Table 4 
Air |Flight scale for revision of plans 
cam | (maps) of scales 
era 
focal 
long 4 : 500 | 11000 | 1: 2000 |4 : 5000 | 4: 40 000 
mm 
70 |- - - 1:12 000 | 1:14 000 
100 |1:2500 | 1:4500 |1:6000 |1:10 000 | 1:12 000 
140 |1:2500 | 1:4500 | 1:6000 |1:10 000 |1:11 000 
200 |1:2500 | 1:4000 | 1:5000 |1:10000 | 1:10 000 
  
  
  
regulations of flying over detected; air survey flights 
and all the procedures necessary with respect to 
time and dates of flights, radio communication and 
acquisition of meteo information should be agreed 
with the local control bodies. During reconnaissance 
326 
flights a video film or a number of photographs taken 
by a miniature camera for peculiar terrain features 
are to be produced. Those flight strips considered to 
be the most complicated are planned as combined 
ones i.e. they should be accomplishrd as air visual 
surveying flights, and the results should be checked 
against those of field interpretation. 
It is advantageous to use MDP for expeditious plan 
and map revision in the cases where other air 
carriers are not economically efficient to be 
employed due to different reasons such, for 
example, as dates of map revision fixed by a user 
(from three months to one year), sizes of an terrain 
area to be revised, the amount of changes and a 
variant of the work. Timely revision with using MDP 
can be practised for urban small territories, town 
surburb areas of intensive summer cottage 
constructions, villages, developing industrial 
areneeded. 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996 
  
KEY 
ABS 
A me 
effici 
data 
class 
high 
Sup: 
thea 
Itisi 
imac 
moni 
that 
accu 
likelil 
on tl 
satis 
the it 
clas: 
meth 
assu 
as hi 
Here 
and | 
Disc 
expa 
func 
bour 
tech 
1995 
dens