in pratice, we have to consider how
to further proceed with them.
Without doubt, the availability of new
equipment, its efficiency and
price/performance ratio will be
decisive criteria as to whether
- available equipment will be
upgraded, or
- new equipment will be purchased
and the old one rejected.
It is necessary to distinguish between
9 the modernization of existing
equipment, e. g. by the exchange of
obsolete computers and software for
new ones, or the replacement of
mechanically connected drawing
tables by electronically controlled
plotters, and
0 the complementation of existing
equip-ment, e. g. the extension of the
viewing system of stereoplotters by
superimposition or a higher viewing
magnification.
2. Subject of upgrading
2.1. Analog, opto-mechanical stereo-
plotters
This category of instruments, which
were produced approximately
between 1965 and 1985, includes
among others:
Stereometrograph, Topocart: Zeiss-
Jena
Planimat, Planicart:Zeiss- Ober-
kochen
Autograph A7, A8, A10, B8,
Aviomap: Wild
PG FG3S Kern
G6, G7. GS; Galileo
IIC, III, IV:Santoni
SFP, SDF:OMI
Typical complementations/extensions
made on these instruments:
7 Digital output of the X, Y and
Z coordinates for transmission to a
coordinate recording instrument, a
PC or an electronically controlled
digital drawing table
- Digital output of the photo
coordinates x, VW, XX, y" for
transmission to a coordinate
recording instrument or a PC (e. g.
for analytical aerotriangulation)
- Digital input of the orientation
data ¢, œ, x, bx, by, bz (received
from
aerotriangulation Or computer-
assisted orientation) into a plotter
- Conversion of analog into
analytical plotters
- Expansion of the optical
system to allow simultaneous obser-
vation of photo and map (superimpo-
sition)
- Increase of the viewing magni-
fication, e. g. in the case of the PG 2
from 2X - 4X - 8X (standard) to
3X-6X-12X or 4X-8X- 16X.
2.2 Analytical plotters
The older instruments of this
category, produced approximately
between 1980 and 1985, include
among others:
Planicomp C 100:Zeiss Oberkochen
Aviolyt AC 1, BC 1, BC 2:
Wild
DSR 1:Kern
APC 3, 4, 5: OMI
Digicart, Stereocart:Galileo
Traster:Matra
SD-4:QASCO
Typical complementations/ moderni-
zations:
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for
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