Accession Number : AD0758786

Title :   Analysis of Data Rate Requirements for Low Visibility Approach with a Scanning Beam Landing Guidance System.

Descriptive Note : Technical rept. Aug 69-1 Jul 72,

Corporate Author : AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Dillow,James D. ; Stolz,Paul R. ; Zuckerman,Meyer D.

Report Date : FEB 1973

Pagination or Media Count : 172

Abstract : Data rate requirements for low visibility approach with a sample data measurement of glideslope deviation are investigated analytically. A 'window' is defined by specifying certain allowable deviations in the aircraft motion variables which are acceptable for continuation of the landing at a 100-ft-decision altitude. The approach performance is defined as the probability of missing the window, which corresponds to the probability of a missed approach. The landing approach process is modeled by a system of stochastic differential equations, which account for the aircraft dynamics, atmospheric disturbances, guidance errors, and data rate. The flight control system is modeled by a state estimator and a state feedback matrix which is optimized so as to minimize the probability of a missed approach subject to rms constraints on control activity. (Author Modified Abstract)

Descriptors :   (*GLIDE PATH SYSTEMS, *RADAR SCANNING), (*TERMINAL FLIGHT FACILITIES, *RADAR LANDING CONTROL), AIR TRAFFIC CONTROL SYSTEMS, FLIGHT CONTROL SYSTEMS, INSTRUMENT LANDINGS, GUST LOADS, EQUATIONS OF MOTION, MATHEMATICAL MODELS, OPTIMIZATION

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE