A Review and Analysis of the SIERRA DME Collision Avoidance System.
Abstract
The purpose of the study is to evaluate SIERRA's concept for a collision avoidance system, referred to as DME/CAS. The evaluation is one of a series of studies of various collision avoidance concepts. The DME/CAS is an air-derived synchronous concept intended to exploit the proliferated network of DME ground facilities to obtain synchronization and to adapt airborne DME designs for time-sharing between the DME and CAS functions. DME ground facilities would be augmented to transmit a CAS time reference signal, in addition to normal DME replies; airborne clocks would by synchronized to the received reference, after correction for the propagation delay obtained by DME techniques. Synchronized CAS participants transmit and receive one-way range and encoded altitude signals for threat evaluation in accordance with the ANTC-117 threat logic. The areas addressed in this study include the impact of time sharing between DME and CAS functions; the impact of various interference mechanisms (fruit, co-slot and adjacent slot occupancy, multipath), and threat parameter measurement accuracies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1975
- Accession Number
- ADA021634
Entities
People
- Arthur Krinitz
Organizations
- Institute for Defense Analyses