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公开(公告)号：KR101848729B1
公开(公告)日：2018-04-13
申请号：KR1020160049950
申请日：2016-04-25
Applicant: 서울대학교산학협력단
Abstract: 본발명은주파수변조연속파(Frequency Modulated Continuous Wave, FMCW)를이용하는레이더및 그제어방법에관한것이다. 본발명에따른 FMCW 레이더는 0-중간주파수방식을이용하면서도보다외부잡음에강건한 FMCW 레이더시스템을제공할수 있다. 아울러, 본발명의 FMCW 레이더는서로상이한변조도및 대역폭을갖는신호가조합된 FMCW 신호를이용하여시스템의설정변경없이도동시에 2가지신호에대응하는측정이가능하다.
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公开(公告)号：KR101785684B1
公开(公告)日：2017-10-16
申请号：KR1020160127939
申请日：2016-10-04
Applicant: 서울대학교산학협력단
Abstract: 내부시간지연을이용한해양변위관측시스템의외부보정방법에있어서, 먼저송신안테나를통하여대상물체로송신파를송신한다. 이어서, 수신안테나를통하여상기대상물체로부터반사된수신파를수신한다. 이후에, 횡방향으로상기송신안테나와상기수신안테나사이의상대거리를변경한다. 계속해서, 상기송신안테나와의상기상대거리가변경되는상기수신안테나로부터수신되는상기수신파를인가받아상기수신안테나의방위각방향위치변위에대한비트주파수의 2차원데이터형태를갖는원시데이터를생성한다. 이어서, 상기 2차원데이터형태를갖는상기원시데이터에서소정의비트주파수에해당하는위치변위데이터를추출하여방향신호데이터를생성한다. 이후에, 상기방향신호데이터를상기위치변위와위상의함수로변환하여위상변화데이터를생성한다. 계속해서, 상기위상변화데이터에위상펼침(phase unwrapping) 작업을수행하여시스템지연을추출한다. 이어서, 상기시스템지연을이용하여상기대상물체와의거리를보정한다.
Abstract translation: 在使用内部时间延迟的海上位移观测系统的外部校准方法中，首先通过发射天线将发射波发射到目标物体。 然后，通过接收天线接收从物体反射的接收波。 此后，发射天线和接收天线之间的相对距离沿横向改变。 接下来，通过接收从发射天线和地面站之间的距离改变的接收天线接收到的接收波，产生具有相对于接收天线的方位角方向位置的位移的比特频率的二维数据形式的原始数据。 然后，从具有二维数据形式的原始数据中提取对应于预定位频率的位移数据以产生定向信号数据。 之后，方向信号数据被转换成位移和相位的函数以产生相变数据。 随后，对相位变化数据执行相位解缠操作以提取系统延迟。 随后，使用系统延迟来校正到对象的距离。
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公开(公告)号：KR1020130056428A
公开(公告)日：2013-05-30
申请号：KR1020110122035
申请日：2011-11-22
Applicant: 서울대학교산학협력단
Abstract: PURPOSE: A method and a device for sensing oyster in a mud flat are provided to grasp a habitat and a growth condition of the oyster in a short time. CONSTITUTION: A method for sensing oyster in a mud flat is as follows. After oscillating microwaves to the mud flat, a habitat and a growth condition of the oyster are estimated by using a difference of the extent of the microwaves scattered on the surface of the oyster. A frequency of one of the microwaves is 5.5-6.0 cm. A frequency of one of the microwaves is 24 cm.
Abstract translation: 目的：提供一种用于感测泥浆中牡蛎的方法和装置，以便在短时间内掌握牡蛎的栖息地和生长状况。 构成：用于感测泥浆中牡蛎的方法如下。 在将微波振荡到泥土平台之后，通过使用分散在牡蛎表面上的微波程度的差异来估算牡蛎的栖息地和生长状况。 其中一个微波的频率为5.5-6.0厘米。 其中一个微波的频率为24厘米。
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Patent Agency Ranking
公开(公告)号：KR101538858B1
公开(公告)日：2015-07-23
申请号：KR1020130144081
申请日：2013-11-25
Applicant: 서울대학교산학협력단
IPC: G01W1/14 , G01F23/284
CPC classification number: G01W1/14
Abstract: 본발명은적설량측정장치에관한것으로, 보다구체적으로지면으로부터적설된눈의높이를자동적으로보다정확하게측정하는적설량측정장치에관한것이다. 상기적설량측정장치는지면으로부터일정한높이에형성되는지지부, 상기지지부에구비되며, 상기지면에신호를송신하고, 상기지면으로부터산란된상기신호를수신하는제1송수신부, 상기지지부에구비되며, 적설된눈 표면에신호를송신하고, 상기눈 표면으로부터산란된상기신호를수신하는제2송수신부및 상기제1송수신부와제2송수신부에각각수집되는상기신호의정보를연산하여눈이적설된높이를계산하는연산부를포함한다. 여기서, 상기연산부를통해연산된결과값인적설량을표시하는디스플레이부를더 포함한다.
