Which factor is NOT typically considered when determining go/no-go SEW link thresholds?

• A. Aesthetic design of the satellite's exterior.
• B. BER/SNR requirements, reliability targets, interference level, thermal noise and system margin.
• C. Mission criticality and desired confidence.
• D. Budgetary cost constraints are the primary driver of go/no-go thresholds.

Answer: (D)

In SEW link assessments, the go/no-go decision is driven by whether the link can actually meet the required performance under expected channel conditions. The main factors are the BER/SNR requirements that define how clean and reliable the received data must be, reliability targets that specify how often the link must succeed, the level of interference and the thermal noise floor that can degrade the signal, and the system margin that provides headroom for uncertainties. Mission criticality and the desired confidence determine how large that margin should be to meet mission goals.

The aesthetic design of the satellite’s exterior doesn't influence RF propagation or receiver performance, so it doesn't factor into these thresholds. Budgetary cost constraints, while important for overall program viability and design choices, do not set the technical go/no-go thresholds for the link; they may affect tradeoffs and risk posture, but the core criteria are the technical performance targets and margins.