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公开(公告)号：KR101249823B1
公开(公告)日：2013-04-03
申请号：KR1020120132858
申请日：2012-11-22
Applicant: 국방과학연구소
Abstract: PURPOSE: A radar apparatus for measuring reflective characteristics of the earth surface and the sea surface and a measuring method using the same are provided to accurately measure the cross-sectional area, distance, relative velocity, beat frequency and doppler frequency and measure the reflective characteristics of the earth surface and the sea surface more accurately by generating an offset frequency in a transmission path, avoiding low frequency noise existing in the low frequency band and minimizing the phase noise, thereby implementing the advantages of FMCW(Frequency Modulated Continuous Wave) and the doppler radar. CONSTITUTION: A radar apparatus(10) for measuring reflective characteristics of the earth surface and the sea surface includes a transceiver(30), an intermediate frequency unit(40), a signal processing unit(50) and a signal process unit(100). The transceiver transmits a transmission signal through an antenna unit(20) by selectively performing frequency modulation and deviating the frequency as much as the offset frequency and receiving feedback signals reflected at a clutter through the antenna unit. The intermediate frequency unit(40) removes the noise by filtering for sensitive improvement of an output signal inputted from the transceiver and amplifies the output signal into a level which allows signal processing. The signal processing unit analyzes the beat frequency and doppler frequency through the signal processing of the output signal inputted from the intermediate frequency unit using FFT(Fast Fourier Transform). The signal process unit includes a control unit(60) receiving a calculation order of an operator, a calculating unit(70) performing necessary calculation according to the calculation order of the operator, an input and output unit(80) receiving the input of the calculation order of the operator and displaying the calculation result. The signal process unit receives the input of the output signals from the signal processing unit, calculates the radar cross-sectional area, provides the calculation result to the operator and relative velocity, and selectively performs frequency modulation by the operator. [Reference numerals] (20) Antenna unit; (30) Transceiver; (40) Intermediate frequency unit; (50) Signal processing unit; (60) Control unit; (70) Calculating unit; (80) Input and output unit;
Abstract translation: 目的：提供一种用于测量地表和海面反射特性的雷达装置及其测量方法，以精确测量横截面积，距离，相对速度，拍频和多普勒频率，并测量反射特性 通过在传输路径中产生偏移频率，更精确地测量地表和海面，避免存在于低频带中的低频噪声并使相位噪声最小化，从而实现FMCW（调频连续波）和 多普勒雷达 构成：用于测量地表和海面的反射特性的雷达装置（10）包括收发器（30），中频单元（40），信号处理单元（50）和信号处理单元（100） 。 收发器通过天线单元（20）通过选择性地执行频率调制并使频率偏离偏移频率并且接收通过天线单元在杂波反射的反馈信号来发射发射信号。 中频单元（40）通过对从收发器输入的输出信号的敏感改善进行滤波来去除噪声，并将输出信号放大到允许信号处理的电平。 信号处理单元通过使用FFT（快速傅里叶变换）从中频单元输入的输出信号的信号处理来分析拍频和多普勒频率。 信号处理单元包括接收操作者的计算顺序的控制单元（60），根据操作者的计算顺序执行必要的计算的计算单元（70），接收输入的输入和输出单元 运算符的计算顺序并显示计算结果。 信号处理单元接收来自信号处理单元的输出信号的输入，计算雷达横截面积，向操作者提供计算结果和相对速度，并且由操作者选择性地执行频率调制。 （附图标记）（20）天线单元; （30）收发器; （40）中频单位; （50）信号处理单元; （60）控制单元; （70）计算单位; （80）输入输出单元;
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公开(公告)号：KR101659865B1
公开(公告)日：2016-09-26
申请号：KR1020160051012
申请日：2016-04-26
Applicant: 국방과학연구소
CPC classification number: G01S7/36 , G01S13/882 , G01S7/021
Abstract: 본발명은고도측정시, 오차발생을최소화하기위한장치및 그방법에관한것으로, 전파를외부(지면또는표적)로송신하거나, 상기외부로부터주파수신호를수신하는신호부및 상기신호부로부터수신한노이즈신호에근거하여, 재밍발생여부를판단하고, 상기판단결과재밍이발생한경우, 복수의재밍회피알고리즘중 고도측정센서로부터탐지된현재고도에근거하여, 적어도하나의재밍회피알고리즘을순차적으로또는동시에수행하여, 상기재밍을회피하는처리부를포함한다.
