摘要
无线电声探测系统配合风廓线雷达可探测大气温度。探测高度为100～1500m,精度为0.5K。该系统采用8031单片机进行控制,根据控制命令可发出不同时间间隔、不同时间长度、不同频率的标准正弦波信号。该装置结构紧凑、稳定可靠,可直接安装在PC机内的扩展槽上。它主要由单片机控制电路、四路D/A转换电路及四路正弦波发生器电路组成。可随时接收来自PC机总线上的各种控制命令,发出各种正弦波信号,通过外接功率放大器及换能器将电声信号发射出去。
The temperature-measuring radio-acoustic sounding system combined with wind profile radar to measure atmospheric temperature at heights of 100—1500 m is developed and its precision is 0.5K. The system is controlled by chip microprocessor 8031 and can transmit standard sinusoidal waves with various frequencies and arbitrary time intervals according to various requirements. The device has a compact structure and it is completely designed on one printed circuit card, which is directly plugged in the expanding groove of personal computer (PC). It mainly contains CPU (chip microprocessor 8031), four-channel 12-bit D/A converters and four-channel sinusoidal wave generators. When working smoothly, the system can receive orders from personal computer (PC) at any time, and then radio-acoustic signals can be transmitted out via isolated circuit, outside connected power amplifier and loudspeaker.
出处
《气象》
CSCD
北大核心
2005年第5期80-82,共3页
Meteorological Monthly
