List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Elements | Performance Criteria |
Elements describe the essential outcomes | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1. Research satellite communication systems | 1.1 Research satellite applications with various orbit types for assessing their spatial positioning for specific purposes 1.2 Analyse and report on architecture, major subsystems and critical components in communication systems of recently launched commercial satellite 1.3 Research and report on multiple access techniques and their typical applications |
2. Analyse uplink and downlink variables | 2.1 Determine uplink and downlink criteria that impact on carrier to noise ratio 2.2 Determine up/down link criteria that impact on baseband signal to noise ratio 2.3 Determine critical parameters of a satellite system 2.4 Research common types of baseband signal processing, and their spectral and noise improvement parameters for determining criteria for link budget evaluations |
3. Conduct link budget analysis | 3.1 Produce satellite link budget and calculate link margin for satellite system with specified modulation types 3.2 Analyse relationship between bit error ratio (BER) for given energy per bit per noise power density (Eb/No) and forward error correction (FEC) parameter for determining operational performance of link |
4. Analyse properties of geostationary satellites | 4.1 Calculate look angles for geostationary satellite from any receiving location 4.2 Research and report on frequency re-use in conjunction with polarisation selection and use of spot beams 4.3 Analyse and specify major features of very small aperture terminal (VSAT) systems, and calculate link reliability in high rainfall regions |
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 very small aperture terminal (VSAT) systems.
Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.
To complete the unit requirements safely and effectively, the individual must:
identify and perform antenna calculations including:
gain
beamwidth
polarisation
effective isotropic radiated power (EIRP)
define bit error rate (BER) and how it affects satellite communications
outline carrier and noise ratio
explain constellation and eye diagrams
outline distance to satellite and typical delays
summarise frequency spectrum (satellite bands)
explain gain-to-noise-temperature G/T ratio
outline geostationary orbit
explain link budget calculation
explain look angle calculations
describe low earth orbiting (LEO) satellites
evaluate the following modulation types suitable for satellite communications:
n-FSK:
2FSK
4FSK
n-PSK:
2PSK
4PSK
8PSK
16PSK
n-QAM:
16 QAM
256QAM
define spread spectrum techniques including:
direct sequence
frequency hopping.
Gather evidence to demonstrate consistent performance in conditions that are safe and replicate the workplace. Noise levels, production flow, interruptions and time variances should be typical of those experienced in the telecommunications – radio frequency networks field of work and include access to:
a site on which satellite analysis may be conducted
data, calculators and appropriate software tools.
Assessors of this unit must satisfy the requirements for assessors in applicable vocational education and training legislation, frameworks and/or standards.