FBUとは 意味・読み方・使い方

Peak frequencies fbu, fbd in beat signals B1-B9, which correspond to the difference in frequency between a plurality of reception signals fr1-fr9 received by a plurality of reception antennas AR1-AR9 and a transmission signal fs, are extracted for converting the phase difference of respective beat signals B1-B9 in the peak frequencies fbu, fbd to a frequency signal.例文帳に追加

複数の受信アンテナＡＲ１〜ＡＲ９が受信する複数の受信信号ｆｒ１〜ｆｒ９と送信信号ｆｓとの周波数の差に相当するビート信号Ｂ１〜Ｂ９のピーク周波数ｆｂｕ、ｆｂｄを抽出し、そのピーク周波数ｆｂｕ、ｆｂｄにおける各ビート信号Ｂ１〜Ｂ９の位相差を周波数信号に変換する。 - 特許庁

Therefore, it is determined that reflection by the close range road surface or the raindrops is made when the intensity of the peak frequency in the converted frequency signal is compared with specific one using the rising- and falling-section peak frequencies fbu, fbd as a reference and is the specific intensity or less.例文帳に追加

そのため、変換された周波数信号のピーク周波数の強度を、上昇部、下降部ピーク周波数ｆｂｕ、ｆｂｄを基準とする所定の強度と比較し、所定の強度以下である場合には、至近距離路面もしくは雨滴による反射であると判定する。 - 特許庁