论文部分内容阅读
相关测量在许多领域里得到广泛应用,但用现成的微处理机做实时的相关测量在速度上尚存在一定困难。为解决这一矛盾,我们使用微处理器芯片和高速中小规模电路相结合,组成64路时间展开相关机。基本上适应实时快速处理信号的要求。一、相关机的基本原理对两个信号 t_1(t),t_2(t+△τ)求相关的基本方法是:R_(12)≈1/T∫_0~Tt_1(t)t_2(t+△τ)dt在实际电路里是对 x_1(t),x_2(t+△τ)采取抽样求相关的方法。在满足抽样定理的情况下,一路采用密抽样办法,而另一路采用疏抽样办法。如图1所示。
Related measurements are widely used in many fields, but real-time related measurements using off-the-shelf microprocessors are still somewhat speedy. To solve this conflict, we use the microprocessor chip and high-speed small and medium-sized circuits combined to form a 64-way time to start the relevant machine. Basically adapt to real-time rapid processing of signal requirements. First, the basic principles of the relevant machine The basic method for finding the correlation between two signals t_1 (t), t_2 (t + △ τ) is: R 12 ≈ 1 / T ∫ 0 ~ T t 1 t 2 t + dt in the actual circuit is the sampling of x_1 (t), x_2 (t + △ τ) to find the relevant method. In the case of satisfying the sampling theorem, the dense sampling method is adopted all the way and the random sampling method is used for the other path. As shown in Figure 1.