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Volume 1 (1990-1992)
Author = Mahdi Modiri
A Discussion on the Principles of Remote Sensing - Application of Remote Sensing in Municipal Engineering (1) - Part I
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections of electromagnetic waves of atmosphere and ground level, ... Read MoreAutomation in Cartography
Abstract
Computer can be programmed in order to draw maps at different graphic levels with the help of various output systems including printers, plotters and display systems. These automatic graphic machines share one attitude: they carry out whole or part of drawing with reliable speed and accuracy several ... Read MoreNote
Abstract
In reproduction and printing of an image, it is not possible to create an image similar to the original one, and there is no need for it. In order to provide an acceptable image, what is necessary is a tonal display. In this operation, the eyes and brain assist to compensate for the difference in light ... Read MoreA Note on the Principles of Remote Sensing - Part IV
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections of electromagnetic waves of atmosphere and ground level, ... Read MoreNote
Abstract
One of the important points in displaying the ground features on map is tone and tonal relationship. What sets up the provider-user connection in maps and conveys the message is a set of signs, symbols and colors. The signs and symbols of each map can be divided into real and virtual symbols, each ... Read MoreA Note on the Principles of Remote Sensing - Part III
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections of electromagnetic waves of atmosphere and ground level, ... Read MoreNote
Abstract
GIS, like other information systems, consists of sub systems. • Data entry sub-system; • storage and data-recovery Subsystem; • processing and data analysis Subsystem; • Information outlet Subsystem. A system can be called a GIS whose software system includes all four of the above ... Read MoreA Note on the Principles of Remote Sensing - Part II
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections of electromagnetic waves of atmosphere and ground level, ... Read MoreNote
Abstract
In the map and image printing process, several factors contribute to the reduction of accuracy and esthetic appeal. In fine print works, half-tone points have a diameter of about 0.2 millimeters; these points, like many small objects, undergo deformation and gain complexity on the big-world, human and ... Read MoreA Note on the Principles of Remote Sensing: Application of Remote Sensing in Municipal Engineering - Part V
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections of electromagnetic waves of atmosphere and ground level, ... Read MoreNote
Abstract
The Cartographic Information System (GIS) produces a map, and the output can be graphic, printed or maps on the computer screen. Maps are generally different in appearance and dimensions. It is sometimes difficult to say that a product or output is an image or a map on a computer screen, which has a ... Read MoreNote
Abstract
The computer-based system's structure is mainly hierarchical and GIS is a hierarchical structure that is made up of several sub-systems at different levels, and each sub-system has a certain function. The required set of functions is different according to the type of GIS. Examples of a sub-system include ... Read MoreNote
Abstract
The cost of collecting basic information accounts for about seventy five percent of the total cost of geographic information systems. Satellite images, while significantly reducing the cost of providing geographic information, improve the orderly revision and update of information, and provide satellite ... Read MoreNote
Abstract
Attitude toward map as a medium of communication and cartography language has evolved over the past four decades. Cartographers, while devoting their efforts to different surveying techniques and seeking to adapt to the advancements in technology, must examine the performance and design of the maps. ... Read MoreA Note on the Principles of Remote Sensing - Part I
Abstract
Remote sensing is a science that provides valuable information on objects and land features by measuring distances from afar and without physical contact. Measuring distances from afar and without physical contact. In remote sensing, information can be obtained by measuring and recording the reflections ... Read MoreNote
Abstract
Any information system can be simply a manual system or a complex computer one. In a general view, information systems that are used in different ways seem to be diverse. But in fact all have a common goal, which is to provide a conventional method for collecting, storing, processing and providing ... Read MoreNote
Abstract
The base and main essence of GIS in today's world is to provide reliable tools of decision-making based on geographic information. Given the wide-ranging applications of GIS, the new features considered for it, the accessibility, true dynamism, efficiency and practical advantages of GIS, it is expected ... Read MoreNote
Abstract
So far, there have been a lot of definitions of GIS, all of which trying to say what GIS is. However, today's modern systems of GIS share two forms of vector and network data. Users' demand for vector/network data of image layers including digital orthophoto has increased dramatically. There have been ... Read MoreNote
Abstract
The daily scientific development and advancements increase the scope and application of surveying in different sciences day by day. The modern technology has always provided new applications for this science, so that even the medical sciences utilize a branch of it. Today there is rarely any case within ... Read MoreNote
Abstract
Remote sensing is a science that provides valuable information about land objects and phenomena through distant measurement and without physical contact. As mentioned in the last issue, information can be obtained by measuring and recording changes in electromagnetic fields, gravity and sound waves. ... Read MoreNote
Abstract
Since thousands of years ago, human’s activities on the earth have been accompanied by thoughts concerning where to be and where to go, how to move and in which direction. Living in nature and thinking about land and its various forms drove people to thought; human beings had to understand their ... Read MoreNote
Abstract
At the same time as practical and technological developments and mutual impact in raising the quality and scientific potential of surveying services, manufacturers of technical devices and equipment also struggle day by day to present new achievements. Over the past three years, with the exit of analogue ... Read MoreNote
Abstract
One of the major steps in surveying is the activity called the "classification operation". An operation that, while clarifying aerial photographs, collects the information of names. Classification operations have specific technical rules and regulations that the Geographic Organization has described ... Read MoreNote
Abstract
The display of the face of the Earth (map history) has evolved from fantasy and imaginative maps to reality and geometric and graphical precision. The linkage and correlation between mathematical sciences, physics and mathematical geography with surveying and cartography have always had a profound effect ... Read MoreRemote Control and Processing of Geographical Information