搜索结果: 1-11 共查到“航空、航天科学技术 error”相关记录11条 . 查询时间(0.062 秒)
QUANTIFYING THE CONTRIBUTIONS OF ENVIRONMENTAL PARAMETERS TO CERES SURFACE NET RADIATION ERROR IN CHINA
CERES surface net radiation China environmental parameters error contributions
2018/5/15
Error source analyses are critical for the satellite-retrieved surface net radiation (Rn) products. In this study, we evaluate the Rn error sources in the Clouds and the Earth’s Radiant Energy System ...
The original protection level equations for SBAS assumed that all actual error distributions could be easily overbounded by zero-mean gaussian distributions. However, several error sources have since ...
Overbounding SBAS and GBAS Error Distributions with Excess-Mass Functions
Overbounding SBAS GBAS Error Distributions Excess-Mass Functions
2015/6/26
Safety-of-life GNSS augmentation systems must provide bounds on the probability with which hazardous navigation errors occur. This paper develops conservative bounding methods both for space-based aug...
Error bound optimization using second order cone programming
Error bound optimization second order cone programming
2015/6/26
In safety of life applications using satellite navigation, the Protection Level (PL) equation translates what is known about the pseudorange errors into a hard bound on the positioning error (the Prot...
Formulation of a Time-Varying Maximum Allowable Error for Ground-Based Augmentation Systems
Time-Varying Maximum Allowable Error Ground-Based Augmentation Systems
2015/6/26
Ground-Based Augmentation Systems (GBAS), such as the Federal Aviation Administration’s Local Area Augmentation System (LAAS), ensure integrity by enabling users to compute a conservative navigation e...
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
2015/6/25
The modernization of GPS and the addition of new GNSS constellations bring forth a multitude of new signals with new capabilities. One of the intended purposes of some of these new signals is the prov...
Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
Evaluation Signal Space Error Bounds Support Aviation Integrity
2015/6/25
In order to make use of signals over which they have no control, aviation authorities must have a clear understanding of the commitments and capabilities of these new signals. This paper proposes equa...
GPS Ephemeris Error Screening and Results for 2006–2009
GPS Ephemeris Error Screening Results
2015/6/25
For the Global Positioning System (GPS), real-time satel-lite orbits and clock biases are derived from predicted ephemeris and clock parameters in broadcast navigation messages. The performance of bro...
Several Satellite Based Augmentation Systems are currently being used by the aviation community or under development around the world. WAAS which covers US airspace currently provides the capability t...
Evaluation of a covariance-based clock and ephemeris error bounding algorithm for SBAS
Evaluation covariance-based clock ephemeris error bounding algorithm SBAS
2015/6/24
The largest source of error uncertainty in current Space-based Augmentation Systems, which are single frequency (L1), is the ionospheric delay. In the coming years, the deployment of new signals in L5...
Remote Synchronization Simulation of Onboard Crystal Oscillator for QZSS Using L1/L2/L5 Signals for Error Adjustment
Onboard Crystal Oscillator QZSS L1/L2/L5 Signals Error Adjustment
2009/9/3
A new error adjustment method for remote synchronization of the onboard crystal oscillator for the quasi-zenith satellite system (QZSS) using three different frequency positioning signals (L1/L2/L5) i...