We put the best emergency radios to the test to see which provided the best alert system. See our top picks to keep you ...

近期，Jump Trading和Virtu Financial这两家公司因利用短波通信技术而被Skywave Networks指控‘不讲武德’。随着金融科技日益复杂，这一诉讼的来龙去脉引发 ...

Abstract: Sea–land clutter classification (SLCC) is a key technology to improve the target positioning accuracy of skywave over-the-horizon-radar (OTHR). The scale of the sea and land regions in the ...