The global positioning system(GPS) is an extremely mature technique in the navigation and position-ing field.However,there are still some limits in some aspects and for some special applications.Spe-cially,the perform...The global positioning system(GPS) is an extremely mature technique in the navigation and position-ing field.However,there are still some limits in some aspects and for some special applications.Spe-cially,the performance of GPS needs to be improved with technological advances.As a GPS-like ground transmitter,the pseudolite provides a new research direction to achieve high positioning ac-curacy and reliability.In this paper,we describe the core technologies of designing and simulation on the coarse acquisition codes in constructing the pseudolite system.In the GPS/pseudolite integration system,the signal PRN 36 of the pseudolite and the GPS satellites signals are acquired in the modified receiver based on the computer software platform.It is shown that the pseudolite technology is ideally suited to augment the GPS alone and provide greater integrity,availability,and continuity of the navi-gation positioning system,especially for indoor use.展开更多
采用了FPGA方法来模拟高动态(G loba l Pos ition System GPS)信号源中的C/A码产生器。C/A码在GPS中实现分址、卫星信号粗捕和精码(P码)引导捕获起着重要的作用,根据文献[1]引入C/A码生成方程,通过硬件描述语言VER ILOG在ISE中实现电路...采用了FPGA方法来模拟高动态(G loba l Pos ition System GPS)信号源中的C/A码产生器。C/A码在GPS中实现分址、卫星信号粗捕和精码(P码)引导捕获起着重要的作用,根据文献[1]引入C/A码生成方程,通过硬件描述语言VER ILOG在ISE中实现电路生成,采用M ODELS IM、SYNPL IFY工具分别进行仿真和综合。最后由图3展示的结果与文献[1]相对比证明了设计的正确性。展开更多
基金Supported by the Start-up Research Foundation of the Dean Excellent Award of Chinese Academy of Sciences.
文摘The global positioning system(GPS) is an extremely mature technique in the navigation and position-ing field.However,there are still some limits in some aspects and for some special applications.Spe-cially,the performance of GPS needs to be improved with technological advances.As a GPS-like ground transmitter,the pseudolite provides a new research direction to achieve high positioning ac-curacy and reliability.In this paper,we describe the core technologies of designing and simulation on the coarse acquisition codes in constructing the pseudolite system.In the GPS/pseudolite integration system,the signal PRN 36 of the pseudolite and the GPS satellites signals are acquired in the modified receiver based on the computer software platform.It is shown that the pseudolite technology is ideally suited to augment the GPS alone and provide greater integrity,availability,and continuity of the navi-gation positioning system,especially for indoor use.
文摘采用了FPGA方法来模拟高动态(G loba l Pos ition System GPS)信号源中的C/A码产生器。C/A码在GPS中实现分址、卫星信号粗捕和精码(P码)引导捕获起着重要的作用,根据文献[1]引入C/A码生成方程,通过硬件描述语言VER ILOG在ISE中实现电路生成,采用M ODELS IM、SYNPL IFY工具分别进行仿真和综合。最后由图3展示的结果与文献[1]相对比证明了设计的正确性。
