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发明公开
CN108107456A 实时获取外部轨迹GPU实时生成导航仿真信号的方法 有权

实时获取外部轨迹GPU实时生成导航仿真信号的方法
摘要：
本发明公开了一种实时获取外部轨迹GPU实时生成导航仿真信号的方法，首先创建一片连续的内存作为与GPU的共享内存，用户轨迹实时的从共享内存M1传入到GPU中，在GPU中创建计算导航信号线程Thread1和控制计算导航信号线程Thread2，GPU中的控制计算导航信号线程Thread2检测到共享内存M1中控制GPU信号计算线程的参数已经发生变化后，从共享内存M1中B块读取用户轨迹参数到GPU显存，并传递计算导航信号标记给计算导航信号线程Thread1，计算导航信号线程Thread1等到计算导航信号标记后，计算导航信号线程Thread1进行卫星导航信号计算；信号仿真导航信号计算线程Thread1计算导航信号过程中将生成的信号仿真数据写回到共享内存M1中的C块。通过上述方式，本发明能够保证信号计算生成的实时性。
摘要（英）：

The invention discloses a GPU real-time navigation simulation signal generation method by acquiring external trajectories in real time. Firstly a piece of contiguous memory is created to act as the shared memory with the GPU. The user trajectories are transmitted to the GPU from the shared memory M1 in real time. A calculation navigation signal thread Thread 1 and a control calculation navigationsignal thread Thread 2 are created in the GPU. The control calculation navigation signal thread Thread 2 in the GPU detects the change of the parameters of the control GPU signal calculation thread inthe shared memory M1 and then reads the user trajectory parameters from the block B of the shared memory M1 to the GPU video memory and transmits the calculation navigation signal mark to the calculation navigation signal thread Thread 1. The calculation navigation signal thread Thread 1 obtains the calculation navigation signal mark and then the calculation navigation signal thread Thread 1 performs satellite navigation signal calculation. The signal simulation navigation signal calculation thread Thread 1 writes the generated signal simulation data back to the block C of the shared memory M1 in the navigation signal calculation process. With application of the mode, the real-time performance of signal calculation and generation can be guaranteed.

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