摘要
阐述脉冲压缩技术在明渠测深的应用。设计中采用线性调频信号作为发射信号,利用其对多普勒频偏信号不敏感行,可以解决因液面波动而引起的多普勒频偏问题。所以,在测深中捕获回波信号的能力较强。由于所用线性调频信号的中心频率较高(达1MHz),但其扫描的频带宽度仅有100kHz,故而引入了带通欠采样技术,这样不仅大大降低了后端的数据处理压力,而且简化系统设计、节约了成本。文章最后用实验给予了验证,并对实验数据做了进一步分析。
In this paper, pulse compression technology in the open channel sounding applications. The design of a linear FM signal as a transmission signal, using its line is not sensitive to Doppler shift signal can be resolved due to fluctuations in liquid level caused by Doppler shift problem. So, in sounding the ability to capture a strong echo signal. Because the linear FM signal center frequency is high （up to 1 MHz）, but the scan bandwidth is only 100 kHz, Guer bandpass due to the introduction of sampling techniques, which not only greatly reduces the pressure on the back-end data processing, and simplify system design and save costs. The article finally gave verified by experiment, and the experimental data do further analysis.
出处
《电子测量技术》
2009年第11期112-114,共3页
Electronic Measurement Technology
