Articles in the Mapping Category

Apr 2015 | No Comment

UAV (Unmanned Aerial Vehicle) is the latest photogrammetric system which has been used across many fields such as a military reconnaissance, heritage site documentation, a precise agriculture mapping, a construction site mapping, a real-time hazard mapping project, etc…

Jan 2015 | No Comment

UAVs in this study is a system which is divided into two sub-systems that are attached to the vehicle itself consisting of a camera, navigation instruments, etc…

Oct 2014 | No Comment

India was one amongst the few countries – including the advanced ones – to have completed topographic mapping on 1:50,000 and 1:25,000 scales, employing photogrammetric techniques, about four decades back. Since then there has been a tremendous progress in the field…

May 2014 | No Comment

National mapping policy 2005 has recommended the usage of UTM as projection for Open Series Maps (OSM), however there were reservations on adopting UTM for Defense Series Maps (DSM). Accordingly LCC with certain proprietary modifications was found suitable for DSM.

Nov 2012 | No Comment

Various nations have passed legislation that makes it possible for ruralcommunities to register their lands as a single legalentity and act as decentralized land administration and management bodies. However, due to various political, financialand capacity constraints, these laws are often not implemented successfully.

Sep 2012 | No Comment

Forest canopy density is an important criterion for forestry application. Several methods were introduced to compute these criteria. None manual methods use multispectral images to determine the canopy density. It also could be extracted from Arial images manually.

Aug 2012 | No Comment

Historical maps represent a valuable cultural and scientifi c heritage. Maps are much more than just physical representations of a territory at a certain time. Personal beliefs, political interests and cultural views are also a part of the message sent by maps through time.

Jul 2012 | Comments Off on Accuracy maintenance method for mobile mapping system data at GPS invisible area

Objective of accuracy investigation In this study, accuracy investigation of the corrected MMS measurement data by LMU and the mapping data derived from these corrected data were carried out to establish the most appropriate land mark point asignment (position intervaletc.) method at GPS invisible period. The target mapping scale is 1/500 and required accuracy is 25cm RMS for both horizontaland vertical.

Jun 2012 | No Comment

Roads are improved and maintained depending on its roles such as transport routes, minelayers of lifelines, refugee roads at disaster and also needs of users. To improve the roads safety and convenience, road authorities need the data to be used to comprehend 3D shape of the road space and its deformation quickly and accurately.

Feb 2011 | No Comment

In a modern mobile mapping system, the navigation component usually consists of a GPS receiver and an inertial navigation system (INS), which can provide accurate geo-referencing to the imaging sensors [1][2]. To achieve centimetre-level positioning accuracy, RTK-GPS is a natural choice. However, RTK-GPS in urban areas suffers from frequent outages due to blockages of either the GPS signals or the reference station radio links. In addition, multipath from buildings, trees and heavy vehicles could degrade the accuracy of the GPS when the vehicle is near them.