Abstract translation: 本发明涉及一种用于最小化高度测量中的错误发生的装置及其方法。 根据本发明，高度测量传感器的干扰逃避装置包括：向外部（土壤或目标）发送无线电信号并从外部接收频率信号的信号单元; 以及处理单元，基于从信号单元接收到的噪声信号来确定是否发生卡纸，并且基于从高度测量传感器检测到的当前高度逐渐地或同时地执行多个干扰逃避算法中的至少一个干扰逃避算法， 作为确定的结果，在发生卡纸的情况下避免卡住。
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公开(公告)号：KR101298621B1
公开(公告)日：2013-08-26
申请号：KR1020130029226
申请日：2013-03-19
Applicant: 국방과학연구소
CPC classification number: H03L7/183 , G06F1/0321 , H03L7/06 , H03L7/08
Abstract: PURPOSE: A frequency-modulated continuous-wave (FMCW) frequency synthesizer and a control method thereof are provided to reduce a multiple ratio of overall frequency and reduce phase noises of high frequency with a small expense. CONSTITUTION: An FMCW frequency synthesizer comprises a voltage control oscillator (150), a first frequency demuliplier (160), a frequency mixer (170), and a second frequency demultiplier (180). The voltage control oscillator controls an output frequency of a voltage and outputs a frequency adjusted final signal. The first frequency demultiplier demultiplies frequency of the final signal to output a demultiplied first signal. The frequency mixer receives the demultiplied first signal from the first frequency demultiplier and a clock signal from a clock signal generator, generates a signal by mixing frequencies of the demultiplied first signal and the clock signal and outputs the generated signal. The second frequency demultiplier connects the frequency mixer with a phase detector, demultiplies a signal output from the frequency mixer, and outputs the demultiplied second signal as a feedback signal to the phase detector.
Abstract translation: 目的：提供一种频率调制连续波（FMCW）频率合成器及其控制方法，以降低总频率的多重比例，并以较小的费用降低高频相位噪声。 构成：FMCW频率合成器包括电压控制振荡器（150），第一频率分布器（160），混频器（170）和第二分频器（180）。 电压控制振荡器控制电压的输出频率并输出频率调整后的最终信号。 第一分频器对最终信号的频率进行分频，以输出分频的第一信号。 混频器从第一分频器接收去除的第一信号和来自时钟信号发生器的时钟信号，通过混合分频的第一信号和时钟信号的频率来产生信号，并输出产生的信号。 第二分频器将混频器与相位检测器连接，对从混频器输出的信号进行分频，并将去除的第二信号作为反馈信号输出到相位检测器。
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Patent Agency Ranking
公开(公告)号：KR100661748B1
公开(公告)日：2006-12-27
申请号：KR1020040086829
申请日：2004-10-28
Applicant: 국방과학연구소
IPC: G01S13/00
Abstract: 본 발명은 단일안테나를 사용한 FMCW 레이더의 누설신호 제거장치에 관한 것으로, FMCW 레이더의 송수신장치에서 구형도파관을 이용하여 국부발진신호에 대한 경로 길이와 누설송신신호에 대한 경로 길이를 일치시키고, 중간주파수회로부에 잡음을 형성하는 누설송신신호에 의한 비트신호를 제거하는 고역통과여파기 및 노치여파기를 구성함으로써 단일안테나를 사용하여 감도가 우수한 FMCW 레이더를 구현할 수 있는 효과가 있다.
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公开(公告)号：KR101926996B1
公开(公告)日：2018-12-07
申请号：KR1020170148791
申请日：2017-11-09
Applicant: 국방과학연구소
Abstract: 본 발명은 RF신호를 생성하여 송신하고 목표물에서 반사된 신호를 수신하는 RF 송수신기, 상기 RF신호를 방사하는 안테나, 상기 목표물과의 충격에 의해 신호를 발생하는 충격센서, 상기 RF 송수신기를 통해 수신한 신호로 상기 목표물과의 거리 및 충돌 예상시간을 계산하는 신호처리기, 출력신호를 수신하여 기폭하는 기폭장치를 포함하며 상기 RF 송수신기에서 취득한 신호가 유효성 기준을 만족하지 못할 경우, 직전 신호를 적용하여 상기 출력신호를 산출 및 송신하는 것을 특징으로 하는 초근접 거리감지 전파형 근접신관 및 그 기폭 방법에 관한 것이다.
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