POSITIONING DEVICE

• Main Authors: MOTOOKA NORIZUMI, FUJITA MASAYASU, SATO TOMONORI, KAWAGUCHI TAKAMASA
• Format: Patent
• Language: English; Japanese
• Published: 04.06.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To provide a positioning system capable of performing positioning with high accuracy using a positioning signal without providing reinforcement information together with a positioning signal providing the reinforcement information.SOLUTION: A positioning device 100 includes: a first decode part 21 for detecting a false distance and a carrier wave phase integrated value from a ranging signal L1C/A providing correction reinforcement information [LC/A] and detecting the false distance and the carrier wave phase integrated value from a ranging signal B1C without providing the reinforcement information; an error correction part 27 for detecting the correction data [LC/A] of the ranging signal formed from the reinforcement information to correct the false distance and carrier wave phase integrated value of the ranging signal L1C/A by the correction data [LC/A]; and a positioning calculation part 25 for performing and positioning filter calculation using first and second observation equations obtained by forming the first observation equation using the corrected false distance and carrier wave phase integrated value and forming the second observation equation using the time difference value of the false distance of a ranging signal B1C and the time difference value of the carrier wave phase integrated value.SELECTED DRAWING: Figure 3 【課題】補強情報の提供のない測距信号を補強情報の提供のある測距信号と共に用いて高精度測位を行う測位方式を提供する。【解決手段】測位装置１００は、補正用の補強情報［ＬＣ／Ａ］の提供のある測距信号Ｌ１Ｃ／Ａから擬似距離、搬送波位相積算値を検出し、補強情報の提供のない測距信号Ｂ１Ｃから擬似距離、搬送波位相積算値を検出する第１デコード部２１、補強情報から生成された測距信号の補正データ［ＬＣ／Ａ］を検出し、補正データ［ＬＣ／Ａ］で測距信号Ｌ１Ｃ／Ａの擬似距離と搬送波位相積算値を補正する誤差補正部２７、補正された擬似距離と搬送波位相積算値を用いて第１の観測方程式を生成し、測距信号Ｂ１Ｃの擬似距離の時間差分値と搬送波位相積算値の時間差分値を用いて第２の観測方程式を生成し、第１の観測方程式、第２の観測方程式を用いたフィルタ演算を実行して測位する測位演算部２５を備える。【選択図】図３