radio-frequency technique

Companding is a useful technique for improving the signal to noise ratio ( SNR) over poor radio channels.

压扩技术作为提高伟输信号信噪比的有效手段，在通信系统中得到了广泛应用。

Study on the Application of an Underground Radio Technique

一种地下无线电技术的应用研究

Superiority Comparison and Analysis on Measurement Technique of Secondary Voltage Drop for Radio and Wire TV

无线式与有线式电压互感器二次压降测试技术优势对比与检测分析

A Scheme is proposed of using a computer on sline and digital filtering technique to perform digital filtering and lane identification of the phase signals of a port radio navigation system.

本文提出了采用单片机和数字滤波技术对一种港口双曲线无线电导航系统的相位信号进行滤波处理和巷识别的方案。

In this paper, the mountain-based radio occultation is simulated using the 3D ray tracing technique. The starting time, the azimuth angle and the duration of the occultation events are obtained.

利用3维射线追踪技术模拟山基（或机载）无线电掩星，研究掩星事件出现的时间、方位角和掩星事件持续时间；

The highly sensitive radio tracer technique is often used to follow tagged synthetic soil ingredients.

高灵敏度的放射性示踪技术,已经常用于跟踪标志污垢成分的试验.

In order to investigate the relationship between cell immunologic function and hormonal levels of elderly, we studied the mitogenesis of peripheral T lymphocyte and IL 2 activities using bioassay technique, and plasma testosterone ( T) and estradiol ( E2) levels using radio immunoassay techniques.

为探讨老年男性人群血浆雌二醇及睾酮含量与T淋巴细胞功能的相关性，以50岁以上男性为研究对象，应用放射免疫法和生物测定法分别检测了血浆睾酮、雌二醇含量和T淋巴细胞功能。

A Data Mining Technique Suits for Radio Signals' Monitoring

一种适合于短波通信信号监测的数据挖掘技术

The way of remote sensing of terrestrial atmospheric parameters using space borne GPS radio occultation technique is discusses in this paper.

探讨了空基无线电掩星技术应用于遥感地球大气参数方法，并将该方法编制成资料处理软件。

It is indicated in this paper that effective earth radius can be introduced by using median value approximation of integration, which is also an effective technique to obtain accurate solution of atmospheric effects on radio wave propagation.

该文指出，使用中值近似是获取大气折射精确解的一种途径，而且通过积分中值近似可导出有效地球半径。