Accession Number:

ADA172305

Title:

Characteristics of Altitude Error at Reduced Quantization.

Descriptive Note:

Final rept.,

Corporate Author:

FEDERAL AVIATION ADMINISTRATION WASHINGTON DC PROGRAM ENGINEERING AND MAINTENANCE SERVICE

Personal Author(s):

• Wong,Gene A.

Report Date:

1986-08-01

Pagination or Media Count:

34.0

Abstract:

This report describes an analysis of the impact of reducing the quantization level on the altitude error produced by the aircrafts altimetry system. Specifically, the mean and the standard deviation of the altitude error at the output of the aircrafts onboard quantization device are derived assuming altitude error at its input is normally distributed. The formulae derived are very general, exact, and applicable to all ranges of input statistics and quantization levels. A computer program has been written to evalute the impact of reduced quantization levels. Additionally, a comparison is made between the commonly used and approximate uniform distribution model method and the exact formulae derived in this report for calculating the quantized altitude error. Keywords TCASTraffic Alert and Collision Avoidance Systems.

Descriptors:

• *ERRORS
• *QUANTIZATION
• *ALTIMETERS
• COMPUTER PROGRAMS
• INPUT
• AIRCRAFT
• STATISTICS
• AIR TRAFFIC CONTROL SYSTEMS
• REDUCTION
• STATISTICAL DISTRIBUTIONS
• ALTITUDE
• COLLISION AVOIDANCE
• ONBOARD
• STANDARD DEVIATION
• WARNING SYSTEMS

Subject Categories:

• Statistics and Probability
• Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE