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公开(公告)号：KR101323681B1
公开(公告)日：2013-10-30
申请号：KR1020120029664
申请日：2012-03-23
Applicant: 국방과학연구소
Abstract: 본 발명은 OFDM 레이더 시스템에서 목표물의 속도를 추정하기 위한 속도추정장치 및 속도추정방법에 관한 것으로, 임의의 수열 신호를 생성하는 수열신호 생성부; 상기 수열신호 생성부에서 생성된 수열신호를 위상편이변조(Phase Shift Keying)하는 위상편이변조부; 상기 위상편이변조부에서 위상편이변조된 신호를 병렬 변환하는 직렬-병렬 변환부; 상기 직렬-병렬 변환부에서 병렬 변환된 신호에 IFFT(Inverse Fast Fourier Transform)처리를 행하는 IFFT 처리부; 상기 IFFT 처리부에서 IFFT 처리된 신호와 국부발진기에서 생성된 국부발진신호를 합성한 송신신호를 안테나를 통해 송신하는 제1 신호합성부; 상기 송신신호가 목표물에 반사되어 상기 안테나를 통해 수신되는 수신신호와 상기 국부발진기에서 생성된 국부발진신호를 합성하는 제2 신호합성부; 상기 제2 신호합성부에서 합성된 신호를 펄스압축하는 펄스압축부; 상기 펄스압축부에서 펄스압축된 신호에 FFT(Fast Fourier Transform)처리를 행하는 FFT 처리부; 상기 FFT 처리부에서 FFT 처리된 신호를 직렬 변환하는 병렬-직렬 변환부; 및, 상기 병렬-직렬 변환부에서 직렬 변환된 신호에 포함된 수열신호와, 상기 송신 신호에 포함된 수열신호의 자기상관 관계 및 위상변화를 이용하여 상기 목표물의 속도를 추정하는 속도추정부를 포함하여 구성된다.
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公开(公告)号：KR101303769B1
公开(公告)日：2013-09-04
申请号：KR1020120147211
申请日：2012-12-17
Applicant: 국방과학연구소
IPC: G01S13/34
Abstract: PURPOSE: A method for a suppression and a detection of an interference signal in a frequency modulated continuous wave (FMCW) radar is provided to detect effectively an interference signal which is relatively small comparing with a received signal, and to suppress the interference signal through a band-stop filter. CONSTITUTION: A method for a detection of an interference signal in a frequency modulated continuous wave (FMCW) radar comprises the following steps: a signal piece step (S400) aims to divide into pieces by using a pre-set window in a received bit signal; a Fourier transform step (S410) aims to perform a Fourier transform about each piece; a spectral magnitude mean value examine step (S420) aims to examine a spectral magnitude mean value within an information band section in a spectrum of the each piece which is Fourier-transformed; a window moving step (S430) aims to perform the spectral magnitude mean value examine step or the signal piece step by moving the pre-set window to another position among the received bit signals; a change amount calculate step (S440) aims to calculate a change amount of the bit signal by using the spectral magnitude mean value; and an interference generate spot predict step (S450) aims to predict an interference generate spot, and to detect whether the interference signal is generated or not by comparing the calculated change amount with a threshold. [Reference numerals] (AA) Start; (BB) End; (S400) Divide the received bit signal into pieces; (S410) Perform a Fourier transform about each piece; (S420) Examine a spectral magnitude mean value within an information band section; (S430) Repeat the previous steps by using the pre-set window; (S440) Check whether there is interference or not by using the change of the size of the spectrum; (S450) Recognize the occurrence of interference when RAS is above a threshold
Abstract translation: 目的：提供一种用于抑制和检测频率调制连续波（FMCW）雷达中的干扰信号的方法，用于有效地检测与接收信号相比较小的干扰信号，并通过一个 带阻滤波器。 构成：用于检测频率调制连续波（FMCW）雷达中的干扰信号的方法包括以下步骤：信号段步骤（S400），旨在通过在接收到的位信号中使用预置窗口来分割 ; 傅立叶变换步骤（S410）旨在对每个片段执行傅里叶变换; 频谱幅度平均值检查步骤（S420）旨在检查经傅里叶变换的每个片段的频谱内的信息频带部分内的频谱幅度平均值; 窗口移动步骤（S430）旨在通过将预设窗口移动到接收到的位信号中的另一位置来执行频谱幅度平均值检查步骤或信号段步骤; 改变量计算步骤（S440）旨在通过使用频谱幅度平均值来计算比特信号的变化量; 并且干扰生成点预测步骤（S450）旨在预测干扰生成点，并且通过将计算的改变量与阈值进行比较来检测干扰信号是否产生。 （附图标记）（AA）开始; （BB）结束; （S400）将接收到的比特信号分割成块; （S410）对每个片段进行傅里叶变换; （S420）检查信息带段内的频谱幅度平均值; （S430）使用预设窗口重复上述步骤; （S440）通过使用频谱大小的变化来检查是否存在干扰; （S450）识别当RAS高于阈值时发生干扰
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公开(公告)号：KR101248463B1
公开(公告)日：2013-04-02
申请号：KR1020120098786
申请日：2012-09-06
Applicant: 국방과학연구소
