Fundamentals Of Remote sensing Sensors

Fundamentals Of Remote Sensing Sensors

Terminology

Range
Every sensor is designed to work over a specified range. The design ranges are usually fixed, and if exceeded, result in permanent damage to or destruction of a sensor. It is customary to use transducing elements over only the part of their range where they provide predictable performance and often enhanced linearity.

The Geographical View of the Middle East

The Geographical View of the Middle East

Map of the Middle East

The Middle East is a large and diverse geographical area located in southwest Asia and northeast Africa. It extends over 2,000 miles from the Black Sea in the north to the Arabian Sea in the south, and about 1,000 miles from the Mediterranean Sea in the west to the mountains of Iran. The term “Middle East” came into common use in the early twentieth century, but remains loosely defined.

Vector And Raster

VECTOR AND RASTER  

Advantages and Disadvantages

There are several advantages and disadvantages for using either the vector or raster data model to store spatial data. These are summarized below.

Components of a GIS

Components of a GIS

A working GIS integrates these five key components: hardware, software, data, people, and methods.

H a r d w a r e
Hardware is the computer on which a GIS operates. Today, GIS runs on a wide range of hardware types, from centralized computer servers to desktop computers used in stand-alone or networked configurations.

Satellites and sensors

Satellites and Sensors

A satellite is an object that moves around
a larger object. Earth is a satellite because
it moves around the sun. The moon is a
satellite because it moves around Earth.

But here we are referring to “human-made”

satellites. These objects are launched into space and orbit Earth, or another body in space, and carry instruments for collecting information and communicating it back to the earth

Marine  Pollution

A staggering amount of waste - much of which has only existed for the past 60 years or so - enters the oceans each year.

Over 80% of marine pollution comes from land-based activities.

From plastic bags to pesticides - most of the waste we produce on land eventually reaches the oceans, either through deliberate dumping or from run-off through drains and rivers. This includes: