OBSERVATION SYSTEM

• Main Authors: SATO WATARU, HIRAMATSU YUJI, INOUE YUICHI, MASUNARI TOMOHIRO, TAKEISHI AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2016
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

PROBLEM TO BE SOLVED: To solve the problem that prior art has, i.e., to provide an observation system which makes it possible to process measured data directly without performing filtering and averaging processes and thereby reduce a calculation time and calculation costs.SOLUTION: This observation system comprises positioning means, positioning data storage means, sample extraction means, representative sample value calculation means, observed value calculation means, and displacement vector calculation means, the observation system finding the displacement of an observation point by satellite positioning. The sample extraction means handles positioning data within a prescribed time dating back to an observation time of day as an original sample, and the representative sample value calculation means calculates a representative sample value that represents the original sample. The observed value calculation means calculates an observed value on the basis of the representative sample value each time a prescribed observation period elapses, and the displacement vector calculation means calculates a displacement vector at an observation point on the basis of observed values in two periods at the observation point.SELECTED DRAWING: Figure 1 【課題】本願発明の課題は、従来技術が抱える問題を解決することであり、すなわちフィルタ処理や平滑化処理を行うことなく、計測データを直接的に処理することで、計算時間と計算コストを軽減することのできる観測システムを提供することである。【解決手段】本願発明の観測システムは、測位手段と、測位データ記憶手段、標本抽出手段、標本代表値算出手段、観測値算出手段、変位ベクトル算出手段を備え、衛星測位によって観測点の変位を求めるシステムである。このうち標本抽出手段は、観測時刻から遡った所定時間内の測位データを原標本とするもので、標本代表値算出手段は、原標本を代表する標本代表値を算出するものである。また観測値算出手段は、所定の観測期間が経過するたびに標本代表値に基づいて観測値を算出するもので、変位ベクトル算出手段は、観測点における２時期の観測値に基づいてその観測点の変位ベクトルを算出するものである。【選択図】図１