Early uncertainty
You need useful answers before every subsystem detail is finalized.
Services
Engineering analysis support for early space mission decisions
Ephemersys helps satellite teams evaluate mission feasibility, radiation risks, communications constraints, and design trade-offs through focused engineering studies and expert support.
The Challenges
Some mission decisions need expert analysis beyond what software alone can provide
Early mission phases often require fast but defensible answers. Teams need to compare architectures, estimate margins, assess risks, and prepare proposals before the design is mature.
These questions are rarely isolated. Orbit choices affect communication windows. Communication needs affect power budgets. Geometry and shielding affect radiation exposure. Lifetime constraints influence mission feasibility.
Ephemersys supports teams when they need focused analysis, independent review, or custom engineering workflows to move from uncertainty to decision.
Cross-domain trade-offs
Mission design, communications, power, radiation, shielding, and lifetime constraints interact.
Limited internal engineering resources
Your team may not have the time, tooling, or specialist expertise to analyze every option quickly.
Service areas
Focused engineering analysis for space mission decisions
Radiation and shielding assessment
Support radiation environment assessment, shielding analysis, component exposure evaluation, and radiation risk reduction for spacecraft subsystems and mission scenarios.
Useful when component reliability, shielding mass, or mission environment drives design risk.
- TID-oriented analysis
- TNID-oriented analysis
- SEE risk assessment support
- Shielding trade-off studies
- Component exposure evaluation
- Radiation environment assessment
- Subsystem-level radiation analysis
- Review-level analysis documentation
Mission feasibility and trade-off studies
Evaluate early mission concepts, compare architecture options, and identify key constraints before committing to a design path.
Useful when you need to decide whether a mission concept is technically realistic.
- Mission concept assessment
- Orbit and scenario comparison
- Feasibility studies for CubeSat and smallsat missions
- Identification of critical design drivers
- Early-phase trade-off analysis
RF and link budget analysis
Analyze communication constraints, link margins, ground station access, data volume, and downlink feasibility.
Useful when mission success depends on whether you can reliably get the data down.
- UHF, S-band, or X-band link budget analysis
- Ground station visibility and access assessment
- Data budget and downlink capacity estimation
- Communication margin comparison across scenarios
- Proposal-stage communication analysis
Orbit, lifetime, and debris-related analysis
Assess how orbit selection affects mission lifetime, operational feasibility, regulatory constraints, and debris mitigation planning.
Useful when orbit choice has long-term consequences for feasibility and compliance.
- Orbit option comparison
- Mission lifetime estimation
- Deorbit and debris mitigation support
- Sensitivity analysis for altitude and inclination choices
- Early compliance-oriented analysis
Proposal and early-phase engineering support
Help teams prepare technically credible material for proposals, feasibility reviews, grant applications, or early customer discussions.
Useful when you need credible engineering material under time pressure.
- Technical analysis for proposals
- Mission feasibility inputs
- Engineering figures and assumptions
- Review of technical baselines
- Custom calculations and supporting documentation
How we work
A focused process from question to decision
Define the engineering question
We clarify the mission context, assumptions, constraints, and the decision you need to make.
Select the analysis approach
We identify the right method, model, or custom workflow for the engineering question.
Run the analysis
We evaluate scenarios, assumptions, margins, sensitivities, and design options.
Deliver decision-ready outputs
You receive clear results, assumptions, plots, summaries, and recommendations that can support design reviews, proposals, or internal decisions.
Relevant experience
Radiation analysis experience for Lunar and Venus mission studies.
Our team has contributed to subsystem-level radiation analysis for Lunar and Venus mission studies, including Total Ionizing Dose, Total Non-Ionizing Dose, and Single Event Effects assessments supporting PDR- and CDR-level engineering reviews.
We bring the same review-oriented mindset to our service work: transparent assumptions, defensible calculations, and outputs that help teams make design decisions under uncertainty.
Contact
Have a mission analysis question?
Tell us what you are trying to evaluate. We can help you identify whether a focused engineering study, independent review, or custom analysis workflow is the right fit.
info@ephemersys.comOnline scheduling
Book a meeting with Ephemersys.
Choose an available time for a SatZone, Sector Tool, or mission analysis discussion.