Missile-borne short-range infrared detection(SIRD)technology is commonly used in military ground target detection.In complex battlefield environments,achieving precise strike on ground target is a challenging task.How...Missile-borne short-range infrared detection(SIRD)technology is commonly used in military ground target detection.In complex battlefield environments,achieving precise strike on ground target is a challenging task.However,real battlefield data is limited,and equivalent experiments are costly.Currently,there is a lack of comprehensive physical modeling and numerical simulation methods for SIRD.To this end,this study proposes a SIRD simulation framework incorporating full-link physical response,which is integrated through the radiative transfer layer,the sensor response layer,and the model-driven layer.In the radiative transfer layer,a coupled dynamic detection model is established to describe the external optical channel response of the SIRD system by combining the infrared radiation model and the geometric measurement model.In the sensor response layer,considering photoelectric conversion and signal processing,the internal signal response model of the SIRD system is established by a hybrid mode of parametric modeling and analog circuit analysis.In the model-driven layer,a cosimulation application based on a three-dimensional virtual environment is proposed to drive the full-link physical model,and a parallel ray tracing method is employed for real-time synchronous simulation.The proposed simulation framework can provide pixel-level signal output and is verified by the measured data.The evaluation results of the root mean square error(RMSE)and the Pearson correlation coefficient(PCC)show that the simulated data and the measured data achieve good consistency,and the evaluation results of the waveform eigenvalues indicate that the simulated signals exhibit low errors compared to the measured signals.The proposed simulation framework has the potential to acquire large sample datasets of SIRD under various complex battlefield environments and can provide an effective data source for SIRD application research.展开更多
随着高工作温度红外光电子器件的发展,更高的工作温度下,冷屏部件的热辐射会带来背景辐射噪声,对红外探测器的成像造成干扰。为研究高温器件冷屏部件热辐射对芯片性能的影响,基于蒙特卡洛原理,采用3D Studio Max建立冷屏模型,提取模型...随着高工作温度红外光电子器件的发展,更高的工作温度下,冷屏部件的热辐射会带来背景辐射噪声,对红外探测器的成像造成干扰。为研究高温器件冷屏部件热辐射对芯片性能的影响,基于蒙特卡洛原理,采用3D Studio Max建立冷屏模型,提取模型信息编写程序,计算冷屏部件各部分对芯片的辐射传递因子,进而得到冷屏部件热辐射在芯片上产生的噪声信号。在给定的参数和条件下,对某高温器件冷屏进行计算分析,表明该高温器件冷屏部件的温度需低于196 K。为抑制高温器件冷屏部件的热辐射,研究了整体降低冷屏发射率和局部降低冷屏发射率这两种方案。整体降低冷屏发射率可降低冷屏自身热辐射产生的噪声信号,但会造成外部辐射中经冷屏反射间接到达芯片的杂散辐射噪声信号迅速增加。局部降低冷屏发射率可降低冷屏自身热辐射产生的噪声信号并使外部辐射中经冷屏反射间接到达芯片的杂散辐射噪声信号缓慢增加。采用局部降低冷屏发射率的方案,对总的杂散辐射的抑制效果与温度有关,当冷屏部件温度小于203 K时,会引起总的杂散辐射噪声信号增加;当冷屏部件温度大于203 K时,可以降低总的杂散辐射噪声信号。展开更多
为解决带式高速导种装置导种过程中种带托片与种粒均经过监测点,无法区分脉冲变化特征,导种性能难以监测的问题,研究一种基于红外传感器的带式高速导种装置监测方法并设计了监测系统。利用其导种特性提出了双侧脉冲比较法,设计了带式高...为解决带式高速导种装置导种过程中种带托片与种粒均经过监测点,无法区分脉冲变化特征,导种性能难以监测的问题,研究一种基于红外传感器的带式高速导种装置监测方法并设计了监测系统。利用其导种特性提出了双侧脉冲比较法,设计了带式高速导种装置监测模块硬件电路与软件程序。同时通过对监测系统采样试验结果分析,提出一种基于双侧脉冲值分析与能量掩码平滑算法(Bilateral pulse value analysis and energy masking smoothing algorithm,BPV-EMSA)的带式高速导种装置监测算法。仿真试验表明:该算法减少了原始脉冲的噪声和随机波动,使数据更加平滑稳定并突出了数据主要趋势和模式,同时抑制了瞬态脉冲干扰,提升了数据可解释性和分析准确性。监测系统精度试验结果表明:所设计的带式高速导种装置监测系统在不同作业速度下最高监测精度为97.65%,最低精度为95.99%,系统能够精确采集种粒经过监测点的脉冲变化。监测系统性能评价试验结果表明:播种合格率平均监测差值为2个百分点,播种漏播率平均监测差值为1.45个百分点,播种重播率平均监测差值为0.56个百分点。播种合格率相对差值不大于2.23个百分点,播种漏播率相对差值不大于1.78个百分点,播种重播率相对差值不大于1.00个百分点。该监测方法能够准确监测带式高速导种装置的导种性能。展开更多
基金supported by the Foundation of Equipment Preresearch Area(Grant No.80919010303).
