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(SR-52) Data Reduction cave survey - Printable Version

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(SR-52) Data Reduction cave survey - SlideRule - 09-04-2020 09:20 PM

An excerpt from Reducing Cave Survey Data with a Hand Calculator, ASF Newsletter, Autumn, 1977, No. 75, pgs. 2-14

"ABSTRACT
    The recent advent of a wide range of small electronic calculators greatly facilitates the mathematical reduction of survey data into X, Y and Z co-ordinates for plotting on a grid. presented here are the formulae and methods used for reducing traverse data, closing networks and simple loops, and triangulating inaccessible points. An appendix lists a series of programs for use with the Texas Instruments SR-52 programmable calculator.

                                APPENDIX
SUMMARY OF PROGRAMS FOR THE SR 52 CALCULATOR

    The following programs were written specifically for the SR 52, but should be adaptable to other calculators provided they have sufficient memory registers and a long enough program memory (c.f. table 1). As the specific sequence of key steps would tend to vary from one calculator to another, only generalised flow charts are presented here.

THE PROGRAMS

The TAPE TRAVERSE program …

The NETWORK CLOSURE program …

The SEGMENT or LOOP CLOSURE program …

The TRIANGULATION program …

These programs should be usable in similar or simplified form in a number of other programmable hand calculators. They could also be used (and expanded) with programmable desk-top calculators …
"

errata, page 12 ASF News Winter, 1977 No, 76

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