Scientific- Research Quarterly of Geographical Data (SEPEHR)

The Moon, the Only Satellite of the Earth

Alireza Owsati

Volume 9, Issue 35 , November 2000, , Pages 26-33

Abstract

The Moon is undoubtedly the nearest celestial body to Earth, and in other words it is the only neighbor that is ready to accept the uninvited guests from our Planet. It is also considered as the Earth’s only satellite. The Moon has since ancient times attracted the attention of the Earth’s ... Read More

Human and the Environment

Alireza Owsati

Volume 9, Issue 33 , May 2000, , Pages 29-34

Abstract

All the stars and celestial bodies are suspended in space due to gravity. The Sun and other bodies in solar system have emerged gradually. Earth is one of the astonishing realities in universe, because it is exactly at the distance (150,000,000 kilometers) from the Sun that, along with the atmosphere ... Read More

Remote Sensing Scanning Systems

Alireza Owsati

Volume 4, Issue 15 , November 1995, , Pages 14-19

Abstract

Photometric remote sensing systems are capable of detecting visible and electromagnetic near-infrared regions (0.4<l<0.9). Other regions of the electromagnetic spectrum with longer wavelengths can potentially be useful for remote sensing purposes. Unfortunately, conventional glass lenses and sensitive ... Read More

Remote Sensing and Preparation of Topographic Maps

Alireza Owsati

Volume 3, Issue 12 , February 1994, , Pages 57-64

Abstract

Today, undoubtedly, the basis of the preparation of topographic maps can not be understood as independent from the use of satellite imagery, since these images provide humanity with valuable information for the preparation of maps and other information on land features used during the process of making ... Read More Today, undoubtedly, the basis of the preparation of topographic maps can not be understood as independent from the use of satellite imagery, since these images provide humanity with valuable information for the preparation of maps and other information on land features used during the process of making maps. In order to prepare maps on very large scales (1: 1000 and larger) as well as on relatively small zones, it is also possible that methods that are based on measurement and interpretation of satellite images be employed rather than classic methods of surveying. In any case, even when such images are taken as bases of the creation of topographic maps, As long as the land surveying methods are not carried out to create control points, collect names and information and determine boundaries (which are integral parts of the preparation of topographic maps), classify land features that can not be determined on the images, and complete some map features that are covered by plants, buildings or shadows, these maps can not be of particular and reliable significance. In the mapping projects, the quality that makes the map sufficiently valid is the comprehensive and useful information that is transmitted through the map to the user. In fact, 95% of the total efforts made in the process of making maps is directed toward this goal, so it is not irrelevant to mention a brief overview of the special features of topographic and thematic maps reflected in Table 1. Topographic maps and equivalent modern maps include collections of digital tantamount data that not only can be considered as valuable products in their own regard, but also as the basis for other types of thematic maps created using images from telework. In the United Kingdom alone, we find large governmental surveying agencies, including the ordnance Survey or the Directorates of overseas or Military Surveyors, which use a large number of employees to prepare topographic maps. In addition to the aforementioned companies, there are many private agencies active in the same field that seek to meet the needs and advancement of the goals of engineers, designers, architects, oil and mining companies, etc. All these companies widely use satellite imagery to advance their intentions.

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Author = Owsati, Alireza

The Moon, the Only Satellite of the Earth

Abstract

Human and the Environment

Abstract

Remote Sensing Scanning Systems

Abstract

Remote Sensing and Preparation of Topographic Maps

Abstract