A simple, low cost, and precision frequency meter uses only two pins of a pc parallel port (Figure 1). The TTL-level periodic input signal with frequency f IN connects to the ACK pin of LPT1. This ...
Abstract: Aiming at solving the problem of underwater passive bearing-only tracking (BOT) system, it is difficult to judge the rule of bearing change, which leads to the slow convergence or low ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results