ITEMS OF CADASTRAL COMPUTATIONS IN THE PBLIS OF
KCSC
Prof. Byungguk KIM, Kwang-Seok KWON and
Donghoon JEONG, Korea
Key words: LIS, Cadastral Computations, PBLIS, KCSC.
Abstract
Introduction
Public land surveying (cadastral surveying) in Korea is performed
exclusively by the KCSC (Korea Cadastral Survey Corporation). The KCSC
deals with 31,331,000 parcels of land and 3,420,000 parcels of forest
(or forestry land) as of the year of 2000. The total of 34,751,000
parcels are recorded and maintained in the forms of "cadastral
records" and "cadastral maps", and also are registered
in the local registry offices, which is under the local courts.
(Cadastral records consist of 'land records', 'house records', and
'forest records'; Cadastral maps consist of 'land maps' and 'forest
maps') and the KCSC is in charge of managing the records and the maps
as well as surveying and updating the parcel maps.
The KCSC is encouraged to develop a Parcel Based Land Information
Systems (PBLIS) using the digitized records and the digitized maps.
The project began in 1997 and parts of the system (the land surveying
session assistant module and the land surveying computation module)
came into being existence, and the test version of the system is out
to the users for debugging purpose.
In this paper, the items necessary for land surveying measurements
and computations are collected and implemented for the perspective
PBLIS. The screens for the data input, computations, and display are
also developed.
Item Development
Computation items were developed after interviewing the surveyors
in the KCSC. Almost all the computation items they use in preparation,
in field work, in office work, and in recording and map making are
believed to be identified including the frequently used items, time
consuming ones and complex ones. In the job procedure, "field
surveying and recording" is the one this paper is focused on. The
field surveying can be classified in two categories, control point
surveying and detail surveying, and each of which has 3 and 6
sub-categories respectively.
A computation function can be used in SM (Cadastral Triangulation),
BO (Cadastral Complementary Triangulation), DO (Supplementary Control
Surveying), and/or SE (Detail Surveying). In the case of complementary
triangulation, it uses most of functions for the triangulation and the
supplementary control surveying, but the computational accuracy
differs a little.
Conclusions
Items of cadastral survey computations, as parts of the PBLIS, are
developed and modules are implemented for inputting data, computation
and adjustment, and outputting in certain formats. The process adopted
in the development is resembling the process currently being used by
the KCSC surveyors in the manual manner. It is found to be necessary
to revise the way of data collection, input and output formats (by
revising the provisions of laws) because there are many cases that the
old method are no longer valid in the new era of computers and DB
environment. The cases are: logarithm calculations for the
trigonometric al functions, repeated steps and writings of the
calculations, rounding offs after every calculations and significant
figures problem, and the provisions of sketch maps. Also, GPS data
collection and process must be considered and included in the modules.
CONTACT
Assoc. Prof. Byungguk Kim, Ph.D. PE
Dept. of Geoinformatic Engineering
INHA University
Yonhyun-dong
Nam-gu
Incheon 402-751
KOREA
Tel. + 82 32 860 7603
E-mail: Byungkim@inha.ac.kr
Kwang-Seok Kwon
Department of Geoinformatic Engineering
INHA University
Yonhyun-dong
Nam-gu
Incheon 402 751
KOREA
Tel. + 82 32 865 5110
Fax + 82 863 1506
E-mail: kskwon002@hanmail.net
Donghoon Jeong
Department of Geoinformatic Engineering
INHA University
Yonhyun-dong
Nam-gu
Incheon, 402-751
KOREA
Tel. + 82 32 865 5110
Fax + 82 863 1506
Email: g2001331@inhavision.inha.ac.kr
23 March 2001
This page is maintained by the
FIG Office. Last revised on 10-11-05.
|
