6.4 FALSE ECHOES
612
6
yyy
yyy
[VI] Radar Interference
When another radar equipment using the same frequency band as that on own ship is near own ship, a
radar interference pattern may appear on the radar display. This interference pattern consists of a number
of spots which appear in various forms. In many cases, these spots do not always appear at the same
places, so that they can be discriminated from the target echoes. (See Figure 6.8.)
HL
HL
Figure 6.8
If radar equipment causing an interference pattern and this radar are of the same model, their transmitting
repetition frequency is nearly the same. As a result, interference patterns may be displayed
concentrically.
In this case, the interference patterns cannot be eliminated by using only the interference reflector function,
so press
[TX/PRF]
several times to fine-tune the transmitting repetition frequency.
An interference suppressing effect can be heightened by applying a different transmitting repetition
frequency to the interference pattern source radar and this radar.
Summary of Contents for JMA-5212-4
Page 2: ......
Page 18: ... xii NKE 2103 6 6HS Scanner Unit NKE 2254 7 9 6HS Scanner Unit Warning Label Warning Label ...
Page 19: ... xiii ...
Page 38: ... xxxii ...
Page 45: ...1 4 EXTERIOR DRAWINGS 1 6 1 y Fig 1 1 Exterior Drawing of Scanner Unit Type NKE 2103 4 ...
Page 46: ...1 7 Fig 1 2 Exterior Drawing of Scanner Unit Type NKE 2103 6 ...
Page 47: ...1 4 EXTERIOR DRAWINGS 1 8 1 y Fig 1 3 Exterior Drawing of Scanner Unit Type NKE 2254 7 ...
Page 48: ...1 9 Fig 1 4 Exterior Drawing of Scanner Unit Type NKE 2254 9 ...
Page 49: ...1 4 EXTERIOR DRAWINGS 1 10 1 y Fig 1 5 Exterior Drawing of Monitor Unit Type NWZ 164 ...
Page 50: ...1 11 Fig 1 6 Exterior Drawing of Processor Unit Type NDC 1460 ...
Page 51: ...1 4 EXTERIOR DRAWINGS 1 12 1 y Fig 1 7 Exterior Drawing of Keyboard Unit Type NCE 7699A ...
Page 52: ...1 13 Fig 1 8 Exterior Drawing of NSK Unit Type NCT 4106A ...
Page 56: ...1 17 ...
Page 58: ...2 1 2 1 EXAMPLE OF DISPLAY ...
Page 78: ...2 21 ...
Page 234: ...3 155 ...
Page 316: ...5 75 ...
Page 332: ...6 15 ...
Page 358: ...7 25 Exit 1 Press RADAR MENU key The Main Menu will reappear ...
Page 434: ...8 39 ...
Page 452: ...10 5 ...
Page 477: ...Figure 8 NKE 2254 Interconnection Diagram of Scanner Unit ...
Page 493: ......