Abstract: PURPOSE: A shooting device for dummy ammunition is provided to analyze performance of devices like radar, infrared exploration devices, and a CCD(Charge-Coupled Device). CONSTITUTION: A shooting device(200) for dummy ammunition comprises a foci, a first chamber, a second chamber, a first diaphragm, and a second diaphragm. The first diaphragm bursts by a pressure difference between the first chamber and the second chamber, when a valve is opened and a second gas is compressed inside the second chamber while gas inside the foci, the first chamber, and the second chamber are in equilibrium. The second diaphragm bursts by a pressure difference inside the foci and the second chamber when inserting a first gas into the second chamber after the first diaphragm bursts.
Abstract translation: 目的：提供用于虚拟弹药的拍摄装置，以分析雷达，红外探测装置和CCD（电荷耦合装置）等设备的性能。 构成：用于虚拟弹药的射击装置（200）包括焦点，第一腔室，第二腔室，第一膜片和第二膜片。 当阀门打开并且第二气体在第二腔室内被压缩时，第一隔膜通过第一腔室和第二腔室之间的压力差而爆裂，同时在焦点，第一腔室和第二腔室内的气体处于平衡状态。 第二隔膜在第一隔膜突然之后将第一气体插入第二室时，通过焦点和第二室内的压力差而爆裂。
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公开(公告)号：KR101224861B1
公开(公告)日：2013-01-22
申请号：KR1020120084107
申请日：2012-07-31
Applicant: 국방과학연구소
IPC: G01S13/34
Abstract: PURPOSE: A FMCW radar and an attenuating method for a near distance clutter signal of the FMCW radar are provided to expand a dynamic area of a receiver and to improve a signal to noise ratio. CONSTITUTION: A FMCW radar and an attenuating method for a near distance clutter signal of the FMCW radar comprise the following: A RF transmitter(20) is delivered a signal from a signal generator of a frequency generator(30) and transmits the same to a transmitting antenna. The transmitting antenna transmits an RF detection signal to the outside. An RF receiver(10) RF-converts the reflected signal returning from a target and produces the same to a mixer(35). The mixer mixes the local signal separated from the frequency generator and the reflected signal from the RF receiver and produces an intermediate frequency. An intermediate frequency signal amplifier lowers or amplifies the frequency of the Doppler reflected signal and provides the same to a signal processor(70). The signal processor converts the analog signal passed through the intermediate frequency signal expander to the digital signal and extracts the characteristics of the detected target. [Reference numerals] (10) RF receiver; (20) RF transmitter; (30) Frequency generator; (40) Low band pass filter; (50) Active band stop filter; (60) Gain amplifier; (70) Signal processor; (71) A/D converter; (AA) Intermediate frequency signal amplifier; (BB) Reception signal generator; (CC) Transmission signal generator
Abstract translation: 目的：提供用于FMCW雷达近距离杂波信号的FMCW雷达和衰减方法，以扩展接收机的动态区域并提高信噪比。 规定：FMCW雷达的近距离杂波信号的FMCW雷达和衰减方法包括以下：RF发射机（20）从频率发生器（30）的信号发生器传送信号并将其发送到 发射天线。 发送天线向外部发送RF检测信号。 RF接收器（10）对从目标返回的反射信号进行RF转换，并将其产生到混合器（35）。 混频器将从频率发生器分离的本地信号和来自RF接收机的反射信号混合并产生中频。 中频信号放大器降低或放大多普勒反射信号的频率，并将其提供给信号处理器（70）。 信号处理器将通过中频信号扩展器的模拟信号转换为数字信号，并提取检测到的目标的特性。 （附图标记）（10）RF接收机; （20）射频发射机; （30）频率发生器; （40）低通滤波器; （50）有源带阻滤波器; （60）增益放大器; （70）信号处理器; （71）A / D转换器; （AA）中频信号放大器; （BB）接收信号发生器; （CC）传输信号发生器
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公开(公告)号：KR101223029B1
公开(公告)日：2013-01-21
申请号：KR1020120034332
申请日：2012-04-03
Applicant: 국방과학연구소
Abstract: PURPOSE: An optical alignment device and a radar alignment method using the same are provided to secure the reliability by improving alignment accuracy of a radar. CONSTITUTION: An optical part(100) includes a fixing part(120) fixing telescopes(110,111). A combination part(200) detects an object and confirms location by combining a radar receiving a signal corresponding to an object to the upper surface. A combination part has a directional position variation part(210). A directional position variation part combines the lower face to a radar, and accommodates a fixing part in the upper face with allowing changing direction of the fixed part.
