Abstract:
PURPOSE: A method and device for arraying an active protection system are provided to minimize arraying error by repetitively performing a system arraying process based on a thermal detector when mounting a component of the active protection system. CONSTITUTION: A method for arraying an active protection system comprises: a step of calculating the position of a central point with respect to a first standard target board(S310); a step of driving a launching device and a thermal detector(S320); a step of calculating arraying error of a detecting trace radar(S330); a step of correcting the arraying error; a step of calculating the position of a central point with respect to a second standard target board installed in a second point in which an observing device of the detecting trace radar(S350); a step of checking the arraying error of the launching device based on the position of the central point with respect to the second standard target board transferred in order that the thermal detector aims at the central point(S370); and a step of determining the completion of arraying the system with respect to the active protection system based on the arraying error(S380). [Reference numerals] (AA) Start; (S310) Calculate the position of a central point with respect to a first standard target board; (S320) Drive a launching device and a thermal detector to be oriented to the first standard target board; (S330) Calculate an alignment error of a detecting trace radar based on the position of the central point; (S340) Correct the alignment error of the launching device based on the position of the central point; (S350) Calculate the position of a central point with respect to a second standard target board; (S360) Drive the launching device and the thermal detector to be oriented to the second standard target board; (S370) Check an alignment error of the launching device based on the position of the central point; (S380) Determine the completion of aligning an active protection system
Abstract:
PURPOSE: An image processing method and an apparatus thereof are provided to reduce coupling between a range direction variable and an azimuthal direction variable although the method is applied to a system requiring ultra wideband as a frequency band. CONSTITUTION: An image processing method includes the following steps of: generating dechirped data through the process of dechirping reflecting electromagnetic waves (S10); removing a phase component considering the distance between a target and an antenna from the dechirped data (S20); and processing a block signal about the data whose phase component is removed regarding a predetermined block area. The block signal process includes the following steps. The data is processed by Bulk RCMC (Range Cell Migration Correction) (S30). The data which is processed by the Bulk RCMC is converted from the distance-time domain to the distance-frequency domain (S40). The data in the distance-frequency domain is processed by azimuth deramping within a predetermined distance-frequency range (S50). CZT (Chirp ZTransform) is applied to the data processed by the azimuth deramping within a predetermined azimuth-frequency range (S60). [Reference numerals] (AA) Start; (BB) Start block process; (CC) Start AZIMUTH DERAMPING per each distance- frequency; (DD) Is it the end of distance-frequency ?; (EE,HH) No; (FF,JJ) Yes; (GG) Insert calculated result to each block; (II) Is this the end of block process?; (KK) End; (S10) Receive dechirped data; (S21) Distance direction FFT; (S22) Remove target phase distance; (S23) Distance direction IFFT; (S40) Determine distance direction FFT and the range of distance-frequency
Abstract:
PURPOSE: An image processing method and device are provided to perform image processing about data, which is received by mono-static radar, with high speed by using a scaling function. CONSTITUTION: A signal processing unit receives dechirped data from a data conversion unit(S10). The signal processing unit converts an azimuth time domain into an azimuth frequency domain of the dechirped data(S20). The signal processing unit performs bulk RCMC(Range Cell Migration Correction) and SRC(Secondary Range Compression) for the center of a radar measurement point of a distance time domain by using a scaling function calculated for the converted data(S30,S40). [Reference numerals] (AA) Start; (BB) End; (S10) Receive dechirped data; (S20) First conversion; (S50) Second conversion; (S70) Third conversion; (S80) Image formation
Abstract:
PURPOSE: A method and a device for aligning a system of an active destruction system are provided to minimize alignment error by repetitively performing a system aligning process based on a lacerated detection tracer when components of the active destruction system are mounted on a platform. CONSTITUTION: A method for aligning a system of an active destruction system comprises: a step of aligning a gun barrel based on a standard target board(S310); a step of calculating pitch alignment error based on a real observation point of a reference point of the standard target board, a detection tracking radar, a lacerated detection tracer, or a launcher(S320); a step of calculating alignment error of the detection tracking radar of the active destruction system, the lacerated detection tracer, or the launcher based on the pitch alignment error(S330); a step of realigning the detection tracking radar, the lacerated detection tracer, or the launcher for aiming to the standard target board and rotating a turret by reverse rotating in an arbitrary angle(S340); and a step of calculating roll aligning error based on a new reference point of the detection tracking radar, the lacerated detection tracer, or the launcher of the active destruction system(S350). [Reference numerals] (S310) Align a gun barrel based on a standard target board; (S320) Calculate a pitch alignment error based on actual observation points and reference points of components; (S330) Calculate a yaw alignment error based on the pitch alignment error; (S340) Rotate a turret to the forward direction and realign the components to be directed to the standard target board; (S350) Calculate a roll alignment error based on the reference points and new reference points of the realigned components
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:
본 발명은 전방관측 3차원 영상 레이더 장치 및 그를 이용한 3차원 영상 획득방법에 관한 것이다. 본 발명의 전방관측 3차원 영상 레이더 장치는, 전방에 있는 물체의 관측을 위해 방사될 RF 신호를 생성하는 송신부; 송신부에 의해 생성된 RF 신호를 외부로 방사하는 송신 안테나; 송신 안테나로부터 방사된 신호에 대해 전방의 물체로부터 반사된 신호를 수신하는 수신 안테나; 수신 안테나를 통해 수신된 신호(아날로그 신호)와 상기 송신부로부터의 송신신호를 혼합하여 디지털 신호로 변환하는 수신부; 및 송신부와 수신부의 동작을 제어하고, 송신부가 RF 신호를 생성하도록 하는 명령을 송출하며, 상기 수신부에 의해 변환된 디지털 신호를 입력받아 전방 물체에 대한 위상 정보를 추출하고, 간섭계 원리를 이용하여 고도정보를 생성하여 3차원 레이더 영상을 생성하는 신호처리부를 포함한다. 이와 같은 본 발명에 의하면, 레이더 전방에 대해 고도정보를 포함한 3차원 영상을 얻을 수 있고, 수신안테나 별로 수신기를 독립적으로 적용하여 송?수신기를 구현함으로써 수신기에 대한 지연소자 적용의 어려움을 극복할 수 있으며, 레이더 영상을 실시간으로 고속처리할 수 있다.
Abstract:
PURPOSE: A front observation 3D image radar apparatus and a 3D image acquiring method using the same are provided to form a transmitter/receiver by independently applying a receiver according to a receiving antenna. CONSTITUTION: A transmission unit(110) creates a radio frequency signal which is emitted for the observation of a front object. Transmission antennas(120a,120b) radiate the radio frequency signal which is created by the transmission unit to outside. A receiving antenna receives a signal which is reflected from the front object about the signal which is emitted from the transmission antenna. A receiver(140) forms a digital signal by mixing the signal which is emitted from the transmission antenna and a transmission signal from the transmission unit. A signal processing unit(150) controls an operation of the transmission unit and the receiver. The signal processing unit extracts phase information about the front object from the digital signal. The signal processing unit creates advanced information and a three-dimensional radar image.
Abstract:
PURPOSE: An apparatus and method for suppressing radar interference signal using transmission synchronization, and computer readable medium recording program for performing the method are provided to suppress the interference between pulses when directly receiving radar pulse. CONSTITUTION: A transceiving section setup unit(330) divides radar pulse transmitting section and a radar pulse receiving section according to a preset time. A transmission synchronizing unit(340) synchronizes a radar pulse transmitting timing with a radar pulse receiving zone to suppress the interference of the pulses from the vehicle radar systems.