Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 7 Human settlements: Urban surveys, human settlement analysis and archaeology. Chairman: W. G. Collins, Co-chairman: B. C. Forster, Liaison: P. Hofstee

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Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Small format aerial photography - A new planning and administrative tool for town planners in India. P. Misra

Document type:: Multivolume work

Structure type:: Chapter

Symposium on Remote Sensing for Resources Development and Environmental Management / Enschede / August 1986 853 :mal images into we can do with the land use classi 1 visible and near lature intervalls data. This can be :e different land mature are listed igenious classes or This separation :nhancement methods letric and/or spa- 'ication using .ers like the •ers in our study. ' be characterized .ion with a ground use classes will asses have very of generalization c and temporal) answer the questio; gress in Physical Genese der Wärme- ger Geographische orm of the urban In WMO, Urban Geneva. stemperaturbilder . In M.Seger (ed.) n Klagenfurt, Small format aerial photography - A new planning and administrative tool for town planners in India P.Misra Human Settlement Analysis Group, Indian Institute of Remote Sensing, Dehradun ABSTRACT: Small format (35mm and 70mm) aerial photography (SFAP) was flown in Delhi in July, 1985 for the firstitime in India. In carrying out'the development of the technology, the requirements of major physical inputs for the town planners were kept in view, although other disciplines like vegetation, soil, land use, and agriculture would also benefit from SFAP. The SFAP has been received very well by the profession of town planners. At present, it has been used for small areas eg. slums, clusters of small hutments and unauthorized encroachments on govt. land. Case study of Rohini city development project under Delhi Development Authority has been described. The technique is highly suitable for updating an existing city base map even when non-metric cameras are used. Experiment is continu ing with metric 70mm camera for producing quick base map for small towns and for providing information for environment impact-assessment which is so very essential for starting any physical project in India. A simple technology like SFAP which is cost and time effective will always be more acceptable in developing countries. 1. INTRODUCTION Conventional aerial photography is taken by sophisticated cameras (WILD, ZEISS etc.) costing more than 150-200 thousand rupees. The manufacturers have tried to make their lenses almost distortion free, resulting in accuracies of much better than 1/10,000 of flying height. Such a tech nology is also utilised in the field of photo-interpretation (aerial remote sensing) where high geometric (metric) qua lity is not required. For interpretation, the stress is on high resolution which will enable a town planner to pick up 'dwelling units' or 'encroachments' with good discrimi nation. Further, the process of getting the conventional large format aerial photography is not economical for small are as. If the information is required for a small area like 'slums' and unauthorized colonies, the conventional flight mission becomes very costly and time consuming. A way out is now available in the use of small format aerial photography. The use of 35mm and 70mm camera has found many app lications in 'Urban Planning and Monitoring'. Some of the uses are : a) monitoring changes over a period of time b) updating information expeditiously c) location of exact size, composition, distribution and physical characteristics of marginal settlement eg. slums, squatter area and other low-income settlements d) supplementing regular census surveys e) traffic and parking studies f) vegetation/tree inventory and other thematic informa tion gathering. It may be mentioned that aerial photography is governed by the security measures/procedures as laid down by the Ministry of Defence and under the Aircraft Act in India. However, bonafi de aerial photography continues to grow in India. Over the last 3-4 years, the possibility of utilization of small format aerial photography has been explored by the Human Settlement Analysis Croup of Indian Institute of Remote Sensing. It may be mentioned that HUSA Group has been established under a joint ITC-IIRS project which started in India in 1982. Case study of Rohini Project is the first case in which SFAP has been used in India for urban planners 2. CASE STUDY OF ROHINI PROJECT OF NEW DELHI The location of our study area falls within the overall project area of Rohini, a special colony development and housing project of Delhi Development Authority. The pro ject is designed to cater to the needs of about 2.5 million persons on the NW extent of existing capital New Delhi. It was reported by the Project Manager that unauthorized construction of structures/buildings is going on especially near the villages which have been acquired for the project. 2.1 Objectives of the study a) to get experience of actually carrying out aerial flying including navigation with small format (35mm and 70 mm) cameras; performances of the pilot-airc raft and the photo-elements of camera-film combinations b) since the flying was to be done over real problem areas, to get feed back from user on problems of enc roachment on public land, slums etc. c) to judge the capability of small format aerial photo graphy (SFAP) for updating the base map which was available on 1 :10,000 and 1:5000 scales d) to evaluate SFAP for providing information on themes like tree cover, soil characteristics, drainage, land use etc. in the urban environment. 2.2 Platform (aircraft) and camera mount It was originally planned to make use of 'SHADOW' (U.K.) Microlight* (a bare-minimum sports aircraft weighing less than 250 lbs). The procurement of this aircraft was, how ever, delayed and we had to resort to another aircraft called 'PUSHPAK' belonging to the Delhi Flying Club, a * Note : Microiight aircrafts are a new development in aviation sports. These are very low in cost (about $6000). Most of them can be dismantled and can be carried over top of a trailer/big car and can be assembled in less than one hour. Another important characteristic is that they do not require an area bigger than a football field for take off and landing. These can be operated without the consi deration of a big aerodrome in the vicinity of area to be surveyed. It is our intention to test this aircraft as an additional survey facility.

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