Robot-assisted kidney transplantation(RAKT)is a new,minimally invasive option for kidney transplantation with great application prospects.This narrative review aimed to outline the developmental history of RAKT,existi...Robot-assisted kidney transplantation(RAKT)is a new,minimally invasive option for kidney transplantation with great application prospects.This narrative review aimed to outline the developmental history of RAKT,existing technology,and its application in different types of kidney transplant surgery.The challenges with RAKT and the solutions to those challenges in practical operation are analyzed as well,to provide reference for the application of robots in kidney transplantation.展开更多
Low-angle estimation for very high frequency(VHF)radar is a difficult problem due to the multipath effect in the radar field,especially in complex scenarios where the reflection condition is unknown.To deal with this ...Low-angle estimation for very high frequency(VHF)radar is a difficult problem due to the multipath effect in the radar field,especially in complex scenarios where the reflection condition is unknown.To deal with this problem,we propose an algorithm of target height and multipath attenuation joint estimation.The amplitude of the surface reflection coefficient is estimated by the characteristic of the data itself,and it is assumed that there is no reflected signal when the amplitude is very small.The phase of the surface reflection coefficient and the phase difference between the direct and reflected signals are searched as the same part,and this represents the multipath phase attenuation.The Cramer-Rao bound of the proposed algorithm is also derived.Finally,computer simulations and real data processing results show that the proposed algorithm has good estimation performance under complex scenarios and works well with only one snapshot.展开更多
文摘Robot-assisted kidney transplantation(RAKT)is a new,minimally invasive option for kidney transplantation with great application prospects.This narrative review aimed to outline the developmental history of RAKT,existing technology,and its application in different types of kidney transplant surgery.The challenges with RAKT and the solutions to those challenges in practical operation are analyzed as well,to provide reference for the application of robots in kidney transplantation.
基金the Fund for Foreign Scholars in University Research and Teaching Programs(the 111 Project)(No.B18039)。
文摘Low-angle estimation for very high frequency(VHF)radar is a difficult problem due to the multipath effect in the radar field,especially in complex scenarios where the reflection condition is unknown.To deal with this problem,we propose an algorithm of target height and multipath attenuation joint estimation.The amplitude of the surface reflection coefficient is estimated by the characteristic of the data itself,and it is assumed that there is no reflected signal when the amplitude is very small.The phase of the surface reflection coefficient and the phase difference between the direct and reflected signals are searched as the same part,and this represents the multipath phase attenuation.The Cramer-Rao bound of the proposed algorithm is also derived.Finally,computer simulations and real data processing results show that the proposed algorithm has good estimation performance under complex scenarios and works well with only one snapshot.
