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training course on weather radar systems - RTC, Regional Training ...

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MODULE A- INTRODUCTION TO RADAR<br />

λ= the electromagnetic wave length<br />

Idealized Radar Equati<strong>on</strong> - no system losses<br />

Since the antenna gain is the same for transmit & receive, this becomes :<br />

Practical Radar Equati<strong>on</strong> - with system losses for point targets<br />

Where:<br />

• Lsys = the system losses expressed as a power ratio<br />

• P r is the average received power<br />

• P t is the transmitted power<br />

• G is the gain for the <strong>radar</strong><br />

• λ is the <strong>radar</strong>'s wavelength<br />

• σ is the targets scattering cross secti<strong>on</strong><br />

• R is the range from the <strong>radar</strong> to the target<br />

• L sys: is system losses.<br />

16<br />

TURKEY RADAR TRAINING 1.0 / ALANYA 2005

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