Abstract translation: 目的：提供一种使用其的光学对准装置和雷达对准方法，以通过提高雷达的对准精度来确保可靠性。 构成：光学部件（100）包括固定望远镜（110,111）的固定部分（120）。 组合部件（200）通过将接收到与物体相对应的信号的雷达组合到上表面来检测物体并确认位置。 组合部分具有方向位置变化部分（210）。 方向位置变化部将下表面与雷达组合，并且在上表面容纳固定部件，允许固定部件的改变方向。
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Patent Agency Ranking
公开(公告)号：KR1020110114795A
公开(公告)日：2011-10-20
申请号：KR1020100034127
申请日：2010-04-14
Applicant: 국방과학연구소
Abstract: 본 발명은 주파수 변조 연속파(FMCW) 레이다에서 간섭 제거를 위한 시스템간 동기화 방법에 관한 것으로, (a) 2대의 레이더가 동시에 운용될 경우 간섭유무를 판단하기 위해 시간 영역에서 셀 평균-일정오경보확률(CA-CFAR) 알고리즘을 사용하여, 기준 레이다에 동기를 맞추고자 레이다로부터 동기화 명령이 발생하면, 연속파-선형 주파수 변조(CW-LFM) 파형으로 변경하고, 레이다 신호를 획득하여 레이다에 수신된 신호를 시간 영역 CA-CFAR를 사용하여 간섭 유무를 판단하는 단계; (b) 연속파(CW) 구간에서 간섭이 발생했을 경우, 레이더 시스템간 동기화하는 단계; (c) 주파수 변조(LFM) 구간에서 간섭이 발생했을 경우, 레이더 시스템간 동기화하는 단계; (d) 간섭 발생이 탐지되지 않았을 경우, 동기화하는 단계; 및 (e) 동일한 타입 레이다간 동기화가 완료되면, 파형 발생기를 제어하여 원래 파형으로 복귀하는 단계를 포함한다. 본 발명은 주파수 변조 연속파(FMCW) 신호를 이용한 레이다에서 간섭 신호를 인지하고, 강제 시간 지연 및 주파수 호핑을 통해 장비간 비동기 시간을 계산하여 보정함으로써 레이다 장비간 동기를 맞추고 동기화 작업이 완료되면 전원을 끌 때까지 레이다간 간섭 신호를 제거하며, 장비의 동시 운용성을 높여준다.
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公开(公告)号：KR101908425B1
公开(公告)日：2018-10-16
申请号：KR1020170011201
申请日：2017-01-24
Applicant: 국방과학연구소
Abstract: 본발명에따른레이더시스템의탐지기법은, 탐지대상목표물에대하여주파수대역마다 RCS (Radar Cross Section) 대역별임계값을설정하는 RCS 임계값설정단계; 상기목표물에대하여 RCS 값이상기대역별임계값보다높은주파수대역을상기주파수대역마다선별하는대역별주파수대역선별단계; 상기대역별주파수대역이공통되는범위인공통주파수범위를선별하는공통주파수범위선별단계; 및상기공통주파수범위를다수의레이더에대한복수의운용주파수들을설정하는운용주파수설정단계를포함하고, 다중경로(multipath)에서향상된성능과같은레이더의탐지성능을향상시킬수 있다.
