2015
DOI: 10.1007/s10712-015-9323-5
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Abstract: Strapdown airborne gravimetry relies on the combination of an inertial measuring unit (IMU) and a global navigation satellite system (GNSS) to measure the Earth's gravity field. Early results with navigation-grade IMUs showed similar accuracies to those obtained with scalar gravimetric systems in the down component. This paper investigates the accuracy of three IMUs used for strapdown airborne gravimetry under the same flight conditions. The three systems considered were navigation-grade IMUs, iXSea AIRINS and… Show more

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Cited by 12 publications
(4 citation statements)
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“…( 1) is used to determine the gravity disturbance directly in the acceleration domain. That is why the direct method has also been called "accelerometry approach" (Kwon and Jekeli 2001;Ayres-Sampaio et al 2015). In this study, the commercial software NovAtel Waypoint Inertial Explorer generated position solutions in the Precise Point Positioning (PPP) mode based on GPS and GLONASS code and phase observations plus precise satellite orbit and clock products from the Center for Orbit Determination in Europe (CODE).…”
Section: Measurement System and Processing Methodsmentioning
confidence: 99%
“…( 1) is used to determine the gravity disturbance directly in the acceleration domain. That is why the direct method has also been called "accelerometry approach" (Kwon and Jekeli 2001;Ayres-Sampaio et al 2015). In this study, the commercial software NovAtel Waypoint Inertial Explorer generated position solutions in the Precise Point Positioning (PPP) mode based on GPS and GLONASS code and phase observations plus precise satellite orbit and clock products from the Center for Orbit Determination in Europe (CODE).…”
Section: Measurement System and Processing Methodsmentioning
confidence: 99%
“…The "indirect" method as it was introduced by Jekeli (2001) has also been called "inertial navigation approach" (Ayres-Sampaio et al 2015), "traditional way" (Kwon and Jekeli 2001) or "one-step approach" (Becker 2016). Here, all observations from an IMU and a GNSS receiver are integrated in a Kalman filter with a state vector including position, velocity, attitude, sensor biases and gravity.…”
Section: Processing Approaches In Strapdown Gravimetrymentioning
confidence: 99%
“…"Accelerometry approach" (Ayres- Sampaio et al 2015;Kwon and Jekeli 2001), or "cascaded approach" (Becker 2016) have been alternative terms for the "direct" method. In contrast to the indirect method, where gravity determination is done in the position domain, in the direct method, vertical gravity is directly obtained in the acceleration domain.…”
Section: Processing Approaches In Strapdown Gravimetrymentioning
confidence: 99%
“…With iMAR, an accuracy of 4.1 to 5.5 mGal was achieved. With Litton LN-200, an accuracy of 4.5 mGal was achieved for 5 km spatial resolution [ 15 ].…”
Section: Introductionmentioning
confidence: 99%