Accession Number:

AD0776141

Title:

The Effects of ATCRBS P sub 2 Pulses on DABS Reliability.

Descriptive Note:

Project rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

• Harman,W. H.
• Shnidman,D. A.

Report Date:

1974-01-28

Pagination or Media Count:

68.0

Abstract:

An analytical study was performed to determine the effects of ATCRBS P sub 2 pulses as interference to DABS uplink transmissions. These effects constitute a major component of all uplink error-producing mechanisms that are anticipated to occur in DABS operation. The study is formulated in a way that includes effects of both receiver noise P sub 2 pulse interference, where the interference can be received from any of a number of different transmitters at different distances from the receiving aircraft. The model includes the randomness associated with whether or not a particular DABS signal is overlapped by any interference pulse, and also the conditional randomness of error production given that an overlap does occur. In fact, a major portion of the study is the determination of the conditional error probability given the occurrence of an overlap with stated signal-to-interference ratio and stated signal-to-noise ratio. Modified author abstract

Descriptors:

• *Air traffic control systems
• *Radar beacons
• Data links
• Transmitting
• Reliability
• Electromagnetic interference
• Pulse amplitude modulation
• Phase modulation

Subject Categories:

• Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE