nrsc 16_flyer_asdma.pdf

8/20/2019 NRSC 16_Flyer_ASDMA.pdf

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National Remote Sensing entre

nrsc

Aerial Services & Digital Mapping

NRSC - Factsheet A - 16 (Jan, 2014)

AS&DM has a fleet of two pressurized twin-turbopropBeechcraft B-200 aircraft specially modified with opticalports, pressure box and antennas to install various airborne

sensors and can carryout aerial surveys upto an altitude of 29000 ft.

NRSC Aircraft

Aerial Services & Digital Mapping Area (AS&DMA) of National Remote Sensing Centre (NRSC) of Indian Space Research

Organisation (ISRO) is the civilian Government entity in the country with end-to-end state-of-the-art infrastructure and

capability in the domain of Aerial photography, LiDAR (Light Detection and Ranging) and Synthetic Aperture Radar (SAR)

surveys. Since coming into existence in the year 1975 as Research Flight Facility (RFF) to carry out research and aerial surveys

in India, this area is keeping itself up to date in incorporating latest technologies in line with the ever changing user

requirements. At present, this facility is engaged in the generation of geodatabases required for Disaster Management

Support Programme (DMSP) as well as supporting special scientific missions such as atmospheric studies, calibration of sensors

and navigational instruments used in space missions.

Sensors

The facility has a wide variety of sensors that can acquire

the required terrain information. The data acquisition

capabilities include day and night operating sensors to

measure terrain height, cloud penetrating sensors and multi

spectral imaging.

The facility has imaging/non-imaging and active/passive

sensors such as

• Large Format Digital Camera (LFDC)

• Airborne Synthetic Aperture Radar (ASAR)

• Hyper spectral Imaging

• Laser Scanner with Digital Camera (LSDC)

The data will be further processed to generate value added

products. In addition to standard sensors, the aircraft is also

used for atmospheric studies using multiple monitoring

instruments and for test and evaluation of sensors designed

for airborne as well as space based applications. AS & DMA

also supports special scientific missions.

Data Acquisition

Electronics

GSM 3000

Mount

CCNS &

Aerocontrol

Power

console

Ultracam-D

Data processing facilities

AS&DM has large geospatial database generation facility

having modern data processing and mapping capability

in the areas of airborne data processing, GPS processing,Photogrammetry and GIS. It is supported by highly

qualified and trained professionals in the following areas

to carry out the projects to international standards:

• Flight planning

• Aerial data preprocessing

• High precision scanner

• High end Digital Photogrammetry systems

• Ground control survey facility for collection and

Data processing for Short, Long baselines &

Precise Point Positioning of GPS data

•

CAD/GIS facility• QA/QC team

NRSC Aircraft

LFDC installation in the aircraft

Flight planSystem installation

GPS data collection Digital Photogrammetry lab




Capabilities

AS&DM provides mapping and GIS services from airborne

and high resolution satellite data. The core strength of this facility is its ability to provide complete end-to-end

geomatics solutions under one roof from data acquisition

to value added products . The salient features are

• Capability to acquire images of photo scales from

1:400 up to 1:40,000, having resolutions from 5cm

to 80cm

• Capability to provide terrain height information up

to an accuracy of 15 cm with high point density.

• The facility can process the data using the state of

the art processing photogrammetry/ other

advanced methods to generate Digital Elevation

Models (DEMs) and maps.

• Generation of high resolution topographical maps,

GIS data bases which are useful in utility planning,

disaster applications etc.

• Value addition such as 3D city models and

flythrough for better visualization.

• Expertise in collection and processing of precise

ground control points (GCPs) using Geodetic GPS

receivers.

• Support for special scientific missions such as

atmospheric studies, calibration of sensors and

navigational instruments used in future space

missions is also provided by this facility.

LFDC image of Salarjung Museum , Hyderabad (5 cm GSD)

Services

The major services provided by AS&DM

• Aerial surveys using various airborne sensors such

as LFDC and Airborne LiDAR

• Generation of large scale digital topographic maps

• High resolution Digital Elevation Models (DEMs)

• GIS services with aerial data

• 3D city models and flythrough

Generation of large scale 2D/3D maps for various

national and international projects such as flood plain

mapping for Disaster Management Support

Programme, coastal zone mapping for Tsunami

Warning Systems, 3D utility mapping for e-governance

for major cities, creation of topographic map for

Maldives, rail corridor feasibility study for Katra-

Qazigund etc., were carried out.

LFDC image of Buddha statue, Hyderabad (5 cm GSD)

Lumbini park, Hyderabad

Corresponding map Corresponding 3D model




Flood Plain Mapping for Disaster Management

The high resolution DEMs

generated under this project

are used in Flood

Management Information

systems for flood modeling

and flood risk assessments.

• Generated high resolution

DEM and GIS spatial

database of 30,000 sq. km

of area using data from

Laser Scanner with Digital

Camera (LSDC). The areas

covered include parts of Mahanadi, Godavari, Ganga

and Brahmaputra river

basins.

• Generation of DEM for

another 30,000 sq.km of

area under DMSP is in

pipeline.

Aerial Data for Cadastral Resurvey

This pilot cadastral resurvey applications was carried out

for Survey Settlement & Land Records, Government of

Andhra Pradesh towards an Integrated Land Information

System (ILIS).

• Cadastral Resurvey of Nizamabad district of Andhra

Pradesh covering an area of 6600 sq. km. using aerial

photography (1:10000) & Photogrammetry techniques.

• A seamless ortho product with an accuracy of 25cm was

made for the entire district.

• Unique project and first of its kind in the country, taken

up for such a large area. Has demonstrated the aerial

survey technology for Cadastral resurvey applications.

Point cloud Surface model Elevation model

Close contour2D mapOrtho image

Major projects

Aerial photography & 3D utility mapping

The data generated from this project is used in

water and sewerage management, transportation,

revenue tax collection, and other location based

services in their day-to-day operations and in

future planning and development.

• Created large scale 3D spatial at 1:1000

(including attribute information) for Hyderabad,

Bengaluru and Kolkata from Aerial Photographs

of 1:6000 for National Informatics Centre (NIC).

• Detailed floor level mapping was carried out

using Photogrammetry techniques.

Cadastral map of part of Nizamabad district

Charminar, Hyderabad

and surroundingsCorresponding 3D model

Sample products of Paradip port, Odisha



www.nrsc.gov.in

www.bhuvan.nrsc.gov.in


International project carried out for the Ministry of External

Affairs (MEA), Government of India.

• The Maldives archipelago comprises of 1189 Islands having

300 sq. km of land area spread over 80,000 sq. km of

ocean, hence was a challenge to extend photogrammetric

control.

• NRSC had acquired Aerial photography in 1:40,000 scale for

entire Republic of Maldives and 1: 6000 scale for selected

islands.

• Digital maps of 1: 25,000 scale for entire Republic of

Maldives & 1: 1000 scale for selected islands were

prepared.

Aerial Photography and Mapping of Republic of Maldives

For further details contact:

General Manager

Aerial Services and Digital Mapping Area

National Remote Sensing Centre

Balanagar, Hyderabad 500037

Phone: +91 (0)40 2388 4470/71

Fax: +91 (0)40 2388 4483

e-mail: [email protected]

Survey sorties for atmospheric research have been conducted for Regional Aerosol

Warming Experiment (RAWEX)

• To characterize elevated layers of aerosol over the Indian region, their

amplitude, frequency of occurrence, seasonal trends and gradients.

• To quantify the contribution of absorbing aerosols (dust and black carbon) in the

regional warming.

• Estimation of the radiative impact of the elevated aerosol layers and assess the

climate implications, including its impact on the commencement advance and

distribution of Indian monsoon.

• CO2 sensor data is also collected along with other atmospheric sensors.

Atmospheric Research

Airborne Synthetic Aperture Radar surveys

The SAR sensor is used to generate data products in disaster

scenario for damage assessment, relief & rescue operation.

• Conducted test flights of Development Model of airborne

Synthetic Aperture Radar (DM-SAR) developed indigenously by

Space Application Centre, Ahmedabad as part of ISRO’S Disaster

Management Support Programme.

• It is an active sensor which has cloud penetrating and all-

weather imaging capability being utilized for mapping and

monitoring of large areas affected by natural disasters especially

floods.

Ground Control Points library (GCPL)

Ground Control Point Library (GCPL) for collection of precise

ground control points (GCPs) for entire Indian region for

processing and generation of Cartosat-1 ortho rectified data.

• A total of 4000 GCPs (WGS 84 reference frame) were

collected for the country with better than 50 cm

planimetric accuracy.

• Apart from GCPs collection, using ‘zero’ order stations,

Indian plate velocity due to tectonic movement was

estimated.

Kosi river breach captured by DM-SAR

2D map of Part of Male

Nephelometer

GCP distribution

nrsc 16_flyer_asdma.pdf

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