689491
82
Zoom out
Zoom in
Previous page
1/125
Next page
-3.4-
3.3 SART (Search and Rescue Transponder)
A Search and Rescue Transponder (SART) is generally carried on the SOLAS Convention ships
under the GMDSS scheme. It serves as a homing device for the rescue party to reach the survival
craft in distress. It is triggered by any X-Band (3 cm) radar within a range of approximately 5 nm
(IMO Resolution A.802 (19)). Each radar pulse received causes it to transmit a response which is
swept repetitively across the complete radar frequency band. When interrogated, it first sweeps
rapidly (0.4 µs) through the band before beginning a relatively slow sweep (7.5 µs) through the
band back to the starting frequency. This process is repeated for a total of twelve complete cycles.
At some point in each sweep, the SART frequency will match that of the interrogating radar and be
within the pass band of the radar receiver. When the SART is within about 1 nm, the radar display
may show 12 responses equally spaced by 0.64 nautical miles.
9500 MHz
9200 MHz
Radar antenna
beamwidth
Screen A: When SART
is distant
Screen B: When SART
is close
Lines of 12 dots
are displayed in
concentric arcs.
Echo of SART
Position of
SART
Own ship's
position
Own ship's
position
SART mark
length
Radar receiver
bandwidth
Sweep time
7.5 µs
95 µs
Sweep start
High speed sweep signal
Low speed sweep signal
24 NM
1.5 NM
Position of
SART
Echo of
SART
Summary to detect SART response
No particular facilities are required to detect the SART responses; however, the following
precautions are necessary.
1. Use range scale of 6 or 12 nm as the spacing between the SART responses is about 0.6
nm (1125 m) to distinguish the SART.
2. To avoid a chance of regarding SART signals as noise, do the following:
- Turn off the automatic clutter suppression.
- Turn off the Interference Rejector.
- Turn off the signal processor such as Echo Average.
The FR-1500 Mark-3 series radars have a macro feature for easy detection of SART.
Press [F1], 0], [ENTER/SELECT]. The following setting is factory provided.
IR (Interference Rejector): OFF ECHO AVG: OFF
A/C AUTO: OFF N REJ: OFF
Signal processor: OFF ES: OFF
Range: 12 nm
82


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Furuno FR1510 MARK-3 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Furuno FR1510 MARK-3 in the language / languages: English as an attachment in your email.

The manual is 1,58 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Furuno FR1510 MARK-3

Furuno FR1510 MARK-3 Installation Guide - English - 75 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info