Shoes squeaking in perfect unison, dozens of Japanese students move in formation through a Yokohama sports hall in training ...

Abstract: We have developed a fast and efficient algorithm for estimating the global positioning system (GPS) differential code biases (DCBs) and ionospheric vertical total electron content (VTEC) ...

Unmanned aerial vehicles (UAVs) are a new form of vehicle with very new behavior, so previous aviation laws and regulations have a certain gap and are not completely suitable. According to Mr. Nguyen ...