Space data and information transfer systems. Proximity-1 space link protocol. Physical layer

BS ISO 21460:2007 Space data and information transfer systems. Proximity-1 space link protocol. Physical layer

BS ISO 21460 defines the Proximity-1 space link protocol physical layer. It specifies the channel connection process, provision for frequency bands and assignments, hailing channel, polarization, modulation, data rates, and performance requirements.

Currently, the physical layer only defines operations at UHF frequencies for the Mars environment. The coding layer is defined in ISO 21459. The data link layer is defined in BS ISO 22663.

BS ISO 21460 does not specify:

a) Individual implementations or products

b) Implementation of service interfaces within real systems

c) The methods or technologies required to perform the procedures

d) The management activities required to configure and control the protocol

Contents of BS ISO 21460:

Introduction

Purpose

Scope

Applicability

Rationale

Conventions and definitions

References

Overview

General requirements for the physical layer

Applicability

Functional requirements

Idle data

Controlled communications channel properties

Performance requirements

Directives affecting the proximity-1

Physical layer (normative)

Bit numbering convention

Proximity-1 layered protocol model

Oscillator phase noise

Discrete lines template for the transmitter (normalized power in dbc vs.

Normalized frequency: (f-fc)/a)

Categories of radio equipment contained on proximity-1 link elements

Proximity-1 channel assignments 0 through 7 (frequencies in mhz)