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Field Programmable Gate Array Based Parallel Strapdown Algorithm Design for Strapdown Inertial Navigation Systems [PDF]
Sensors, 2011 A new generalized optimum strapdown algorithm with coning and sculling compensation is presented, in which the position, velocity and attitude updating operations are carried out based on the single-speed structure in which all computations are executed at a single updating rate that is sufficiently high to accurately account for high frequency angular
Zongtao Li
exaly +7 more sources
Helicopter Test of a Strapdown Airborne Gravimetry System [PDF]
Sensors, 2018 Airborne gravimetry from a helicopter has been a feasible tool since the 1990s, with gravimeters mounted on a gyro-stabilised platform. In contrast to fixed-wing aircrafts, the helicopter allows for a higher spatial resolution, since it can move slower and closer to the ground.
René Forsberg, Tim Jensen
exaly +8 more sources
Long-Term Stability of the SGA-WZ Strapdown Airborne Gravimeter
Sensors, 2012 Accelerometers are one of the most important sensors in a strapdown airborne gravimeter. The accelerometer’s drift determines the long-term accuracy of the strapdown inertial navigation system (SINS), which is the primary and most critical component of ...
Shaokun Cai, Kaidong Zhang
exaly +4 more sources
An Adaptive Damping Network Designed for Strapdown Fiber Optic Gyrocompass System for Ships
Sensors, 2017 The strapdown fiber optic gyrocompass (strapdown FOGC) system for ships primarily works on external horizontal damping and undamping statuses. When there are large sea condition changes, the system will switch frequently between the external horizontal ...
Jin Sun, Yao Li, Tao Zhang
exaly +4 more sources
A Combination Scheme of Pure Strapdown and Dual-Axis Rotation Inertial Navigation Systems
Sensors, 2023 Compared with the strapdown inertial navigation system (SINS), the rotation strapdown inertial navigation system (RSINS) can effectively improve the accuracy of navigation information, but rotational modulation also leads to an increase in the ...
Hongyang He +3 more
doaj +2 more sources
SGA-WZ: A New Strapdown Airborne Gravimeter [PDF]
Sensors, 2012 Inertial navigation systems and gravimeters are now routinely used to map the regional gravitational quantities from an aircraft with mGal accuracy and a spatial resolution of a few kilometers. However, airborne gravimeter of this kind is limited by the inaccuracy of the inertial sensor performance, the integrated navigation technique and the kinematic
Meiping Wu, Kaidong Zhang
exaly +6 more sources
Observability of Strapdown INS Alignment: A Global Perspective [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2012 Alignment of the strapdown inertial navigation system (INS) has strong nonlinearity, even worse when maneuvers, e.g., tumbling techniques, are employed to improve the alignment. There is no general rule to attack the observability of a nonlinear system, so most previous works addressed the observability of the corresponding linearized system by ...
Yuanxin Wu, Dewen Hu, Meiping Wu
exaly +4 more sources
New Results from Strapdown Airborne Gravimetry Using Temperature Stabilisation
Remote Sensing, 2019 In recent years, the use of a strapdown Inertial Measurement Unit (IMU) for airborne gravimetry has proven itself to be an accurate and resilient measurement system, improving the operational flexibility.
René Forsberg, Tim Jensen
exaly +3 more sources
Strapdown Celestial Attitude Estimation from Long Exposure Images for UAV Navigation
Drones, 2023 Strapdown celestial imaging sensors provide a compact, lightweight alternative to their gimbaled counterparts. Strapdown imaging systems typically require a wider field of view, and consequently longer exposure intervals, leading to significant motion ...
Samuel Teague, Javaan Chahl
doaj +1 more source
Imagery Synthesis for Drone Celestial Navigation Simulation
Drones, 2022 Simulation plays a critical role in the development of UAV navigation systems. In the context of celestial navigation, the ability to simulate celestial imagery is particularly important, due to the logistical and legal constraints of conducting UAV ...
Samuel Teague, Javaan Chahl
doaj +1 more source