(25) … Linear Regression Analysis of Glide Slope Structure

03142019, 11:29 AM
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(25) … Linear Regression Analysis of Glide Slope Structure
An extract from A Procedure for RTT Position Improvement using Linear Regression Analysis of Glide Slope Structure, AFCC/FFNM (Scott AFB), RN 82/665277, May 1982 (72 pgs)
ABSTRACT: This report presents a method to improve the position of a Radio Telemetering Theodolite (RTT) through an analysis by linear regression of the observed glide path structure of an instrument landing system … TABLE of CONTENTS: … 8. HP25 Program for Linear Regression … 4. Use of the Linear Regression by Flight Inspection and TRACALS Evaluation Personnel: a. There are two handheld calculators presently in the Air Force inventory used by flight inspection as well as TRACALS evaluation personnel to perform linear regression and average angle calculations during flight inspections or TRACALS evaluations. These two calculators are the HewlettPackard Model HP25, NSN 7420 PHP25, and the Texas Instruments Model TI59, NSN 7420 01 054 4382. Procedures for using the HP25 calculator to solve linear regression and average angle are presented in Attachment 8. A program written for the TI59 calculator to compute linear regression, new RTT placement, and average angle is presented in Attachment 9. A program is also 10 presented in Attachment 10, written in Applesoft BASIC for an Apple computer. In addition, other programmable calculators can be used to perform linear regression and average angle calculations … ATTACHMENT 8 HP25 PROGRAM FOR LINEAR REGRESSION This program is based on the HewlettPackard HP25 program for linear regression. It has been slightly modified to compute the average light line value as well as the regression constants … Below is the key sequence for the program itself. The next page provides instructions for using the program. It is assumed the user is familiar with the operation of the HP25 programmable calculator … An excellent adjunct / refresher for all pilots  excellent documentation on glide slope! BEST! SlideRule 

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