Our AdvancedSSA, Software as a Service (SaaS) solution is available via AdvancedSSA.com or deployed within your facility as a Commercial off-the-Shelf (COTS) implementation. We specialize in Collision Risk Management, Maneuver Optimization, Orbit Determination, and Covariance Realism.

Our strong background in applied mathematics enables us to rapidly model, prototype, and deploy a variety of different capabilities to various mission stakeholders. Our customers continuously bring us new and challenging problems because of our proven ability to deliver solutions on time and under budget.

3,303,622

# CDMs Processed

105

# Satellites Supported

1,916

# High Risk Events

44,188

# Cataloged Objects

CR Management Orbit Determination Product Generation Maneuver Planning Maneuver Reconstruction Covariance Realism

Collision Risk Management / CRM

Operational collision risk management is now an essential component of space mission operations. Most spacecraft operators have some semblance of a process to evaluate and mitigate high-risk conjunction events. As the size of the space object catalog increases, satellite operators will be faced with more conjunction events to evaluate. Thus more sophisticated collision threat characterization and collision avoidance strategies must be implemented.

SpaceNav’s Collision Risk Management software enables spacecraft operators to analyze and qualify high interest conjunction events. The software tools produce various figures and graphs which aid in analyzing the event data. Optimal avoidance maneuver solutions are generated for a user defined set of goals and constraints.

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Key Features of the SpaceNav Collision Risk Management solution:

Collision probability analysis tools
Event trending and forecasting
Database storage and archiving
Rules-based approach to threat characterization
Automated summary report that provides ‘action statements’ to be carried-out by mission stakeholders
Flexible, modular design that easily allows for integration with other tools and ground systems
Optimal collision avoidance algorithms

The SpaceNav collision risk management software is comprised of 2 major functional components:

Collision Threat Characterization
Collision Avoidance

Orbit Determination

With manual or fully automated versions, our OD performs the classic estimation functions within your satellite operations center, but also offers the user advanced capability to conduct large catalogue modelling and simulation and catalogue maintenance, performs space vehicle re-entry assessments, and supports tasking requirements by performing per-pass sensor bias analysis. Additionally, SpaceNav OD is an excellent choice for traditional and non-traditional sensor data validation. As with all our products, OD is available as SaaS or COTS purchase.

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Estimation Basics

Our OD software can process many measurement types, including GPS, radar and optical measurements. Estimation methods include both batch lease squares and sequential filtering. Probabilistic observation association and initial orbit determination algorithms are available as part of the SpaceNav software. SpaceNav currently performs orbit determination leveraging many different commercial and government sensors.

Bias and Accuracy

SpaceNav’s orbit determination software performs (per pass) sensor bias analysis and accuracy analysis to determine mission tasking requirements. We continuously monitor of a set of calibration satellites to determine changes in the various sensors. Automated changes to current sensor tasking levels are identified for high-risk or other SSA-driven events. We generate changes in orbit accuracy based on changes to tasking and scheduling.

Special Operations

SpaceNav’s approach to re-entry assessment is to perform a Monte Carlo-based simulation to determine where and when re-entry would occur given different atmospheric conditions and drag profiles. Using a precision vector (from the USAF or equivalent source), we perform long-term state and covariance propagation, varying the atmospheric density and affective drag area for high area to mass (and tumbling) objects. Our software then provides a statistical summary of the simulation.

Product Generation

The AdvancedSSA product generation service creates numerous mission planning reports and analytics. Product generation data can be retrieved via an API or viewed through the AdvancedSSA portal. Standard planning products include station acquisition times and antenna pointing angles. Derived orbital information such as ground track latitude/longitude, ascending/descending node crossing times, and spacecraft eclipse times. The product generation service can be configured to automatically generate a mission unique set of products, or the user can generate a product set on demand.

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Maneuver Planning

The AdvancedSSA maneuver planning service generates orbit maintenance stationkeeping maneuvers. Mission unique maneuver planning includes WRS-2 mean local time of ascending node (MLTAN) targeting, eccentricity/mean height targeting for spacecraft in low earth orbit, or mean longitude stationkeeping for geosynchronous orbit.

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Maneuver Reconstruction

The AdvancedSSA maneuver reconstruction service is used to determine what size of delta-V was imparted to the orbit. Several methods can be employed including differential correction or mean orbital element differencing. Thrust scale factors, engine calibration, and long-term fuel budget analysis is part of the Maneuver Reconstruction Service.

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Covariance Realism

The AdvancedSSA Covariance Realism Service is a set of tools used to quantify prediction error as a function of propagation time. Maneuver and pointing errors are modeled when generating predictive covariance. Predictive covariance can be generated via state noise compensation or sigma point methods.

• Creation of Error Growth Statistics

• State error population distribution characterization

• Gaussian Goodness of Fit Test Metrics

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