Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DELAY TIME ESTIMATION APPARATUS
PROBLEM TO BE SOLVED: To provide a delay time estimation apparatus capable of improving an estimation accuracy of a delay time.SOLUTION: When measuring a delay time at transmission and reception of a radio wave, time (data holding time t1) required for replying a reply radio wave Sb after a transmission radio wave Sa was received in a terminal is changed by a specified time Δt, and the reply radio wave Sb is transmitted to a communication master at a data holding time t2. A value obtained by adding the specified time Δt to a delay time (a first delay time Ts1) obtained under a condition that the transmission of the reply radio wave Sb is not changed by the specified time Δt is set to a positive value Tk. A clock error is calculated by obtaining that how the delay time (a second delay time Ts2) obtained under the condition that the transmission of reply radio wave Sb is changed by the specified time Δt is deviated to the positive value Tk.SELECTED DRAWING: Figure 3
【課題】遅延時間の推定の精度を向上することができる遅延時間推定装置を提供する。【解決手段】電波送受信時の遅延時間を測定するにあたり、端末で送信電波Ｓａを受信してから返信電波Ｓｂを返信するまでに要する時間（データ保持時間ｔ１）を、規定時間Δｔ、変化させ、返信電波Ｓｂをデータ保持時間ｔ２で通信マスタに送信する。そして、返信電波Ｓｂの送信を規定時間Δｔ変化させない状態下で求めた遅延時間（第１遅延時間「Ｔｓ１」）に規定時間Δｔを加算した値を正値Ｔｋとし、返信電波Ｓｂの送信を規定時間Δｔ変化させた状態下で求めた遅延時間（第２遅延時間「Ｔｓ２」）が正値Ｔｋに対してどれだけずれているかを求めて、クロック誤差を算出する。【選択図】図３
DELAY TIME ESTIMATION APPARATUS
PROBLEM TO BE SOLVED: To provide a delay time estimation apparatus capable of improving an estimation accuracy of a delay time.SOLUTION: When measuring a delay time at transmission and reception of a radio wave, time (data holding time t1) required for replying a reply radio wave Sb after a transmission radio wave Sa was received in a terminal is changed by a specified time Δt, and the reply radio wave Sb is transmitted to a communication master at a data holding time t2. A value obtained by adding the specified time Δt to a delay time (a first delay time Ts1) obtained under a condition that the transmission of the reply radio wave Sb is not changed by the specified time Δt is set to a positive value Tk. A clock error is calculated by obtaining that how the delay time (a second delay time Ts2) obtained under the condition that the transmission of reply radio wave Sb is changed by the specified time Δt is deviated to the positive value Tk.SELECTED DRAWING: Figure 3
【課題】遅延時間の推定の精度を向上することができる遅延時間推定装置を提供する。【解決手段】電波送受信時の遅延時間を測定するにあたり、端末で送信電波Ｓａを受信してから返信電波Ｓｂを返信するまでに要する時間（データ保持時間ｔ１）を、規定時間Δｔ、変化させ、返信電波Ｓｂをデータ保持時間ｔ２で通信マスタに送信する。そして、返信電波Ｓｂの送信を規定時間Δｔ変化させない状態下で求めた遅延時間（第１遅延時間「Ｔｓ１」）に規定時間Δｔを加算した値を正値Ｔｋとし、返信電波Ｓｂの送信を規定時間Δｔ変化させた状態下で求めた遅延時間（第２遅延時間「Ｔｓ２」）が正値Ｔｋに対してどれだけずれているかを求めて、クロック誤差を算出する。【選択図】図３
DELAY TIME ESTIMATION APPARATUS
遅延時間推定装置
IMAI TOMOMI (Autor:in) / KOGA KENICHI (Autor:in) / KOSUGI MASANORI (Autor:in)
29.06.2017
Patent
Elektronische Ressource
Japanisch
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