Derivation of Ranging Source Integrity Requirements for the Local Area Augmentation System (laas)
نویسندگان
چکیده
Several satellite latent fault modes can cause errors that may not be removed by pseudorange corrections or be detected unless special augmentation-based integrity monitors are employed. The error classes resulting from satellite fault modes are distorted signal waveform, uncorrectable ephemeris error, excessive clock acceleration, excessive code-carrier divergence, and low signal power. The paper derives the integrity monitoring parameters for these errors through mathematical analyses and error bounding rationales. The integrity parameters are the maximum allowable error in the pseudorange corrections and the probability of missed detection of this error. The inputs to the analyses are the integrity monitoring operational requirements contained in the Minimum Aviation System Performance Standards for the Local Area
منابع مشابه
Future Outlook for WAAS and LAAS
Over the past decade, two separate approaches have been developed to augment the Global Positioning System to meet the accuracy, integrity, continuity, and availability needs of civil aviation users. One utilizes a network of reference stations spread across a large area and derives a single set of differential corrections that is relayed to users via GPS-like signals from Geosynchronous (GEO) ...
متن کاملLAAS Position Domain Monitor Analysis and Test Results for CAT II/III Operations
The Local Area Augmentation System (LAAS) is a differential GPS navigation system being developed to support aircraft precision approach and landing with guaranteed accuracy, integrity, continuity and availability. While the system promises to support Category I operations, significant technical challenges are encountered in supporting Category II and III operations. The primary concern has bee...
متن کاملVertical Protection Levels for a Local Airport Monitor for WAAS
Certification challenges and higher than anticipated development costs for the Local Area Augmentation System (LAAS) have motivated the investigation of alternative approaches for achieving Category I precision approach and landing service. One proposed alternative is the Local Airport Monitor (LAM). This concept would rebroadcast Wide Area Augmentation System (WAAS) differential corrections in...
متن کاملGidl: Generalized Interference Detection and Localization System a Dissertation Submitted to the Department of Aeronautics and Astronautics and the Committee on Graduate Studies of Stanford University in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy
The Local Area Augmentation System (LAAS) and the Wide Area Augmentation System (WAAS) are being developed by the U.S. Federal Aviation Administration (FAA) to provide satellite navigation performance compliant with the stringent requirements for aircraft precision approach and landing. A primary design goal of both systems is to insure that signal-in-space failures are detected by ground facil...
متن کاملEnabling the LAAS Differentially Corrected Positioning Service (DCPS): Design and Requirements Alternatives
The Local Area Augmentation System (LAAS) can be used for both precision approach and Differentially Corrected Positioning Service (DCPS) applications. Through its support of DCPS, the LAAS Ground Facility (LGF) is required to meet the integrity requirements of all other operations that can receive the LAAS VHF Data Broadcast (VDB). Our previous work demonstrates that the DCPS integrity require...
متن کامل