摘要：【中文】本发明涉及一种高精度实时绝对定轨方法，在星载接收机高精度实时定轨的应用背景下，以伪距与载波相位作为滤波方程的观测量，结合高度非线性的动力学模型，用扩展卡尔曼滤波高精度稳定地输出卫星运行位置和速度等状态参数，在充分利用高精度载波相位观测量的同时，采用多种手段提高运行效率，以满足中低轨高精度实时定轨需求，定轨测速精度均大幅提高，此外还具备轨道预报和外推能力，很大程度上提高了导航设备在轨输出的可靠性，本发明在接收机平台上进行了低轨卫星场景模拟实时定轨测试，可实现实时绝对定轨位置精度优于0.5m、测速精度优于0.5mm/s的技术指标，相较于常规伪距实时单点定位方法，定轨测速精度均大幅提高。 【EN】The invention relates to a high-precision real-time absolute orbit determination method, which takes pseudo range and carrier phase as observed quantity of a filter equation under the application background of high-precision real-time orbit determination of a satellite-borne receiver, combines a highly nonlinear dynamic model, uses extended Kalman filtering to stably output state parameters such as satellite operation position, speed and the like at high precision, adopts various means to improve operation efficiency while fully utilizing the observed quantity of the high-precision carrier phase so as to meet the high-precision real-time orbit determination requirement of medium and low orbits, greatly improves the orbit determination and speed measurement precision, has the capabilities of orbit prediction and extrapolation, greatly improves the reliability of in-orbit output of navigation equipment, performs low-orbit satellite scene simulation real-time orbit determination test on a receiver platform, can realize the technical indexes that the precision of the real-time absolute orbit determination position is superior to 0.5m and the speed measurement precision is superior to 0.5mm/s, compared with the conventional pseudo-range real-time single-point positioning method, the orbit determination and speed measurement precision is greatly improved.

摘要：【中文】本发明提出了一种适用于导航接收机的脉冲干扰监测与参数确定方法，主要采用分段截取数字采样数据和非相干累积提高脉冲干扰检测能力等技术，包括接收信号存储、数据预处理、数据平滑和参数确定等模块，在统一的时钟控制下，通过各模块完成卫星导航接收机对脉冲干扰的检测和参数确定。该方法可以迅速对进入接收机内部的脉冲干扰进行检测和参数确定，给出脉冲干扰信号的脉冲周期和占空比参数，并发送干扰告警信息，在复杂脉冲干扰条件下提高导航接收机的正确性和可用性。 【EN】The invention provides a pulse interference monitoring and parameter determining method suitable for a navigation receiver, which mainly adopts technologies of intercepting digital sampling data in sections and improving pulse interference detection capability through incoherent accumulation and the like, comprises modules of receiving signal storage, data preprocessing, data smoothing, parameter determining and the like, and completes the detection of the satellite navigation receiver on the pulse interference and the parameter determination through each module under the control of a unified clock. The method can rapidly detect the pulse interference entering the receiver and determine the parameters, provides the pulse period and the duty ratio parameters of the pulse interference signal, sends the interference alarm information, and improves the correctness and the usability of the navigation receiver under the condition of complex pulse interference.

摘要：【中文】一种适用于高精度卫星导航设备的同频干扰消除方法，应用于存在已知信息的大功率同频干扰环境下的高精度导航设备。本发明在高精度导航设备射频前端配备了微波开关，在已知同频干扰发射窗口期间，将微波开关设置为阻断状态，用微波开发阻隔同频干扰信号能量进入高精度导航设备射频信道，保护射频信道不被同频干扰功率烧毁，在同频干扰设备不发射功率的间隙窗口期间，将微波开关设置为连通状态，使导航信号进入射频信号，支持高精度导航设备的持续工作。通过控制微波开关的阻断连通状态，保证了存在已知同频干扰环境下的高精度导航设备不受到同频电磁波信号的干扰，从而连续输出高精度位置速度服务信息。 【EN】A co-channel interference elimination method suitable for high-precision satellite navigation equipment is applied to the high-precision navigation equipment in a high-power co-channel interference environment with known information. The microwave switch is arranged at the front end of the radio frequency of the high-precision navigation equipment, the microwave switch is set to be in a blocking state during the period of a known same-frequency interference emission window, the same-frequency interference signal energy is prevented from entering a radio frequency channel of the high-precision navigation equipment by microwave development, the radio frequency channel is protected from being burnt by the same-frequency interference power, and the microwave switch is set to be in a communicating state during the period of a gap window of the same-frequency interference equipment which does not emit power, so that the navigation signal enters the radio frequency signal, and the continuous work of the high-precision navigation equipment is supported. By controlling the connection blocking state of the microwave switch, the high-precision navigation equipment in the known same-frequency interference environment is ensured not to be interfered by the same-frequency electromagnetic wave signals, so that the high-precision position and speed service information is continuously output.