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Trade Study Analysis Selection Criteria

The following were identified as critical factors for the ELU sub-system. Cost was considered separately so as to enable cost/effectiveness as a separate evaluation factor.

Weighting:

Scale: 1 – 5

Maximum Weight: 5 (Most critical factor)

Minimum Weight: 1 (Least critical factor)

Trade Study Analysis Selection Criteria

1. The ELU sub-system shall be portable and have active reception at all times once communication is established with the satellite network.

1.1. Portability

1.2. System Weight

Weighting = 4

2. The ELU sub-system shall be able to process GPS Satellite signal to identify crew/aircraft location to an accuracy of within 100m

2.1. CEP in m

Weighting = 5

3. The ELU sub-system be reliable to operate in the following environmental conditions:

3.1. Temperature -32 to 60 degrees C

3.2. Rain 0.5 in/hour

Weighting = 3

Trade Study Analysis Selection Criteria

4. The ELU sub-system shall have the ability to be self powered 24 hours a day for a continuous period of up to 10 days5. Accept daily crypto key data from SAR Command Center

4.1. Battery Life

Weighting = 5

5. The ELU sub-system shall have the ability to encrypt/decrypt communication signals from the SAR Command Center

5.1. Encryption/Decryption

Weighting = 4

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