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Evidence Guide: ICTRFN8181B - Analyse a satellite communications system

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

ICTRFN8181B - Analyse a satellite communications system

What evidence can you provide to prove your understanding of each of the following citeria?

Research satellite communication systems

  1. Research satellite applications with various orbit types for assessing their spatial positioning for specific purpose
  2. Analyse and report on the architecture, major subsystems and critical components in the communication systems of a recently launched commercial satellite
  3. Research and report on multiple access techniques and their typical applications
Research satellite applications with various orbit types for assessing their spatial positioning for specific purpose

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse and report on the architecture, major subsystems and critical components in the communication systems of a recently launched commercial satellite

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Research and report on multiple access techniques and their typical applications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse uplink and downlink variables

  1. Determine uplink and downlink criteria that impact on carrier to noise ratio
  2. Determine up/down link criteria that impact on baseband signal to noise ratio
  3. Determine the critical parameters of a satellite system
  4. Research common types of baseband signal processing, their spectral and noise improvement parameters for determining criteria for link budget evaluations
Determine uplink and downlink criteria that impact on carrier to noise ratio

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine up/down link criteria that impact on baseband signal to noise ratio

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the critical parameters of a satellite system

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Research common types of baseband signal processing, their spectral and noise improvement parameters for determining criteria for link budget evaluations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct a link budget analysis

  1. Produce a satellite link budget and calculate link margin for a satellite system with specified modulation types
  2. Analyse the relationship between the bit error ratio (BER) for a given energy per bit per noise power density (Eb/No) and forward error correction (FEC) parameter for determining the operational performance of the link
Produce a satellite link budget and calculate link margin for a satellite system with specified modulation types

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse the relationship between the bit error ratio (BER) for a given energy per bit per noise power density (Eb/No) and forward error correction (FEC) parameter for determining the operational performance of the link

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse properties of geostationary satellites

  1. Calculate the look angles for a geostationary satellite from any receiving location
  2. Research and report on frequency re-use in conjunction with polarisation selection and the use of spot beams
  3. Analyse and specify the major features of very small aperture terminal (VSAT) systems, and calculate link reliability in high rainfall regions
Calculate the look angles for a geostationary satellite from any receiving location

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Research and report on frequency re-use in conjunction with polarisation selection and the use of spot beams

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse and specify the major features of very small aperture terminal (VSAT) systems, and calculate link reliability in high rainfall regions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to:

analyse satellite communications system architecture

produce a satellite link budget and calculate link margin for a range of digital modulation types

calculate the look angles for a geostationary satellite from any receiving location

analyse and specify the major features of (VSAT) systems.

Context of and specific resources for assessment

Assessment must ensure:

site on which satellite analysis may be conducted

data, calculators and appropriate software tools.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

direct observation of the candidate performing analysis

review of link budget documentation completed by the candidate

review of look angle calculation reports

oral or written questioning to assess knowledge of satellite communications systems.

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, for example:

ICTRFN7182B Produce a radio link budget.

Aboriginal people and other people from a non English speaking background may have second language issues.

Access must be provided to appropriate learning and assessment support when required.

Assessment processes and techniques must be culturally appropriate, and appropriate to the oral communication skill level, and language and literacy capacity of the candidate and the work being performed.

In all cases where practical assessment is used it will be combined with targeted questioning to assess required knowledge. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

Where applicable, physical resources should include equipment modified for people with special needs.

Required Skills and Knowledge

Required skills

analytical skills to solve complex problems by making informed judgements and assumptions

literacy skills to prepare reports following an analysis or evaluation

planning and organisational skills to develop systems and procedures in solving complex mathematical formulas

problem solving and contingency management skills to manage unforeseen issues

research skills to gather and record data from measurements

technical skills to visualise radio frequency (RF) systems on board operational satellite platforms.

Required knowledge

antenna calculations:

gain

beamwidth

polarisation

effective isotropic radiated power (EIRP)

BER

carrier/noise ratio

constellation and eye diagrams

decibels, dB, dBm, dBW

distance to satellite and typical delays

frequency spectrum (satellite bands)

G/T ratio

geostationary orbit

link budget calculation

look angle calculations

low earth orbiting (LEO) satellites

modulation types:

n-FSK:

2FSK

4FSK

n-PSK:

2PSK

4PSK

8PSK

16PSK

n-QAM:

16 QAM

256QAM

spread spectrum:

direct sequence

frequency hopping.

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Satellite applications may include:

broadcasting:

broadcast satellite service (BSS)

fixed service satellite (FSS)

defence

domestic communications

earth observation:

mapping

meteorology

international communications:

Intelsat

global positioning system (GPS)

navigational.

Orbit may include:

geostationary

inclined orbit

low earth orbiting (LEO):

polar

non-polar

Molniya highly elliptical orbit.

Multiple access techniques may include:

code division multiple access (CDMA)

frequency division multiple access (FDMA)

hybrid multiple access schemes:

FDMA/time division multiple access TDMA

polarisation division multiple access (PDMA)

space division multiple access (SDMA)

time division multiple access (TDMA).

Uplink and downlink criteria may include:

antenna gain

bandwidth

error correction bits

modulation type

path loss

transmitter power.

Specified modulation types may include:

m-PSK:

8PSK

OQPSK

QPSK

M-QAM:

16QAM

spread spectrum:

direct sequence

frequency hopping.

Look angles include:

azimuth

elevation.

Frequency re-use may include:

orthogonal polarisation

spatial discrimination directional beams.

Very small aperture terminal may include:

availability

latency

multicast

topology.