文摘Missile-borne short-range infrared detection(SIRD)technology is commonly used in military ground target detection.In complex battlefield environments,achieving precise strike on ground target is a challenging task.However,real battlefield data is limited,and equivalent experiments are costly.Currently,there is a lack of comprehensive physical modeling and numerical simulation methods for SIRD.To this end,this study proposes a SIRD simulation framework incorporating full-link physical response,which is integrated through the radiative transfer layer,the sensor response layer,and the model-driven layer.In the radiative transfer layer,a coupled dynamic detection model is established to describe the external optical channel response of the SIRD system by combining the infrared radiation model and the geometric measurement model.In the sensor response layer,considering photoelectric conversion and signal processing,the internal signal response model of the SIRD system is established by a hybrid mode of parametric modeling and analog circuit analysis.In the model-driven layer,a cosimulation application based on a three-dimensional virtual environment is proposed to drive the full-link physical model,and a parallel ray tracing method is employed for real-time synchronous simulation.The proposed simulation framework can provide pixel-level signal output and is verified by the measured data.The evaluation results of the root mean square error(RMSE)and the Pearson correlation coefficient(PCC)show that the simulated data and the measured data achieve good consistency,and the evaluation results of the waveform eigenvalues indicate that the simulated signals exhibit low errors compared to the measured signals.The proposed simulation framework has the potential to acquire large sample datasets of SIRD under various complex battlefield environments and can provide an effective data source for SIRD application research.
文摘为解决带式高速导种装置导种过程中种带托片与种粒均经过监测点,无法区分脉冲变化特征,导种性能难以监测的问题,研究一种基于红外传感器的带式高速导种装置监测方法并设计了监测系统。利用其导种特性提出了双侧脉冲比较法,设计了带式高速导种装置监测模块硬件电路与软件程序。同时通过对监测系统采样试验结果分析,提出一种基于双侧脉冲值分析与能量掩码平滑算法(Bilateral pulse value analysis and energy masking smoothing algorithm,BPV-EMSA)的带式高速导种装置监测算法。仿真试验表明:该算法减少了原始脉冲的噪声和随机波动,使数据更加平滑稳定并突出了数据主要趋势和模式,同时抑制了瞬态脉冲干扰,提升了数据可解释性和分析准确性。监测系统精度试验结果表明:所设计的带式高速导种装置监测系统在不同作业速度下最高监测精度为97.65%,最低精度为95.99%,系统能够精确采集种粒经过监测点的脉冲变化。监测系统性能评价试验结果表明:播种合格率平均监测差值为2个百分点,播种漏播率平均监测差值为1.45个百分点,播种重播率平均监测差值为0.56个百分点。播种合格率相对差值不大于2.23个百分点,播种漏播率相对差值不大于1.78个百分点,播种重播率相对差值不大于1.00个百分点。该监测方法能够准确监测带式高速导种装置的导种性能。
