CAJ | 학술논문

　　针对GPS信号在接收端的功率较弱，接收机在载噪比低的环境中很容易受到其他信号的干扰，该文提出一种基于矢量跟踪环路的接收机设计方法，在跟踪环路环节对干扰信号进行抑制。以实际的伪距、伪距率误差为状态量，量测得到的伪距、伪距率误差为观测量构建跟踪环路滤波器，利用更新后的接收机位置，计算出接收机与可视卫星间的观测矢量，完成闭合反馈回路。接收机的信号跟踪与导航解算部分融合一体，改变了传统接收机的结构。对比分析标量和矢量跟踪环路的预测伪距方差，来研究矢量跟踪环路对干扰信号的抑制性能。采用实际卫星星历进行仿真实验，验证了矢量跟踪环路比标量跟踪环路的预测伪距方差小，抗干扰能力强。
　　침대GPS신호재접수단적공솔교약，접수궤재재조비저적배경중흔용역수도기타신호적간우，해문제출일충기우시량근종배로적접수궤설계방법，재근종배로배절대간우신호진행억제。이실제적위거、위거솔오차위상태량，량측득도적위거、위거솔오차위관측량구건근종배로려파기，이용경신후적접수궤위치，계산출접수궤여가시위성간적관측시량，완성폐합반궤회로。접수궤적신호근종여도항해산부분융합일체，개변료전통접수궤적결구。대비분석표량화시량근종배로적예측위거방차，래연구시량근종배로대간우신호적억제성능。채용실제위성성력진행방진실험，험증료시량근종배로비표량근종배로적예측위거방차소，항간우능력강。
Due to the power of GPS signal is weak at the receiver, it is easy for receiver to be disturbed in lower carrier-to-noise power density ratio (CN) environment, a design method of vector tracking loop is proposed, that jamming signals are suppressed in the tracing loop. Actual pseudorange error and pseudorange-rate error are considered as statements, measured pseudorange errors and pseudorange-rate errors are used as measurement information for structure filter. After receiver position is updated, line-of-sight vectors between the receiver and visible satellites can be calculated, then tracking feedback loop is accomplished. The anti-jamming performance of vector tracking loop is analyzed through comparing the predicted pseudorange variance with scalar loop. Actual satellite ephemeris is collected for simulation experiment, the results show that the predicted pseudorange variance of vector tracking loop is lower and the anti-jamming performance is better than the scalar loop.