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公开(公告)号：KR102258202B1
公开(公告)日：2021-05-28
申请号：KR1020200025153
申请日：2020-02-28
Applicant: 서울대학교산학협력단
IPC: G01S13/90
Abstract: 항공기기반영상복원장치용가상해수면모델생성장치는가상해수면생성부, 전파응답특성함수설정부, 크기성분함수설정부, 및가상원시데이터생성부를포함한다. 상기가상해수면생성부는수직한계, 가로한계, 및세로한계를인가받아임의의굴곡진금속면영상을생성하여가상해수면으로설정하고, 상기가상해수면을다수의화소들로구분하여각 화소별미소표면으로샘플링한다. 상기전파응답특성함수설정부는상기가상해수면생성부에의해생성된상기각 화소별미소표면에대하여유전율, 표면거칠기, 상기송신파의입사각이반영된후방산란특성을전파응답특성함수로설정한다. 상기크기성분함수설정부는상기전파응답특성함수를이용하여크기성분함수를생성한다. 상기가상원시데이터생성부는상기크기성분함수설정부에의해설정된상기각 화소별크기성분함수를상기각 화소별거리에대응되는수신신호에곱하여상기가상원시데이터를생성한다.
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公开(公告)号：KR102156490B1
公开(公告)日：2020-09-15
申请号：KR1020190015224
申请日：2019-02-08
Applicant: 서울대학교산학협력단 , 아주대학교산학협력단
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公开(公告)号：KR1020130056429A
公开(公告)日：2013-05-30
申请号：KR1020110122036
申请日：2011-11-22
Applicant: 서울대학교산학협력단
Abstract: PURPOSE: A calibration and validation method of an active multi-polarization radar system is provided to obtain a correction constant using a reflected signal reflected in a system without installing a reference target on a field, thereby implementing calibration and validation even in an observation environment where the installation of a reference target is not easy, and to facilitate the reduction of costs and time compared to the existing calibration and validation techniques using the reflected signal in the radar system. CONSTITUTION: A calibration and validation method of an active multi-polarization radar system includes the following steps: a step of constructing a radar system, equipped with a circuit oscillating an electromagnetic wave which has multiple polarization states, and an antenna receiving the electromagnetic wave; a step of performing reference target observation for all the observation directions, desired to be observed on a field, of the radar system in an electromagnetic shielded room using the radar system, and constructing a database thereof(S2); a step of performing radar system observation for a newly defined reference point in the electromagnetic shielded room(S3); a step of performing radar system observation for a new reference point on a field, and then performing observation for a desired target(S4); a step of calculating a correction constant through the ratio of observation values to the reference point performed in the electromagnetic shielded room and on the field(S5); a step of constructing a database for the reference target on a field using pre-constructed database materials for a reference target and the correction constant(S6); and a step of calculating the system noise from the constructed database for the reference target on a field using a theoretical back-scattering coefficient for a reference target(S7,S8). The correction constant defines a reflected signal caused by the discrepancy of the threshold values on the junction of the radar system circuit transmission line and the antenna, as a reflection loss, and the newly defined reference point is the junction. [Reference numerals] (S1) Observe a reference target in an electromagnetic anechoic chamber; (S2) Construct a DB; (S3) Observe a new reference target in the electromagnetic anechoic chamber; (S4) Observe the new reference target on a field; (S5) Calculate a correction constant through the ratio of observation values; (S6) Construct reference target data on the field; (S7) Use a theoretical back-scattering coefficient for the reference target; (S8) Calculate noise of a data system
Abstract translation: 目的：提供一种主动多极化雷达系统的校准和验证方法，以使用反映在系统中的反射信号获得校正常数，而无需在场上安装参考目标，从而即使在观察环境中进行校准和验证 参考目标的安装不容易，并且与使用雷达系统中的反射信号的现有校准和验证技术相比，便于降低成本和时间。 构成：主动多极化雷达系统的校准和验证方法包括以下步骤：构建雷达系统的步骤，配备振荡具有多极化状态的电磁波的电路和接收电磁波的天线; 对使用该雷达系统的电磁屏蔽室中的雷达系统的场中的所有观测方向进行基准目标观察，构建其数据库的步骤（S2）; 对电磁屏蔽室中新定义的参考点进行雷达系统观测的步骤（S3）; 对场上的新参考点执行雷达系统观测，然后对期望的目标进行观察的步骤（S4）; 通过在电磁屏蔽室和场中执行的观测值与参考点的比率来计算校正常数的步骤（S5）; 使用用于参考目标的预构建的数据库材料和校正常数来构建用于参考目标的数据库的步骤（S6）; 以及使用用于参考目标的理论背散射系数，在场上用于参考目标的所构建的数据库中计算系统噪声的步骤（S7，S8）。 校正常数定义由雷达系统电路传输线和天线的接合处的阈值的差异引起的反射信号，作为反射损耗，并且新定义的参考点是结。 （参考号）（S1）观察电磁消声室中的基准目标; （S2）构建DB; （S3）观察电磁消声室中的新参考目标; （S4）观察一个领域的新参考目标; （S5）通过观测值的比例计算校正常数; （S6）构建场上参考目标数据; （S7）对参考目标使用理论反散射系数; （S8）计算数据系统的噪声
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