Comtech EF Data MetaCarrier MCDD-100, Installation And Operation Manual

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MCDD-100 MetaCarrier Detection Device Revision 3
Appendix A MN-MCDD100
A–7
As before, 50% probability is assumed, since the MCxD-100 must achieve code phase-
lock to obtain the Carrier ID from the MetaCarrier. Therefore, each time the MCxD-100
is instructed to reacquire, the probability remains that it will achieve code phase-lock to
the
interfering
carrier.
If the MetaCarrier is obtained and the
interfering
carrier is identified, the uplinking
station may be contacted and a request made to disable the transmission service.
If the MetaCarrier is
not
obtained, proceed to Step 2.
•
Step 2: Disable the MetaCarrier on the
desired
carrier to allow the MCxD-100 to look for
the MetaCarrier under the
interfering
carrier.
If the MetaCarrier is obtained, the uplinking station may be contacted and a request
made to disable the transmission service.
If the MetaCarrier is
not
obtained, proceed to Step 3.
•
Step 3: Many receiving devices may tolerate the center frequency being offset from the
transmission station if it is kept within the carrier tracking loop of the receiver. Move
the center frequency of the
desired
carrier up or down to allow the MCxD-100 to look
for the MetaCarrier under the
interfering
carrier.
If the MetaCarrier is obtained, the uplinking station may be contacted and a request
made to disable the transmission service.
If the MetaCarrier is
not
obtained, proceed to Step 4.
•
Step 4:
This is the most drastic step
– disable the
desired
carrier to allow the MCxD-100
to look for the MetaCarrier under the
interfering
carrier
If the MetaCarrier is obtained, the uplinking station may be contacted and a request
made to disable the transmission service.