915 
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SYSTEM. 
tral boundaries that 
. The addresses or 
be such that they 
that there is no 
jister and, ideally, 
ints, houses, and the 
The utility lines 
lly recorded, of the 
sd with the aid of 
3 zoning which will 
enforced to control 
a parcel or parcels 
) between the rural 
r interest. 
the above data may 
>. The recording of 
ted to large scale 
e depicted by tonal 
IMAGERY 
aph for determining 
.alogue format while 
3 in digital format. 
Lai photograph into 
a resultant loss in 
also usually only 
.ainly panchromatic, 
the other imagery, 
ematic Mapper (ATM) 
many of the rural 
'.elus scanner which 
^solution of better 
3 including thermal 
ied in a satellite, 
i that it can be 
;o a site and await 
may, however, be a 
5.3 Satellite imagery 
With the increasing resolution of satellite imagery, for 
example with SPOT, this has increased to 10 metres in 
the single band. This data will be increasingly 
suitable for obtaining details of resources of rural 
areas. 
The SPOT imagery has the added advantage that it has 
stereoscopic potential and therefore the vertical 
dimension can be established. 
6 RECORDING RESOURCES FOR THE MULTI-PURPOSE CADSTRE 
The imagery referred to in the previous chapter will be 
suitable for recording those resources that exist on 
the surface of the earth. The limitation will be the 
resolution of the imagery, the size, shape, and the 
spectral signature of the object being recorded. All 
the descriptive data, names, property description, and 
ownership will have to be obtained from other sources. 
6.1 Using aerial photography 
The aerial photograph would primarily be used for 
producing the topographic or cadastral map where the 
boundaries are visible from the air. The position of 
houses and other improvements on the land can be 
established from the aerial photograph. With 
photographs in the thermal band it will be possible to 
detect water boundaries as well as the position of 
flood plains provided the data is collected close to 
flooding or the 'marks' are retained. 
6.2 Using airborne thematic mapper 
With the ATM having multiple bands a wide range of 
resources can be recorded. The thermal infra-red band 
can be used for detecting services and the image shown 
was used for this purpose. 
6.3 Using satellite imagery 
Many of the natural resources in rural areas can be 
recorded with satellite imagery. The second generation 
satellites have improved resolution and have 
stereoscopic capabilities. However, because of the 
resolution of the satellite imagery, compared with 
aerial photography, resources may only be recorded over 
larger areas than the average sized parcel. 
7 DATA FOR IMPROVEMENTS TO LAND PARCELS 
The data that is collected together for an MPC, which 
contains the resources related to land parcels, can be 
used for improvements. 
7.1 Digital terrain models 
By combining the three dimensional model, or Digital 
Terrain Model (DTM), with other details of the land 
parcel it will be possible to consider improvements. 
Such details as aspect, sun elevation and shadow, 
relative elevation, can be incorporated with the DTM. 
From the model it will be possible to establish the 
agricultural crops as related to the above details. The 
anticipated runoff and hence the storage of water in a 
catchment area can be determined, Information on the 
soils, vegetation has to be combined with data on 
slopes to determine runoff, these are some of resources 
that will need to be obtained. 
7.2 Consolidating land parcels 
When two or more land parcels are combined to make a 
Thermal infra-red image showing 
surface and indications of 
underground features 
viable unit the DTM can assist in establishing the new 
boundaries. The MPC can supply all of the data for 
each of the constituant parcels and the 'planes' of data 
can be added to the DTM to see if they are compatible. 
8 CONCLUSIONS 
* There will be a need for a dense network 
of boundary or network cpntrol within 
which the resources can be recorded. 
* The use of the airborne thematic mapper 
will enable more resources to be recorded 
and at a greater resolution. 
* That imagery in digital format, compatible 
with much of the other data is the most 
acceptable and manageable, 
* That data of resources in analogue format 
will have to be digitised to make it 
compatible. 
* Resources and services are contained below 
as well as above the surface of the earth 
and imagery to detect them is required. 
* The multi-purpose cadastre is an ideal 
data base in which information on rural 
resources can be stored. 
* By incorporating selected data from the 
multi-purpose cadastre with a digital 
terrain model improvements can be achieved 
for the land parcel.