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公开(公告)号：KR102165835B1
公开(公告)日：2020-10-14
申请号：KR1020190176887
申请日：2019-12-27
Applicant: 국방과학연구소 , 한양대학교 산학협력단
IPC: H04B7/0408 , H04B7/06 , H04B7/08 , G01S5/02 , H04B7/26
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公开(公告)号：KR1020170117805A
公开(公告)日：2017-10-24
申请号：KR1020160045706
申请日：2016-04-14
Applicant: 국방과학연구소
Abstract: 본발명에따른 2-단계 TDOA 및 FDOA 정보추출방법은, 두개 이상의안테나를이용하여신호를수신하고추렴및 보간법을수행하여중앙처리장치로전송하는신호수신/처리/전송단계; 및최적연산량을위한최적샘플링주파수를연산하고전송된수신신호의주파수를최적샘플링주파수로변경하는최적샘플링주파수변경단계를포함하고, 전송효율을극대화하고정밀한추정값을획득하면서도연산량을획기적으로감소시킬수 있다.
Abstract translation: 两步骤TDOA和FDOA信息提取方法，根据本发明，通过接收使用两个或多个天线的信号，并进行内插churyeom和信号接收/发送到中央处理单元的处理/发送步骤; 和包括最佳采样频率改变改变所述接收到的操作的频率，以最佳采样频率为最佳操作量的步骤和将信号发送到最佳采样频率，和显著一个sikilsu减少了计算量，同时还可以提高传输效率和获得精确的估计值 。
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公开(公告)号：KR1020120088425A
公开(公告)日：2012-08-08
申请号：KR1020110009775
申请日：2011-01-31
Applicant: 국방과학연구소
Abstract: PURPOSE: A device for estimating an encoding type of voice compression streams in wireless communication and a method thereof are provided to analyze only voice compression streams without prior information about an encoding type of an encoder for received voice compression streams, thereby estimating the encoding type. CONSTITUTION: A receiving unit(11) receives voice compression streams which are encoded by a specific encoding type. A determining unit(12) estimates an encoding type of the voice compression streams based on the length of an obtained frame and correlation per each bit location by applying an MAFD(Mean Absolute Frame Difference) to the voice compression streams. The determining unit selects a decoder corresponding to the estimated encoding type from decoders. The determining unit distinguishes whether the encoding type is based on a frame based on the length of an estimated frame and correlation per a bit location of the voice compression streams.
Abstract translation: 目的：提供一种用于估计无线通信中的语音压缩流的编码类型的装置及其方法，用于仅分析语音压缩流，而无需关于用于接收到的语音压缩流的编码器的编码类型的先前信息，从而估计编码类型。 构成：接收单元（11）接收由特定编码类型编码的语音压缩流。 确定单元（12）通过对语音压缩流应用MAFD（平均绝对帧差）来基于获得的帧的长度和每个比特位置的相关性来估计语音压缩流的编码类型。 确定单元从解码器中选择对应于估计的编码类型的解码器。 确定单元基于估计帧的长度和语音压缩流的每位位置的相关性来区分编码类型是否基于帧。
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公开(公告)号：KR1020030090887A
公开(公告)日：2003-12-01
申请号：KR1020020028491
申请日：2002-05-22
Applicant: 국방과학연구소
IPC: G01S3/14
Abstract: PURPOSE: An apparatus for reducing errors of a direction finder is provided to determine an optimum azimuth value by using the probability distribution of a phase difference. CONSTITUTION: An apparatus for reducing errors of a direction finder includes a plurality of phase channel correction unit(12A,12B), a phase center correction logic unit(13A,13B), a calculation correction unit(14A,14B), and a comparison logic portion(15). The phase channel correction unit(12A,12B) obtains phase correction functions of a receiver to reduce errors between receiving channels. The phase center correction logic unit(13A,13B) corrects input phases on the basis of the phase correction functions and outputs a phase difference. The calculation correction unit(14A,14B) outputs values of azimuth of correction tables according to the phase difference and frequencies. The comparison logic portion(15) outputs selectively the azimuth value approaching the predetermined azimuth value by selecting one of the outputs of the calculation correction unit(14A,14B).
Abstract translation: 目的：提供一种用于减少取向器误差的装置，通过使用相位差的概率分布来确定最佳方位值。 构成：用于减少取向器误差的装置包括多个相位通道校正单元（12A，12B），相位中心校正逻辑单元（13A，13B），计算校正单元（14A，14B）和比较 逻辑部分（15）。 相位通道校正单元（12A，12B）获得接收器的相位校正功能，以减少接收通道之间的误差。 相位校正逻辑单元（13A，13B）基于相位校正功能校正输入相位并输出相位差。 计算校正单元（14A，14B）根据相位差和频率输出校正表的方位角值。 比较逻辑部分（15）通过选择计算校正单元（14A，14B）的输出之一来选择性地输出接近预定方位值的方位角值。
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Patent Agency Ranking
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公开(公告)号：KR101689628B1
公开(公告)日：2016-12-26
申请号：KR1020150108274
申请日：2015-07-30
Applicant: 국방과학연구소
IPC: G01S1/02
Abstract: 본발명은본 발명은이동수신기환경에서고정신호원의위치를추정할수 있는장치및 방법에관한것이다. 본발명의일 실시예에따른고정신호원의위치추정장치는, 고정신호원으로부터신호를수신하는제1 이동수신기및 제2 이동수신기에대한 TDOA(time difference of arrival) 값에근거하여, DOA(direction of arrival)의후보값인 DOA과 DOA를산출하는 DOA 산출부; 상기산출한 DOA및 DOA값과상기제1 이동수신기및 제2 이동수신기의수신감도에의한최대위치추정범위에근거하여, 상기고정신호원의초기위치값인 x(1) 및 x(2)를산출하는초기위치산출부; 상기산출한 x(1) 및 x(2), 연속적인시간에따라측정되는 TDOA, FDOA(frequency difference of arrival), DOA과 DOA의값을비선형최소자승법에적용하여, 상기고정신호원의위치추정값인 x(1) 및 x(2), 상기각각의위치추정값에대응되는잔차(residual)의절대값인 g(1) 및 g(2)를산출하는위치추정부; 및상기산출한 g(1) 및 g(2)의값에근거하여, 상기 x(1) 및 x(2) 중하나를상기고정신호원의위치로산출하는위치산출부;를포함한다.
