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

Inventor： 조병래 ,  이종민 ,  선선구 ,  이정수 ,  하성재

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