模式指示 meaning in English

mode indication

This thesis introduces the elementary concept , evolutive history , working flow and operational principle of secondary surveillance radar and the systemic principle of monopulse secondary surveillance radar . then recommend the structrue and elements of actel ’ fpga and the development and design of fpga based on vhdl . the new responder can detect the video pulse signal upon 100mv and deal with 40 real planes in real time . it also can identify the responding signal of mode a / c and mode 6 and can be swithed freely from one mode to another according to the mode information and transmit the report table of corresponding mode
本论文介绍二次雷达的基本概念、发展历史、工作流程、运作机理以及单脉冲二次雷达的系统原理。重点介绍了actel公司fpga的结构、原理以及fpga的vhdl实现。本文介绍的mssr应答信号处理器,可以检测大于100mv的视频信号,实时处理40个真实目标,并且支持模式ac和模式6应答信号,处理过程中可以根据模式指示信号在两种模式下任意切换,送出相应模式的报表。