This paper proposed a robust method based on the definition of Mahalanobis distance to track ground moving target. The feature and the geometry of airborne ground moving target tracking systems are studied at first. B...This paper proposed a robust method based on the definition of Mahalanobis distance to track ground moving target. The feature and the geometry of airborne ground moving target tracking systems are studied at first. Based on this feature, the assignment relation of time-nearby target is calculated via Mahalanobis distance, and then the corresponding transformation formula is deduced. The simulation results show the correctness and effectiveness of the proposed method.展开更多
We propose a ground moving target detection method for dual-channel Wide Area Surveillance(WAS) radar based on Compressed Sensing(CS).Firstly,the method of moving target detection of the WAS radar is studied.In order ...We propose a ground moving target detection method for dual-channel Wide Area Surveillance(WAS) radar based on Compressed Sensing(CS).Firstly,the method of moving target detection of the WAS radar is studied.In order to reduce the sample data quantity of the radar,the echo data is randomly sampled in the azimuth direction,then,the matched filter is used to perform the range direction focus.We can use the compressive sensing theory to recover the signal in the Doppler domain.At last,the phase difference between the two channels is compensated to suppress the clutter.The result of the simulated data verifies the effectiveness of the proposed method.展开更多
被动成像广域空中监视(Wide Area Airborne Surveillance,WAAS)系统因其良好的隐蔽性和动态监视的实时性、持久性及大面积覆盖,已成为情报监视侦察的重要工具,广泛应用于军事、民用领域。文章结合典型被动成像广域空中监视系统(如自动...被动成像广域空中监视(Wide Area Airborne Surveillance,WAAS)系统因其良好的隐蔽性和动态监视的实时性、持久性及大面积覆盖,已成为情报监视侦察的重要工具,广泛应用于军事、民用领域。文章结合典型被动成像广域空中监视系统(如自动实时地面全部署侦察成像系统ARGUS-IS)的特点,从光电传感器设计、数据传输与信息处理等方面阐述被动成像WAAS的系统特点及关键技术环节;重点分析了大视场高分辨率的实现方式、海量数据传输与存储、数据智能分析等制约被动成像WAAS性能的瓶颈技术,为被动成像WAAS的研制与应用提供了参考。展开更多
由于可以在较短时间内对大范围区域进行动目标监视,广域监视动目标检测(Wide Area Surveillance,WAS-GMTI)模式已经成为机载监视雷达的一种重要工作模式。目前具备WAS-GMTI工作模式的系统较少,实际数据较难获得,严重影响了对WAS-GMTI中...由于可以在较短时间内对大范围区域进行动目标监视,广域监视动目标检测(Wide Area Surveillance,WAS-GMTI)模式已经成为机载监视雷达的一种重要工作模式。目前具备WAS-GMTI工作模式的系统较少,实际数据较难获得,严重影响了对WAS-GMTI中相关处理算法的验证。该文提出一种基于电子地图路网信息的WAS-GMTI动目标点迹仿真方法。该方法根据载机和电子地图路网信息直接产生动目标信息,避免了仿真场景回波所需的大量运算,而且产生的动目标信息可以合理地融合到真实地理环境中。此外,联合对同一动目标的多次观测信息,该文还给出了一种动目标的轨迹关联方法。仿真结果验证了该文所提方法的有效性。展开更多
机载广域侦察监视(Wide Area Airborne Surveillance,WAAS)系统因其具有良好的隐蔽性和动态实时性、高分辨率及宽覆盖范围等特性,已成情报侦察监视(ISR)的重要手段和世界各国重点发展的航空装备。本文对当前机载广域侦察监视系统装备发...机载广域侦察监视(Wide Area Airborne Surveillance,WAAS)系统因其具有良好的隐蔽性和动态实时性、高分辨率及宽覆盖范围等特性,已成情报侦察监视(ISR)的重要手段和世界各国重点发展的航空装备。本文对当前机载广域侦察监视系统装备发展情况进行了介绍,结合国外典型广域侦察监视系统技术,对一种基于稳定平台摆扫步进凝视(Step-Stare)成像的广域侦察监视系统进行了关键技术设计论证,为机载广域侦察监视系统研制与应用提供参考。展开更多
基金Supported by the National Natural Science Foundation of China Youth Science Fund Project(Nos.62101405,61372185)
文摘This paper proposed a robust method based on the definition of Mahalanobis distance to track ground moving target. The feature and the geometry of airborne ground moving target tracking systems are studied at first. Based on this feature, the assignment relation of time-nearby target is calculated via Mahalanobis distance, and then the corresponding transformation formula is deduced. The simulation results show the correctness and effectiveness of the proposed method.
文摘We propose a ground moving target detection method for dual-channel Wide Area Surveillance(WAS) radar based on Compressed Sensing(CS).Firstly,the method of moving target detection of the WAS radar is studied.In order to reduce the sample data quantity of the radar,the echo data is randomly sampled in the azimuth direction,then,the matched filter is used to perform the range direction focus.We can use the compressive sensing theory to recover the signal in the Doppler domain.At last,the phase difference between the two channels is compensated to suppress the clutter.The result of the simulated data verifies the effectiveness of the proposed method.
文摘被动成像广域空中监视(Wide Area Airborne Surveillance,WAAS)系统因其良好的隐蔽性和动态监视的实时性、持久性及大面积覆盖,已成为情报监视侦察的重要工具,广泛应用于军事、民用领域。文章结合典型被动成像广域空中监视系统(如自动实时地面全部署侦察成像系统ARGUS-IS)的特点,从光电传感器设计、数据传输与信息处理等方面阐述被动成像WAAS的系统特点及关键技术环节;重点分析了大视场高分辨率的实现方式、海量数据传输与存储、数据智能分析等制约被动成像WAAS性能的瓶颈技术,为被动成像WAAS的研制与应用提供了参考。
基金General Program of National Natural Science Foundation of China(61501231)Jiangsu Provincial Natural Science Foundation(BK20150759)Aeronautical Science Foundation of China(20152052027)
文摘由于可以在较短时间内对大范围区域进行动目标监视,广域监视动目标检测(Wide Area Surveillance,WAS-GMTI)模式已经成为机载监视雷达的一种重要工作模式。目前具备WAS-GMTI工作模式的系统较少,实际数据较难获得,严重影响了对WAS-GMTI中相关处理算法的验证。该文提出一种基于电子地图路网信息的WAS-GMTI动目标点迹仿真方法。该方法根据载机和电子地图路网信息直接产生动目标信息,避免了仿真场景回波所需的大量运算,而且产生的动目标信息可以合理地融合到真实地理环境中。此外,联合对同一动目标的多次观测信息,该文还给出了一种动目标的轨迹关联方法。仿真结果验证了该文所提方法的有效性。
文摘机载广域侦察监视(Wide Area Airborne Surveillance,WAAS)系统因其具有良好的隐蔽性和动态实时性、高分辨率及宽覆盖范围等特性,已成情报侦察监视(ISR)的重要手段和世界各国重点发展的航空装备。本文对当前机载广域侦察监视系统装备发展情况进行了介绍,结合国外典型广域侦察监视系统技术,对一种基于稳定平台摆扫步进凝视(Step-Stare)成像的广域侦察监视系统进行了关键技术设计论证,为机载广域侦察监视系统研制与应用提供参考。