September 7, 2020

The amplitude

An amplitude is the “azimuth” of a heavenly body when it is on the observer’s rational horizon. The angle at the zenith between the prime vertical circle (the vertical circle passing through the east and west points) and the vertical circle passing through the body is called the amplitude of […]
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September 7, 2020

Radar

Introduction Radar is an acronym derived from RAdio Detection And Ranging. It is an electronic detection system making use of super high frequency radio signals which are reflected off objects in their path. By utilising specially designed antennas and control equipment, it is possible to obtain reasonably accurate bearings of […]
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September 9, 2020

Use of marine radar

Most marine radars operate in the 10 GHz (3 cm wavelength) and 3 GHz (10 cm wavelength) frequency bands. Although a bit outdated, these bands are still referred to as X band (10GHz) and S band (3 GHz). Radars operating in the 10 GHz band (3 cm wavelength) provide much […]
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September 9, 2020

Typical radar system

Although radars have become more sophisticated with the advances in technology, it is intended to give a very basic description of the components and workings of a typical radar system. The block diagram that follows is a very simplified version of a radar and must be seen as such. The […]
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September 10, 2020

Characteristics of a radar system

What is the nature of the transmission and how does it affect the performance of the radar? There are a number of parameters which we can look at: Power Output. Obviously, the power output of the different radars will differ from one another, but to give one an idea of […]
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