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公开(公告)号：KR101608812B1
公开(公告)日：2016-04-04
申请号：KR1020140139061
申请日：2014-10-15
Applicant: 국방과학연구소
CPC classification number: G02B26/08 , G02B7/00 , G02B26/0816
Abstract: 본발명의협소한공간에적합한 45도반사경광축조향장치에는장치대(40)의내부에서접촉하여구속된운동을하는반사경지지봉(50)과정렬판(20)의체결정도가조절될수 있는 3개의정렬스크류(30), 장치대(40)와반사경지지봉(50)의회전을위해쌍을이루는 V자단면통공(40-1)과회전중심구(53), 반사경지지봉(50)에 45도경사지게구비된반사경(60)이포함됨으로써협소한공간에서수직방향에서올라오는레이저빔의방향을위한광축의미세조절을제한하는공간적제약이해소되고, 특히스프링의탄성변형대신홈을이용한기구적광축조향으로진동과충격과같은외란에도강인함으로써안정적인광축유지가이루어지는특징을갖는다.
Abstract translation: 本发明涉及一种具有适合于有限空间的45度反射镜的光轴转向系统，更具体地说，涉及一种光轴转向系统，该光轴转向系统能够通过精细调节激光束的垂直方向上升的方向 光轴在狭窄的空间。 具有适合于狭窄空间的45度反射镜的光轴转向系统包括：反射器支撑杆（50），通过在装置支架（40）的内部进行接触来执行有限的运动; 能够调整排列板（20）的紧固度的三个排列螺钉（30）; V形横截面通孔（40-1）和旋转中心球（53），用于使装置支架（40）和反射器支撑杆（50）旋转成对; 以及倾斜地安装在反射器支撑杆（50）中45度角的反射器（60）。 因此，该系统解决了限制在窄空间中沿垂直方向上升的激光束的方向的光轴的微调的空间约束。 特别地，该系统使用凹槽代替弹簧的弹性变形来提供机械光轴转向，从而实现稳定的光轴维护，具有抗震动和冲击等干扰的韧性。
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公开(公告)号：KR101223030B1
公开(公告)日：2013-01-17
申请号：KR1020120027636
申请日：2012-03-19
Applicant: 국방과학연구소
Abstract: PURPOSE: An RF signal input device and method are provided to minimize an error resulting from environmental influence and fixture manufacturing and to enable phase alignment between channels of a radar interferometer and gain correction between channels. CONSTITUTION: An RF signal input device(100) for performance verification and correction of a radar interferometer includes an RF signal generator(110), a 1:N signal distribution part(130), multiple phase shifters(140), an adaptor(150) and a control part(180). The RF signal generator generates an RF signal synchronized with a radar interferometer. The 1:N distribution part distributes an RF signal to correspond to the number of reception channels of a radar interferometer by receiving an RF signal synchronized with a radar interferometer. Multiple phase shifters access every output of the 1:N distribution part to adjust the phase of each RF signal output from the 1:N distribution part. An adaptor separately inputs N RF signals output from each phase shifter to N reception channels by accessing N phase shifters with each reception channel of the radar interferometer. A control part controls adjustment of the phase value in the phase shifter to align phase of each RF signal output from the adaptor. [Reference numerals] (110) RF signal generator; (120) Attenuator; (125) Attenuation control part; (130) 1 : N signal distribution part; (140) Phase shifter; (145) Phase control part; (150) Adaptor; (180) Control part; (AA) Radar interferometer
Abstract translation: 目的：提供RF信号输入装置和方法，以最小化由环境影响和夹具制造造成的误差，并使雷达干涉仪的通道之间的相位对准和通道之间的增益校正。 构成：用于雷达干涉仪的性能验证和校正的RF信号输入装置（100）包括RF信号发生器（110），1：N信号分配部分（130），多个移相器（140），适配器（150） ）和控制部（180）。 RF信号发生器产生与雷达干涉仪同步的RF信号。 1：N分配部分通过接收与雷达干涉仪同步的RF信号来分配RF信号以对应于雷达干涉仪的接收信道的数量。 多个移相器访问1：N分配部分的每个输出，以调整从1：N分配部分输出的每个RF信号的相位。 适配器通过与雷达干涉仪的每个接收通道接入N个移相器，将从每个移相器输出的N个RF信号分别输入到N个接收通道。 控制部件控制移相器中相位值的调整，以调整从适配器输出的每个RF信号的相位。 （110）RF信号发生器; （120）衰减器; （125）衰减控制部分; （130）1：N信号分配部分; （140）移相器; （145）相控部分; （150）适配器; （180）控制部分; （AA）雷达干涉仪
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