Hardware-in-the-loop Simulation With Navigation Satellite Signal Simulator Research

With the development of satellite navigation technology at home and abroad，thereal-time semi physical simulation system，composing of a satellite signal simulator，anavigation satellite receiver，a controller and a simulation machine has became one of the hotresearch.Especially in the aerospace field，due to the carriers (onboard etc.) have highdynamic range and movement，it must completes the assessment by the satellite simulatorsatellite receiver performance in laboratory work environment.At the same time，restrictedsatellite signal simulator hardware conditions，needed certain time of data processing，real-time semi physical simulation system becomes one of the difficulties to be solved.In this thesis, the design of satellite signal simulator system is studied based onsemi-physical simulation. The main works and contributions of the thesis are as follows:1. The using principle and usage requirements of semi-physical simulation are analyzed.The simulator remote control system is proposed. It is based on loop simulation program. Theprogram involves some equipments, including a computer simulation, a satellite signalsimulator, a satellite signal receivers.The simulator program of work in local mode isdesigned with simple and a high usability.2. The remote control system interface technology is studied. In the full comparison ofvarious interfaces, the complexity of trade-offs, and data processing hardware overhead ofseveral factors(real-time etc.), proposed and designed a communication method,which isbased on PCI interface and fiber reflective memory card VMIC. Based on Microsoft VisualStudio2008(VS2008) development environment, the communication completed a driverconfiguration and secondary development of the PCI and fiber optic reflective memory card.The use of DMA interrupt solves the problems of10ms data transmission.3. The technology of control system simulation software is studied. The object-orientedand modular design concept are proposed. The works by creating a dialog class for the object, as well as other types of multi-document class, the further realization of the software designand development. The software not only completed the carrier (missile) sports model, themodel solver and track transport, the carrier can also simulate the trajectory simulationsatellite constellation, to constellation model and carrier motion model visualization.4. A non-real-time tasks (local mode)and real-time simulation platform simulator task(remote control mode) are built. The positioning works of the commercial receiver arecompleted. According to the datas of receiver and analog source, papers made a analysis ofplots by using MATLAB. The papers had conclusions, which the design of carrier motionmodel had accuracy,the system of simulation software had real-time controllability andreliability.