Which controls would you adjust if known targets were not being detected on your RADAR?

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Multiple Choice

Which controls would you adjust if known targets were not being detected on your RADAR?

When known targets aren’t being detected, you need to look at what can affect the visibility of echoes on the radar display. The gain setting controls the receiver’s sensitivity. If the gain is too low, weak returns may not reach the display; increasing gain can bring those echoes up. But too much gain raises noise and clutter, which can smear or hide real targets, so adjust it to a level that makes the target just discernible without overwhelming background. The range scale determines how far out the display covers. If the scale is not appropriate for where the targets should be, echoes may fall outside the visible area or be harder to see due to how the display allocates brightness and clutter across the range. Setting the scale to place the known targets within a comfortable display window can improve detection and allow you to judge their range and bearing more accurately. Suppressions are used to reduce clutter and interference, but if they’re too aggressive they can suppress legitimate target echoes, especially weaker ones. Tuning suppressions—reducing them or turning them off temporarily—can reveal targets that were being masked by sea clutter, rain, or other interference. Because any of these controls can prevent targets from being seen, reviewing and adjusting gain, range scale, and suppressions together is the right approach when known targets are not being detected.

When known targets aren’t being detected, you need to look at what can affect the visibility of echoes on the radar display. The gain setting controls the receiver’s sensitivity. If the gain is too low, weak returns may not reach the display; increasing gain can bring those echoes up. But too much gain raises noise and clutter, which can smear or hide real targets, so adjust it to a level that makes the target just discernible without overwhelming background.

The range scale determines how far out the display covers. If the scale is not appropriate for where the targets should be, echoes may fall outside the visible area or be harder to see due to how the display allocates brightness and clutter across the range. Setting the scale to place the known targets within a comfortable display window can improve detection and allow you to judge their range and bearing more accurately.

Suppressions are used to reduce clutter and interference, but if they’re too aggressive they can suppress legitimate target echoes, especially weaker ones. Tuning suppressions—reducing them or turning them off temporarily—can reveal targets that were being masked by sea clutter, rain, or other interference.

Because any of these controls can prevent targets from being seen, reviewing and adjusting gain, range scale, and suppressions together is the right approach when known targets are not being detected.

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