应用SAWD技术实现瞬时频率测量

Measuring Instant Frequency by Using Surface Audio Wave Delay

阐述了声表面波色散延迟线(SAWD)的特性,并详细介绍了实现SAWD测频的关键技术及解决途径;结合所研制的捷变频雷达本振精度测试仪,给出了采用SAWD技术实现对瞬时频率的实例.实测数据表明,其测试精确度和稳定性等方面完全能够满足实际需要.

SAWD（ Surface Audio Wave Delay） along with key technologies of and solution to measuring frequency. According to the accuracy measuring instrument of loeal oscillator frequency agility radar, an example was presented in which SAWD technology was employed to derive instant frequency. The results indicate that the accuracy and stability are capable of meeting the actual needs.