公告)日：2020-09-29

申请号：US15818084

申请日：2017-11-20

Applicant: Korea Aerospace Research Institute

Inventor： Young Jin Won

IPC: G01S13/90 ,  H01Q3/28 ,  H01Q3/30

Abstract: Provided is an antenna pattern synthesizing apparatus that synthesizes an antenna pattern by applying quantum-behaved particle swarm optimization (QPSO) algorithm of a satellite synthetic aperture radar (SAR), the antenna pattern synthesizing apparatus including a designer configured to design a mask template based on a performance of an SAR system including an antenna array in which a plurality of antennas are arranged in a multidimensional structure, and a generator configured to calculate a signal amplitude and a signal phase for the antenna array to generate a first antenna pattern using QPSO, and generate the first antenna pattern in the designed mask template based on the calculated signal amplitude and the calculated signal phase.

公开(公告)号：US10274584B2

公开(公告)日：2019-04-30

申请号：US15103145

申请日：2014-11-20

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Sang Burm Ryu ,  Jeong Hwan Yang ,  Jong Pyo Kim ,  Young Jin Won ,  Young Jun Cho ,  Chul Kang ,  Sang Kon Lee

IPC: G01S7/35 ,  G01S13/02 ,  G01S13/34

Abstract: The present invention relates to an apparatus and method for generating a bidirectional chirp signal by using a phase accumulation polynomial, and the apparatus for generating a bidirectional chirp signal according to an embodiment may include an extraction unit extracting time interval information from the output of a frequency accumulator, a polynomial handling unit applying the phase accumulation polynomial to the extracted time interval information to generate a polynomial output value, and a bidirectional chirp signal output unit outputting a bidirectional chirp signal on the basis of the generated polynomial output value.

公开(公告)号：US20160370457A1

公开(公告)日：2016-12-22

申请号：US15103145

申请日：2014-11-20

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Sang Burm Ryu ,  Jeong Hwan Yang ,  Jong Pyo Kim ,  Young Jin Won ,  Young Jun Cho ,  Chul Kang ,  Sang Kon Lee

IPC: G01S7/35 ,  G01S13/02

CPC classification number: G01S7/35 ,  G01S7/354 ,  G01S13/02 ,  G01S13/345

Abstract: The present invention relates to an apparatus and method for generating a bidirectional chirp signal by using a phase accumulation polynomial, and the apparatus for generating a bidirectional chirp signal according to an embodiment may include an extraction unit extracting time interval information from the output of a frequency accumulator, a polynomial handling unit applying the phase accumulation polynomial to the extracted time interval information to generate a polynomial output value, and a bidirectional chirp signal output unit outputting a bidirectional chirp signal on the basis of the generated polynomial output value.

Abstract translation: 本发明涉及一种通过使用相位累积多项式来生成双向线性调频脉冲信号的装置和方法，并且根据实施例的用于产生双向线性调频信号的装置可以包括提取单元，从频率的输出提取时间间隔信息 累加器，多项式处理单元，将相位累积多项式应用于所提取的时间间隔信息以产生多项式输出值;以及双向线性调频脉冲信号输出单元，其基于所生成的多项式输出值输出双向线性调频脉冲信号。