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公开(公告)号：KR100761993B1
公开(公告)日：2007-10-02
申请号：KR1020060046288
申请日：2006-05-23
Applicant: 국방과학연구소
IPC: G01S13/36
Abstract: A direction finding array antenna simulator is provided to extend an application range by simulating a direction finding array antenna through a simple structure change. A direction finding array antenna simulator includes a first divider(111), a second divider(121), n variable phase shifters(122-1,122-n), n mixers(112-1,112-n), n low pass filters(113-1,113-n) and a phase difference detector(140). The first divider(111) divides an RF(Radio Frequency) signal into n signals. The second divider(121) divides a local oscillation signal into n signals. The n variable phase shifters(122-1,122-n) vary phases by being operated in a narrow band for the n divided oscillation signals. The n mixers(112-1,112-n) perform the frequency transform of the n divided RF signals based on the n phase varied oscillation signals. The n low pass filters(113-1,113-n) cut off the specific band for the n frequency-transformed signals. The phase difference detector(140) detects the phase difference of output signals of the low pass filters(113-1,113-n). The n variable phase shifters(122-1,122-n) are operated in a wide band by maintaining the phase difference of the local oscillation signal to the phase difference of an intermediate frequency, and simulate a phase array direction finding antenna of a linear shape, a circular shape or a planar shape.
Abstract translation: 提供方向发现阵列天线模拟器，通过简单的结构变化模拟方向发现阵列天线来扩展应用范围。 方向发现阵列天线模拟器包括第一分频器（111），第二分频器（121），n个可变移相器（122-1,122-n），n个混频器（112-1,112-n），n个低通滤波器 1,113-n）和相位差检测器（140）。 第一分频器（111）将RF（射频）信号分成n个信号。 第二分频器（121）将本地振荡信号分成n个信号。 n个可变移相器（122-1,122-n）通过在n个分频振荡信号的窄带中操作来改变相位。 n混频器（112-1,112-n）基于n相变化的振荡信号执行n个分频RF信号的频率变换。 n个低通滤波器（113-1,113-n）切断n个频率变换信号的特定频带。 相位差检测器（140）检测低通滤波器（113-1,113-n）的输出信号的相位差。 n个可变移相器（122-1,122-n）通过将本地振荡信号的相位差保持为中间频率的相位差而在宽带中工作，并且模拟线性形状的相位阵列测向天线， 圆形或平面形状。
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公开(公告)号：KR100446452B1
公开(公告)日：2004-09-01
申请号：KR1020020028491
申请日：2002-05-22
Applicant: 국방과학연구소
IPC: G01S3/14
Abstract: PURPOSE: An apparatus for reducing errors of a direction finder is provided to determine an optimum azimuth value by using the probability distribution of a phase difference. CONSTITUTION: An apparatus for reducing errors of a direction finder includes a plurality of phase channel correction unit(12A,12B), a phase center correction logic unit(13A,13B), a calculation correction unit(14A,14B), and a comparison logic portion(15). The phase channel correction unit(12A,12B) obtains phase correction functions of a receiver to reduce errors between receiving channels. The phase center correction logic unit(13A,13B) corrects input phases on the basis of the phase correction functions and outputs a phase difference. The calculation correction unit(14A,14B) outputs values of azimuth of correction tables according to the phase difference and frequencies. The comparison logic portion(15) outputs selectively the azimuth value approaching the predetermined azimuth value by selecting one of the outputs of the calculation correction unit(14A,14B).
Abstract translation: 目的：提供一种用于减小测向器的误差的设备，以通过使用相位差的概率分布来确定最佳方位角值。 用于减小测向器误差的装置包括多个相位通道校正单元（12A，12B），相位中心校正逻辑单元（13A，13B），计算校正单元（14A，14B）和比较器 逻辑部分（15）。 相位信道校正单元（12A，12B）获得接收器的相位校正功能以减少接收信道之间的误差。 相位中心校正逻辑单元（13A，13B）基于相位校正函数校正输入相位并输出相位差。 计算校正单元（14A，14B）根据相位差和频率输出校正表的方位角的值。 比较逻辑部分（15）通过选择计算校正单元（14A，14B）的输出之一选择性地输出接近预定方位值的方位值。
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