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)
