基于微处理器的FM-CW无线电高度表的研究与设计  

Research and design of a FM-CW radio altimeter based on microprocessor

作　　者：陈家尧[1] 陈高平[1] 闫鹏[1] 潘勃[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《电光与控制》2008年第11期92-96,共5页Electronics Optics & Control

摘　　要：阐述了调频连续波(FM-CW)体制无线电高度表的测高原理,分析了影响单一调频体制高度表测高精度的因素,提出一种以微处理器控制系统为核心,两种调频体制兼容的无线电高度表设计方案,给出了设计参数和测试数据。实验表明,通过微处理器的控制,依据高度的不同,无线电高度表能够动态地选择适合该高度的调频工作模式,验证了设计的正确性。The height measuring principle of FM-CW radio altimeter is described. The factors that have effect on the accuracy of height measuring in single frequency modulating altimeter are analyzed. The design scheme of a radio altimeter is put forward, which takes the microprocessor control system as the core, and is compatible with the two frequency modulation systems. Experiments show that, under the control of the microprocessor, the radio altimeter can dynamically choose appropriate frequency modulating mode at different altitude. The accuracy of the design is verified.

关 键 词：微处理器 调频连续波 无线电高度表 控制系统 双调频模式 

分 类 号：V241[航空宇航科学与技术—飞行器设计]