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University of Nairobi
Fundamentals of Remote Sensing
1. Concept of Remote
Sensing
2. Characteristics of E-M
Radiation
3. Classification of E-M
Radiation
4. Types of Remote Sensing
Dept. of Civil Engineering
B. Sc.(Civil Engineering)
FCE 552: Engineering Survey IV
University of Nairobi
Dept. of Civil Engineering
B. Sc.(Civil Engineering)
FCE 552: Engineering Survey IV
1. Concept of Remote Sensing
University of Nairobi
Concept of Remote Sensing (1)
Remote sensing is the art, science and
technology of acquiring information about the
Earth's surface without actually being in
contact with it. This is done by sensing and
recording reflected or emitted energy and
processing, analyzing, and applying that
information.
Definition
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
University of Nairobi
Concept of Remote Sensing (2)
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
University of Nairobi
Flow of Remote Sensing
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
University of Nairobi
Remote Sensing Process (1)
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
University of Nairobi
Remote Sensing Process (2)
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
The process of remote sensing involves the interaction between
the incident radiation and the targets in question. It can besummarized as shown in the figure as:-
Energy source or illumination (A)- This is a fundamental requirement in RS and the purpose is to provide electromagnetic energy to the target of interest.Radiation and the Atmosphere (B)- As the energy travels through the atmosphere from the source and the target some interactions will take place. Interaction with the Target (C) – Interactions will take place between the target and the radiation and this will depend on the properties of both the target and the radiation.Recording of Energy by the sensor (D) – Reflected and emitted energy from the target is recorded by a sensor.
University of Nairobi
Remote Sensing Process (3)
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Transmission, Reception and Processing (E)-the energy recorded by the sensor has to be transmitted, often in electronic form, to a receiving and processing station where the data are processed into an image (hardcopy and/or digital).
Interpretation and Analysis (F) - the processed image is interpreted, visually and/or digitally or electronically, to extract information about the target which was illuminated.
Application (G) - the final element of the remote sensing process is achieved when we apply the information we have been able to extract from the imagery about the target in order to better understand it, reveal some new information, or assist in solving a particular problem
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
2. Characteristics of Electromagnetic
Radiation
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Electromagnetic Radiation
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Information from Electromagnetic Radiation
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
3. Classification of Electromagnetic
Radiation
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Name and Wavelength of E-M Radiation (1)
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Name and Wavelength of E-M Radiation (2)
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Principal Atmospheric Windows used in Remote Sensing
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Bands used in Remote Sensing
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
What do we measure in Remote Sensing?
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
4. Types of Remote Sensing
University of Nairobi
FCE 552: Engineering Survey IV Dept. of Civil Engineering
B. Sc.(Civil Engineering)
Types of Remote Sensing
