| 基于RTX和反射内存的红外景象投射系统实时性设计 |
| |
| 引用本文： | 苏德伦,张金生,廖守亿.基于RTX和反射内存的红外景象投射系统实时性设计[J].红外与激光工程,2013,42(5):1117-1122. |
| |
| 作者姓名： | 苏德伦 张金生 廖守亿 |
| |
| 作者单位： | 1.第二炮兵工程大学,陕西 西安710025; |
| |
| 基金项目： | 中国博士后科学基金（2012M512150） |
| |
| 摘 要： | 红外景象投射是红外成像半实物仿真的关键技术，实时性是其重要性能指标。提出了一种红外景象投射系统设计方案，系统由红外图像生成和红外图像转换两部分组成。图像生成系统基于通用GPU实现，图像转换基于电阻阵列实现。根据仿真应用对像元规模和帧频的需求，采用反射内存网络实现图像数据传输和帧同步。通过红外图像帧周期测试，评估系统的实时性。测试结果表明，在Windows系统下红外图像生成帧周期不稳定，会出现随机性大幅度偏差。提出采用RTX的扩展的实时性设计，给出详细实现方案。试验结果表明:Windows系统中断响应的不确定性是影响图像帧频稳定的主要原因，基于RTX的实时性设计可以保证图像生成在帧同步控制下稳定地以200 Hz帧频运行。
|
| 关 键 词： | 红外景象投射 实时系统 RTX实时扩展 反射内存 帧同步 |
| 收稿时间： | 2012-09-07 |
Real-time design of IRSP system based on RTX and reflective memory |
| |
| Affiliation: | 1.The Second Artillery Engineering University,Xi'an 710025,China;2.96111 Army of PLA,Hancheng 715400,China |
| |
| Abstract: | Infrared scene project (IRSP) is a key technology for infrared imaging hardware in the loop (HWIL) simulation. Real-time quality is very important for IRSP system. A design of IRSP system was presented. The IRSP system was composed of infrared image generation subsystem and infrared scene transformation subsystem. The two subsystems were based on general GPU and resistor array device respectively. Reflective memory network was used for image data transfer and frame synchronization to meet the demand of image size and frame rate for HWIL simulation. The real-time quality was evaluated by testing IR image frame period. The result indicates that significant errors occur unpredictably under Windows system and the frame period is unstable. A new real-time design was introduced based on RTX extension, and the detailed scheme was presented. Test results of the real-time design indicate that the reason for significant frame period error is the unpredictable interrupt response delay under Windows system and the real-time design under RTX extension can ensure a stable frame rate of 200 Hz under the control of frame synchronization. |
| |
| Keywords: | |
|
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
