Reeds Introductions: Essential Sensing and Telecommunications for Marine Engineering Applications (Reed's Professional) by Christopher Lavers

Author:Christopher Lavers [Lavers, Christopher]
Language: eng
Format: azw3
Publisher: Bloomsbury Publishing
Published: 2017-03-09T05:00:00+00:00

And rearranging:

(eq 5.5)

Given T = PRI and we rewrite this, yielding:

(eq 5.6)

Example: 5.6: If the PRF = 1000 s–1, what is the MUR (2 significant figures)?

Using the equation: and substituting:

5.6 Data rate

A major parameter affecting reflected echo size for rotating conventional radar is the power striking a target. The incident power is given by the number of pulses striking the contact multiplied by the power in every pulse.

The number of pulses striking a contact is given by the time the contact is illuminated by radar multiplied by the PRF:

and,

since time on target (eq 5.7)

N is the number of pulses striking a target and tot is the target illumination time, giving:

(eq 5.8)

Example 5.7: If the beam width is 1 degree, PRF = 2000 s–1 and ARR = 60 RPM, what is N, the number of pulses striking a target (1 decimal place)?

Using the equation:

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