Azmi Hassan, Mustafa Din Subari

With our universities and numerous polytechnics offering Geomatic program, more is expected from them

Azmi Hassan

Center for Technology Policy & International Studies,

Universiti Teknologi Malaysia,Malaysia

Mustafa Din Subari

Center for Technology Policy & International Studies,

Universiti Teknologi Malaysia,Malaysia

THERE seems to be numerous GNSS education and training programs around locally, with government’s institutions and agencies taking the …

November 2007
27th INCA International Congress
Visakhapatnam, India. 21-23 Nov 2007

The European Parliament has voted to boost funding for the European Institute of Technology (EIT) and Galileo, the European satellite navigation system, at its first reading vote on the draft budget for 2008. The MEPs voted to reverse over €1.5 billion of cuts made by the Council to payments under the headings 1a (competitiveness, growth, employment) and 1b (cohesion).

A company called Satski has launched GPS navigation system for skiers giving an interactive map of the mountain that will guide, assist and record movements. The system will constantly update the current position on the map, give statistics and record coordinates, altitude, speed, and distance.

Vodafone, has introduced two of its Blackberry models, Curve 8310 and 8820 in India, recently. Curve 8310 is RIM’s latest innovation for customers who demand a featurerich multimedia and GPS-enabled smartphone.

High Tech Computer Corp. launched HTC P3300, a GPS phone in India. It allows users to take pictures outdoors and then automatically embeds the satellite coordinates into the picture. The MapKing R12 is the mobile mapping system which comes with the P3300.

INDUSTRY | LBS | GPS | GIS | GALILEO UPDATE

Magellan introduces its CrossoverGPS
Magellan, enters the consumer driver space with its CrossoverGPS, it caters for road, hiking/off-road and nautical
navigation. It comes with high battery life and with a ruggedised sleeve to protect from drops and the map data comes
from Navteq.
www.magellangps.com
Topcon GTS-750 and GMS-2 Pro …

JUPEM is working in tune with new technologies. One of the biggest project is e-Cadastre project. The project has started this year and will be completed by the end of next year. The project envisages a complete digital cadastral database of high quality and integrity. For this purpose, advance techniques and methodologies have been employed like GPS etc.

According to various reports, a significant number of graduates
in India are not suitable for employment.
This is not a happy state of affairs;
We have an education system that is inadequate for skill development.

Since the staring of GPS, many researchers have investigated its application in aerial photogrammetry. Today, with the full constellation of 24 GPS satellites operational, enabling excellent satellite geometry any time of the day, the need to apply the full potential of GPS for real time aircraft navigation and photogrammetric mapping can be realized. The use of GPS to determine relative positional data for ground control points in a photogrammetric block adjustment is widely accepted and practiced. The camera exposure station coordinates derived by Airborne Kinematic GPS drastically reduces, the number of horizontal and vertical control points needed in aerial triangulation.

In large-scale mapping, the accuracy level of control data required is very high. The lag in time between the camera exposure and the GPS epoch recording in the GPS receiver is critical in deriving accurate coordinates for the exposure station (principal point) coordinates. Due to delay in the electronic transfer of data from camera clicking to GPS receiver in recording the event makes the Lag in time to occur. To meet the high accuracy requirements for the largescale photography and mapping projects the lag in GPS recording time should be derived and applied. In this study, an attempt is made to compute the Lag-time in airborne kinematic GPS derived exposure stations from aerial triangulation.

Aerial triangulation is carried in Digital Photogrammetry work station with conventional method of using ground control points, and the exposure station coordinates are derived. Lag-time is computed by finding difference in coordinates of exposure stations derived from conventional aerial triangulation and from airborne kinematic GPS. The results of this project will help to improve the locational accuracy of GPS derived exposure stations in aerial triangulation.
Methodology

Aerial photography is carried out in the study area on 1:6000 scale with forward overlap at 60% and lateral overlap at 20% using RMK TOP30/23 camera. During aerial photography the airborne GPS is operated to record the exposure coordinates.

The computer controlled navigation system (CCNS) is loaded with flight planning data from World Wide Mission Planning (WWMP). During aerial photography CCNS takes coordinates of aircraft position from navigation system and navigate pilot for alignment as per flight plan. Based on navigation coordinates, CCNS sends signals to camera for exposure. The camera exposure system is connected to Trimble 4000 SSI dual frequency GPS system on board, which records GPS data continuously at 1.0sec sampling rate. During the camera exposure, camera system sends signal to the onboard GPS system, which record each exposure as an event marker in the GPS