Abstract
ESTABLISHMENT OF SECOND ORDER CONTROLS FROM OLORUNSOGO COMMUNITY IN AWE TOWN TO IDI-MANGORO VILLAGE ALONG OYO-IWO ROAD, AFIJIO LOCAL GOVERNMENT AREA, OYO STATE OF NIGERIA
Afonja Y. O., Amusa I. A.*, Akindiya O. M., Nmeregini C. S.
ABSTRACT
The study established Second Order Controls from Olorunsogo Community in Awe town to Idi- Mangoro village along Oyo-Iwo Road, Afijio local government area of Oyo State. The study extended the already established Second Order Controls from Olorunsogo community Awe town to Idi-Mangoro village along Oyo/Iwo road with approximate distance of 5Km. The study is necessary due to development activities; and also the problem of insufficient controls within the area. These factors necessitated the need to establish Second Order Control so as to provide the relevant controls in which subsequent lower order jobs can be tied around the area and also for proper mapping of the area. The study was carried out by adopting the specifications for Second Order Control extension using GPS. The field data were downloaded from Trimble R6 GPS instrument into computer system using Trimble data transfer software. The data from reference and the rover were downloaded. After downloading, Hi-Target Geomatic Office software was used for processing of downloaded data. The results were obtained and sorting out for data transformation from Geodetic Coordinates to Universal Traverse Mercator (UTM). The downloaded data were converted to Rinex Format such that it can be handled by Hi-Target Geomatic Office for further processing. The result of data obtained from the adjusted data was analyzed and the result proved reliable as the unit variance and standard error values fall within allowable limits. Back computation was done from the final adjusted coordinates in order to obtain corrected bearings and distances in-between successive controls. The results obtained from the Excel program and HI-Target Geomatics Office software were compared and the discrepancies were negligible. With the various results generated in the course of the study, it is an indication that the linear accuracy was reliable.
[Full Text Article] [Download Certificate]