The Journal of Global Positioning Systems
1446-3164
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
A hybrid error modeling for MEMS IMU in integrated GPS/INS navigation system
Tập 16 - Trang 1-12 - 2018
Continuity of accurate navigational data for intelligent transportation
applications has been widely provided by utilizing low-cost navigation systems
through integrating GPS with micro-electro-mechanical-system (MEMS) inertial
sensors. To achieve the required accuracy, augmentation of Kalman filter (KF)
with nonlinear error modeling techniques such as fast orthogonal search (FOS)
was introduced t...
Review of triple-frequency GNSS: ambiguity resolution, benefits and challenges
Tập 16 - Trang 1-11 - 2018
Triple-frequency GNSS has been intensively studying in the past decades,
especially with the open service of China’s BeiDou system. In this review, we
will address the ambiguity resolution, benefits gained from additional frequency
signals compared to the dual-frequency GNSS signals, as well as analyse the
challenges of triple-frequency GNSS for future development. We first review and
compare the ...
Camera auto-calibration in GPS/INS/stereo camera integrated kinematic positioning and navigation system
Tập 14 - Trang 1-15 - 2016
This paper presents a novel two-step camera calibration method in a
GPS/INS/Stereo Camera multi-sensor kinematic positioning and navigation system.
A camera auto-calibration is first performed to obtain for lens distortion
parameters, up-to-scale baseline length and the relative orientation between the
stereo cameras. Then, the system calibration is introduced to recover the camera
lever-arms, and...
A posteriori estimation of stochastic model for multi-sensor integrated inertial kinematic positioning and navigation on basis of variance component estimation
Tập 14 - Trang 1-12 - 2016
Improving a priori stochastic models of the process and measurement noise
vectors in Kalman Filer (KF) has always been a challenge. As one preferable
technique to address this challenge, the variance component estimation (VCE)
applied on the Kalman Filter’s process and measurement noise covariance matrix
(Q & R) has been proved in plenty of applications. Unsurprisingly, VCE was
expected to re-esta...
Development of a GPS spoofing apparatus to attack a DJI Matrice 100 Quadcopter
Tập 16 - Trang 1-11 - 2018
Global Positioning System (GPS) Spoofing attacks threaten technologies that our
modern society depends on. To successfully develop defensive mechanisms against
these attacks, methods to model the attacks and subsequently distinguish them
from normal GPS operation must be developed. This paper primarily details the
step-by-step implementation of a low-cost GPS spoofing and high-level spoofing
data ...
Regional ionospheric modeling using wavelet network model
Tập 15 - Trang 1-10 - 2017
A major error component of Global Positioning System (GPS) is the ionospheric
delay. Ionopspheric error can be reduced by a dual frequency receiver using a
linear combination technique that can not be applied with a single frequecy
receiver. However, an accurate ionospheric error modeling for single-frequency
receiver is required. Due to the nonlinearity of the ionospheric error, a highly
nonlinea...
Performance analysis of GNSS multipath mitigation using antenna arrays
Tập 14 - Trang 1-15 - 2016
Multipath affects the shape of the correlation function and results in biased
pseudorange measurements and erroneous navigation solutions. Antenna array
processing, which uses signal spatial characteristics, is an effective method to
mitigate various types of interference signals. However, the performance of most
of the distortionless beamforming techniques degrades in multipath conditions
due to ...
Adaptive cubature Kalman filter based on the variance-covariance components estimation
Tập 15 - Trang 1-9 - 2017
Although the Kalman filter (KF) is widely used in practice, its estimated
results are optimal only when the system model is linear and the noise
characteristics of the system are already exactly known. However, it is
extremely difficult to satisfy such requirement since the uncertainty caused by
the inertial instrument and the external environment, for instance, in the aided
inertial navigation. I...
Accuracy analysis of GPS/BDS relative positioning using zero-baseline measurements
Tập 16 - Trang 1-8 - 2018
This paper focuses on assessing the precision of carrier phase relative
positioning using GPS-only, BDS-only and GPS/BDS measurements. A zero baseline
is used in order to achieve this. Software for GPS and BDS processing has been
developed, allowing static and kinematic data processing, as well as the
combined GPS and BDS processing. Ionospheric and tropospheric delays are
significantly reduced by...