数字信号处理技术是一门发展很快的新兴学科,它的应用十分广泛,如通讯、控制、图像和语音处理、测量与控制、医学等。数字信号处理平台主要有DSP、单片机、通用/工控计算机、FPGA/CPLD等,文章主要介绍了在进行数字信号处理时,利用JTAG(J...数字信号处理技术是一门发展很快的新兴学科,它的应用十分广泛,如通讯、控制、图像和语音处理、测量与控制、医学等。数字信号处理平台主要有DSP、单片机、通用/工控计算机、FPGA/CPLD等,文章主要介绍了在进行数字信号处理时,利用JTAG(Joint Test Advisory Group)技术的仿真器在CCS平台下对TMS320C54x系列DSP芯片实现在线编程,进行在线调试时中断检测处理技术及其应用。展开更多
In order to obtain a compact and exact representation of 2D range scans,UKF(unscented Kalman filter) and CDKF(central difference Kalman filter) were proposed for extracting the breakpoint of the laser data. Line extra...In order to obtain a compact and exact representation of 2D range scans,UKF(unscented Kalman filter) and CDKF(central difference Kalman filter) were proposed for extracting the breakpoint of the laser data. Line extraction was performed in every continuous breakpoint region by detecting the optimal angle and the optimal distance in polar coordinates,and every breakpoint area was constructed with two points. As a proof to the method,an experiment was performed by a mobile robot equipped with one SICK laser rangefinder,and the results of UKF/CDKF in breakpoint detection and line extraction were compared with those of the EKF(extended Kalman filter) . The results show that the exact geometry of the raw laser data of the environments can be obtained by segmented raw measurements(combining the proposed breakpoint detection approach with the line extraction method) ,and method UKF is the best one compared with CDKF and EKF.展开更多
光盘刻录机的不易操作主要在于其容易发生“缓存欠载”(Buffer Under Run)错误,使烧录失败,盘片报废。一种解决方法是增加缓冲存储记忆体——缓存(Buffer),以求降低缓存欠载的可能性。但这只是一种治标不治本的方法。就以目前最大的缓...光盘刻录机的不易操作主要在于其容易发生“缓存欠载”(Buffer Under Run)错误,使烧录失败,盘片报废。一种解决方法是增加缓冲存储记忆体——缓存(Buffer),以求降低缓存欠载的可能性。但这只是一种治标不治本的方法。就以目前最大的缓存也不过是8兆而已,而一张刻录盘的容量为650兆,当处于高倍速刻录的情况下时,8兆的缓存也不能支持太久,一般也就10秒钟左右,而它却会很明显地增加刻录机成本;另外一种解决方法是防刻死技术,或称之为烧不死技术,这也是本文介绍的重点。 要了解防刻死技术就应先了解什么是缓存欠载。展开更多
文摘数字信号处理技术是一门发展很快的新兴学科,它的应用十分广泛,如通讯、控制、图像和语音处理、测量与控制、医学等。数字信号处理平台主要有DSP、单片机、通用/工控计算机、FPGA/CPLD等,文章主要介绍了在进行数字信号处理时,利用JTAG(Joint Test Advisory Group)技术的仿真器在CCS平台下对TMS320C54x系列DSP芯片实现在线编程,进行在线调试时中断检测处理技术及其应用。
基金Project(2003AA1Z2130)supported by the National High-Tech Research and Development Program of ChinaProject(2005C11001-02)supported by the Science and Technology Project of Zhejiang Province,China
文摘In order to obtain a compact and exact representation of 2D range scans,UKF(unscented Kalman filter) and CDKF(central difference Kalman filter) were proposed for extracting the breakpoint of the laser data. Line extraction was performed in every continuous breakpoint region by detecting the optimal angle and the optimal distance in polar coordinates,and every breakpoint area was constructed with two points. As a proof to the method,an experiment was performed by a mobile robot equipped with one SICK laser rangefinder,and the results of UKF/CDKF in breakpoint detection and line extraction were compared with those of the EKF(extended Kalman filter) . The results show that the exact geometry of the raw laser data of the environments can be obtained by segmented raw measurements(combining the proposed breakpoint detection approach with the line extraction method) ,and method UKF is the best one compared with CDKF and EKF.
文摘光盘刻录机的不易操作主要在于其容易发生“缓存欠载”(Buffer Under Run)错误,使烧录失败,盘片报废。一种解决方法是增加缓冲存储记忆体——缓存(Buffer),以求降低缓存欠载的可能性。但这只是一种治标不治本的方法。就以目前最大的缓存也不过是8兆而已,而一张刻录盘的容量为650兆,当处于高倍速刻录的情况下时,8兆的缓存也不能支持太久,一般也就10秒钟左右,而它却会很明显地增加刻录机成本;另外一种解决方法是防刻死技术,或称之为烧不死技术,这也是本文介绍的重点。 要了解防刻死技术就应先了解什么是缓存欠载。
