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

Damen, M. C. J.

Bibliographic data

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:: 856343064

Title:: Remote sensing for resources development and environmental management

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

Scope:: XV, 547 Seiten

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856343064

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,1)

Language:: English

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

Editor:: Damen, M. C. J.

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:: 1 Visible and infrared data. Chairman: F. Quiel, Liaison: N J. Mulder

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Space photomaps - Their compilation and peculiarities of geographical application. B. A. Novakovski

Document type:: Multivolume work

Structure type:: Chapter

60 lief and curvature. Orthophotoimages preser ve all details of initial images and present data on the Earth's surface in corrected co ordinates at the same time. Being the end product of a chain of photographic transfo rmations orthophotoimages have a somewhat reduced resolution. Photogranmetry has ma de it possible to expand research on the use of orthophotoimages to obtain photomaps in many fields of geographical application orthophotoimages acquire paramount importan ce, particularly so in space-based thematic mapping of mountainous areas. Photogrammetry palys a vital part in cre ation and practical use of space photomaps which are complex cartographic-photogram- metric models (HobskobCKMM, 1983). The exact nature of photogrammetrie processing is de termined by at least the three main groups of factors depending on conditions of spa ce photography. The orbital movement of spa ceship itself refers to the first group. The second group is accounted for by tech nical characteristics of the space photo equipment: its resolution, dreal scope, mul- tispectrality etc. The third group of fac tors includes the geometric conditions of space photography (the height and the tra jectory of the orbit, the direction of the camera's optical axis at the moment of ex position) and the properties of the photo graphed object itself such as surface cur vature, relief etc. That is important not only for the application of space images in carthography but for setting up an environ mental monitoring as well. The carto-photo- grammetric processing of space images of the Earth is primarily defined by the orbi tal parameters which influence the scale, ovelapping and geometric properties of ima ges decisively. It should be noted that the space survey routes when mapped show as complicated cur ved paths. Being a function of orbital pa rameters they can't be changed once the or bits is given. That's why the route planning for mapping given geographical regions and route repetitiveness are of special impor tance in remote sensing. Thus there is no chance of plotting a space survey route in a latitudinal (east-west) direction as it is usually done on aerophotographic surveys. The value of the forward overlap of photo graphs is the most important parameter for the space image - based cartography. It de termines the choice of appropriate techni ques of cartophotogrammetric interpretati on of data obtained, including the building up of cartometric data bases - digital mo dels of natural objects. The value of the forward overlap p/° can be easily derived from the following analytic dependence for the time interval t between the two succes sive expositions: t= 2R / W \ 100% arc sin H + R sine where W is the speed of movement of the subsatellite point, R - mean radius of the Earth, p - half-angle of the camera's visi on field. It should be noted that the for mula doesn't take into account the effect of the Earth's rotation (НоваковСКИЙ, 1981). Also of importance area the angle of sloping of orbital stereophotoimage3. They to a gre at extent determine the choice of effective techniques of carto-photogrammetric proces sing and data interpretation. The latter ac quires particular importance when orthopho toimages used for making space photomaps are obtained b^ means of the analoguephotogram metric techniques. Let us illustrate our analysis of the se cond and third groups of factors influen cing the effectiveness of the remote sen sing data use in geographic cartography on the example of a specific orbital photo-ex periment. We shall study the photographs taken by the multispectral MKF-6 earners du ring the "3oyuz-22" flight (commander V.F. Bykovsky, flight engineer V.V.Aksyonov, 15- 23 September,1976). As it was stated in se veral studies (Linsenbarth,1978, НоБЭКОВСКИЙ, 1981, Proos,1982, Guske, Kluge,1982) the carto-photogrammetric peculiarities of the images taken present wide possibilities for their effective use in cartography (especi ally in compilation of orthophotoimages and photomaps) for geographical purposes. Let us illustrate certain practical aspec ts of such compilation in the instance of analysis and processing of orbital stereo scopic pair of photographs taken by the "3o- yuz-22". These images cover the south-eas tern part of the Fergana valley and north ern ridges of the Pamiro-Alay mountain sys- tem-Turkestan and Alay (near-Fergana physi co -geographic regions), the Alay valley and the Trans-Alay ridge (the Pamir region). Ex perimental works have been carried out on the two different analogue photogrammetric complexes of used to compile stereomaps: or thophotoprojector OFPD and stereograph SC-1 (USSR) and Topocart - Orthophot-B (GDR). The techniques of producing space ortho photoimages and photomaps with this modern photogrammetrie equipment, the theoretical foundations of these techniques, merits and shortcomings of the equipment, itself, ana lysis of the accuracy of the results etc. are the subjects of special research (see, for example, Новаковский,1983, Балашов, Мантров, Решетов, Сигалов ,1984). within the framework of this paper we shall consi der the peculiarities of photogrammetric compilation of relief pictures including their presentation on a photomap. That would enable us to take up the problem of its di rect use fer compiling various morphometric maps for their further analysis. The drawing of relief by isolines (1:500 000 scale) on the Topocart device was conducted after the same scale orthophotoimage was obtained with orthophotoprojector Orthophot-B (Новаковский, 1983). Diapositives enlarged approximately 1.7 times from the 1:2 120 000 initial spa ce double-negatives were used. Drawing was made on plastic by the traditional stereo photo gramme trie technique. It's known that continuous isolines on 1:500 000 topographic maps of mountainous areas are drawn with 100 m intervals, or some special symbols (cliffs etc.) are used. It should be noted that if the isolines i3 0.1 mm gap between or les3 steep slopes they nay be merged at stretches no longer than 1 cm (according to the map's scale). Two or three intermediate isolines may be drawed between broadened isolines (worth 500 m) with the rest c.f them interrupted. The relief map compilation has demonstrated that the above described technique of dra wing isolines with a 100 m interval are in expedient for the Pamiro-Alay area, becau se the isolines practically fully cover the photoim formati king in space p their s this an mountai cepting With ex cepted for the main со: for a s present Figure ' ment of Fig.1 is 2 - gyp£ One can ween the and allc of the c the forn ly. It £ relief v< graphic cally co certain isolines val for ness and picture. The ma photomap the Topo follows: piling a cing a r in the p cape ele on of gl the orth the map. viding f accepted rectly f that the to the o procedur details content gypsomet

Access restriction

Copyright

fullscreen: Remote sensing for resources development and environmental management (Volume 1)

Multivolume work

Volume

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation