公开(公告)号：KR101252485B1

公开(公告)日：2013-04-09

申请号：KR1020120111877

申请日：2012-10-09

Applicant: 국방과학연구소

Inventor： 하종수 ,  박규철 ,  선선구 ,  이정수 ,  조병래

IPC: G01S13/89

Abstract: PURPOSE: A high-speed image formation method and a high-speed image formation device for a bistatic radar are provided to increase an image processing speed without degrading the image quality of a radar by transceiving electromagnetic waves through a bistatic technique and by performing a dechirping process. CONSTITUTION: A signal processing unit receives dechirped data Sr{ta, te} from a data conversion unit(S110) and performs a fast Fourier transform on the dechirped data in the azimuthal direction(S120). RCMC(Range Cell Migration Correction) is performed for compensating for the difference of a distance cell from the center of a radar observation point in a distance-time domain using a frequency scaling function for the converted Sr{fa, te}(S130), and SRC(Secondary Range Compression) is performed for additional compression(S140). Afterward, the signal processing unit performs a fast Fourier transformation on the data completed with the RCMC and the SRC in the distance direction(S150), and performs the azimuthal angle scaling on the converted data into a distance-frequency domain using a frequency scaling function(S160). Finally, the signal processing unit performs an inverse fast Fourier transformation on the azimuthal angle scaled data in the azimuthal direction(S170).

Abstract translation: 目的：提供一种用于双基地雷达的高速图像形成方法和高速图像形成装置，以通过双基地技术收发电磁波来降低图像处理速度而不降低雷达的图像质量，并且通过执行取消 处理。 构成：信号处理部从数据变换部（S110）接收去信号数据Sr {ta，te}，对方位角方向的取消信号进行快速傅立叶变换（S120）。 执行RCMC（范围单元迁移校正），以使用用于转换的Sr {fa，te}（S130）的频率缩放函数来补偿距离单元与距雷达观测点的中心的距离的距离， 并执行SRC（二次范围压缩）以进行附加压缩（S140）。 之后，信号处理单元对在距离方向上的RCMC和SRC完成的数据进行快速傅里叶变换（S150），并使用频率缩放函数对转换的数据进行距离频域的方位角缩放 （S160）。 最后，信号处理单元对方位方向的方位角缩放数据进行快速傅立叶逆变换（S170）。

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

Inventor： 조병래 ,  이종민 ,  선선구 ,  이정수 ,  이복형 ,  김경민

IPC: G01S13/82 ,  G01S1/68

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

公开(公告)号：KR100785054B1

公开(公告)日：2007-12-12

申请号：KR1020060088260

申请日：2006-09-12

Applicant: 국방과학연구소

Inventor： 박규철 ,  이정수

IPC: G01S7/40

Abstract: A method and an apparatus for suppressing a frequency intervention between adjacent channels of a radar are provided to improve the directionality of the radar by restricting a bandwidth of a transmitted pulse. A pulse generator(100) generates a pulse signal and includes first and second filters, a switching unit and a mixer. The first filter(10) filters out an output signal from a frequency synthesizer and removes noises from the output signal. The switching unit(20) is periodically turned on/off and generates a pulse from a pulse Doppler radar. The second filter(30) filters out an intermediate frequency, and the intermediate frequency and a local frequency are inputted to the mixer(40). A pulse shaping circuit(50) receives up-converted pulse signals and adjusts a bandwidth of the pulse signal, such that frequency interference is suppressed between adjusts channels.

Abstract translation: 提供了用于抑制雷达的相邻信道之间的频率干预的方法和装置，以通过限制所发射的脉冲的带宽来改善雷达的方向性。 脉冲发生器（100）生成脉冲信号并包括第一和第二滤波器，开关单元和混频器。 第一滤波器（10）滤除来自频率合成器的输出信号并从输出信号中去除噪声。 切换单元（20）周期性地打开/关闭，并从脉冲多普勒雷达产生脉冲。 第二滤波器（30）滤除中频，将中频和本地频率输入到混频器（40）。 脉冲整形电路（50）接收上变频脉冲信号并调节脉冲信号的带宽，从而在调节通道之间抑制频率干扰。