用射頻穿透墻壁

　　雖然它是合理的眾所周知，軍事和執(zhí)法機(jī)構(gòu)利用射頻技術(shù)（以及熱，聲，紅外），讓他們看到通過(guò)墻壁，它是不太認(rèn)識(shí)到，有民用使用這種類(lèi)型的技術(shù)，以及。

　　許多木匠，甚至“自己動(dòng)手”房主已經(jīng)發(fā)現(xiàn)了一個(gè)小磁螺柱發(fā)現(xiàn)可以幫助確定釘子被驅(qū)動(dòng)到一個(gè)實(shí)心梁。然而，螺柱并不是墻上唯一值得關(guān)注的東西。偶然被金屬鉆頭刺穿的電線會(huì)引發(fā)火災(zāi)。意外刺破煤氣線可導(dǎo)致爆炸后果。視頻線，電話線，報(bào)警系統(tǒng)線，網(wǎng)絡(luò)，等等都可以不見(jiàn)了，同樣脆弱。

　　現(xiàn)代低成本射頻技術(shù)正在幫助使這種關(guān)注成為過(guò)去的事情。高頻半導(dǎo)體和集成電路與先進(jìn)的處理器和顯示系統(tǒng)，使我們的X射線視覺(jué)，當(dāng)談到創(chuàng)建圖像后墻板。

　　Other useful functions can be performed with this technology including：

　　Presence-of-life detectors to find people buried in rubble

　　Finding underground and buried utility and gas lines

　　Tactical entry or assault

　　A baby monitor that can detect through sheets， blankets， and duvets whether or not an infant is breathing

　　Surveillance devices

　　Bridge and deck inspection

　　Land-mine detection （245 W can penetrate 2 to 4 meters depth at heights of less than 1 meter above the soil or road）

　　Fluid-level sensing

　　Automotive backup radar

　　This article looks at how RF can be used as a wall-penetrating technology and how images can be rendered from it. It examines some techniques and architectures designers can use as a starting point before refining their own designs. All parts， data sheets， tutorials， and development kits referenced here can be found on the Digi-Key website.