Intelligent perception technology of sensors in autonomous vehicles has been deeply integrated with the algorithm of autonomous driving.This paper provides a survey of the impact of sensing technologies on autonomous ...Intelligent perception technology of sensors in autonomous vehicles has been deeply integrated with the algorithm of autonomous driving.This paper provides a survey of the impact of sensing technologies on autonomous driving,including the intelligent perception reshaping the car architecture from distributed to centralized processing and the common perception algorithms being explored in autonomous driving vehicles,such as visual perception,3D perception and sensor fusion.The pure visual sensing solutions have shown the powerful capabilities in 3D perception leveraging the latest self-supervised learning progress,compared with light detection and ranging(LiDAR)-based solutions.Moreover,we discuss the trends on end-to-end policy decision models of high-level autonomous driving technologies.展开更多
In Direct Sequence Code Division Multiple Access (DS-CDMA) systems,the chip wave-form affects the implementation,system bandwidth,envelope uniformity,eye pattern and Multiple user Access Interference (MAI). In this pa...In Direct Sequence Code Division Multiple Access (DS-CDMA) systems,the chip wave-form affects the implementation,system bandwidth,envelope uniformity,eye pattern and Multiple user Access Interference (MAI). In this paper,based on an elementary density function of a second order polynomial,a class of second order continuity pulses is proposed. From this class of pulses,we can find some members having faster decaying rate,bigger eye opening,more uniform envelope and stronger anti-MAI capability than the Nyquist waveform. The normalized-bandwidth-pulse-shape-factor product,the decaying rate of the tail of the time waveform,the opening of the eye diagram,and the envelope uniformity of the second order continuity pulses are addressed in the paper that provide the basic information for the selection of the chip pulse for CDMA systems.展开更多
文摘Intelligent perception technology of sensors in autonomous vehicles has been deeply integrated with the algorithm of autonomous driving.This paper provides a survey of the impact of sensing technologies on autonomous driving,including the intelligent perception reshaping the car architecture from distributed to centralized processing and the common perception algorithms being explored in autonomous driving vehicles,such as visual perception,3D perception and sensor fusion.The pure visual sensing solutions have shown the powerful capabilities in 3D perception leveraging the latest self-supervised learning progress,compared with light detection and ranging(LiDAR)-based solutions.Moreover,we discuss the trends on end-to-end policy decision models of high-level autonomous driving technologies.
基金Supported by University Natural Science Research Pro-ject of Jiangsu (No.03KJB510088)National Natural Science Foundation of China (No.60572130).
文摘In Direct Sequence Code Division Multiple Access (DS-CDMA) systems,the chip wave-form affects the implementation,system bandwidth,envelope uniformity,eye pattern and Multiple user Access Interference (MAI). In this paper,based on an elementary density function of a second order polynomial,a class of second order continuity pulses is proposed. From this class of pulses,we can find some members having faster decaying rate,bigger eye opening,more uniform envelope and stronger anti-MAI capability than the Nyquist waveform. The normalized-bandwidth-pulse-shape-factor product,the decaying rate of the tail of the time waveform,the opening of the eye diagram,and the envelope uniformity of the second order continuity pulses are addressed in the paper that provide the basic information for the selection of the chip pulse for CDMA systems.
