Modified Hopping Synthesizer Controller,
Abstract
Defence Research Establishment Ottawa is pursuing an in-house research activity in spread spectrum technology to support development of robust, antijam satellite communications for the military. The in house effort consists of developing a system simulator to research the techniques involved in spread spectrum synchronization. For these experiments, a Hopping Synthesizer Controller is required to drive a frequency synthesizer, and is the subject of this report. The controller was built on a single board using a digital signal processor for calculations and an erasable programmable logic device for interfacing. It provides the pseudorandom hopping sequence, modulation, channel selection and Doppler precorrection. The Hopping Synthesizer Controller can drive the frequency synthesizer at hop rates up to 25 khops/s. Four configurations are supported: operation within either the payload or ground terminal simulator, for uplink or downlink. Each configuration supports commands from a Synchronization Controller and special uplink and downlink synchronization modes. In this document the software and hardware details are provided along with a user guide for the board.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1996
- Accession Number
- ADA320252
Entities
People
- Robin Addison
Organizations
- Defence Research and Development Canada