目前美国国防部所提出的技术要求和提供的基金,要求雷达除了降低价格、功耗、重量和体积外,还要提高其多用性和可靠性。这些要求促使了改变对雷达缺陷的传统看法,导致雷达的应用向数字处理技术过渡。只要数字技术依然十分复杂或昂贵,或者要求价格低廉胜过要求灵活性的场合,有些特殊功能仍宜采用模拟器件,例如面声波器 At present, the technical requirements and funding provided by the U.S. Department of Defense require that the radar not only reduce the price, power consumption, weight and size, but also enhance its versatility and reliability. These demands have prompted changes to traditional perceptions of radar defects that have led to the transition of radar applications to digital processing technologies. As long as digital technology is still very complicated or expensive, or if the price is cheaper than the requirement for flexibility, some special features should still use analog components such as surface acoustic wave devices