摘要
宽带成像雷达通常采用窄带跟踪和宽带成像分时交替进行,这样势必造成雷达资源浪费。为了有效利用雷达资源,一旦窄带跟踪到目标后,雷达可以转入宽带一维成像与单脉冲跟踪。研究宽带一维像单脉冲跟踪模型,给出了高速运动目标宽带线性调频信号回波模型,根据该信号是同调频率的多分量信号的特点,将Radon模糊图变换法应用于调频率估计和一维像运动补偿,并给出了宽带一维像的测速、测距和测角模型。一维像的目标连续定位跟踪可以增加目标跟踪数据率,提高宽带雷达对机动目标跟踪能力。仿真结果验证了宽带一维像目标单脉冲跟踪技术的可行性和跟踪精度。
Wideband imaging radar uses narrow band tracking and wideband imaging by turns, which waste radar resource. In order to use radar resource effectively, once the target has been tracked by narrow band signal, the radar can switch to mono-pulse tracking and imaging of wideband signal. Mono-pulse tracking model of wideband imaging radar was studied, and echo signals model of high speed motion target was offered. Based on the characteristic of multi-component LFM echo signals, Radon-ambiguity transform method was used to chirp rate parameter estimation and motion compensation. Angle, distance and velocity measurement models of wideband range profile were proposed. Target orientation and tracking based on range profile could increase data rate of target tracking, which could enhance maneuverable target tracking capability. Simulation results validate the feasibility and tracking precision of mono-pulse wideband range profile tracking.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第15期4732-4735,共4页
Journal of System Simulation
基金
国家自然科学基金项目(60672033)
国防科技大学科研计划项目(JC06-04-01)
关键词
单脉冲测角
宽带一维距离像
测距
运动补偿
参数估计
mono-pulse angle measurement
wideband range profile
distance measurement
motion compensation
parameter estimation
