1) dual frequency sounder
双频探测
2) two-frequency laser detection
双频激光探测
3) Dual Tone Multi Frequency detection [DTMF detection]
双音调多频探测
4) spectrum detection
频谱探测
1.
Through the spectrum detection,the spectrum holes of the primary users can be found,thus the secondary users could use them efficiently.
频谱探测是认知无线电中的关键技术之一,通过频谱探测技术来检测授权用户的频谱空洞,以使得非授权用户能够有效利用。
5) surveying frequency
探测频率
1.
For that reason,it should analyze and handle three important parameters of radar work:environmental conductivity,dielectric constant and surveying frequency.
为此,必须分析、掌握雷达工作的三个重要参数:环境电导率、介电常数和探测频率。
6) Multiple frequency detection
多频探测
补充资料：核爆炸地震波探测(见核爆炸探测)
核爆炸地震波探测(见核爆炸探测)
nuclear explosion seismic detection
hebaozho dizhenbo tanee核爆炸地震波探测(nuclear explos，onseismie detecuon)见核爆炸探汉，l。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条