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Guidance, Navigation, and Control Analyst

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Job ID: 2110298
Location: GREENBELT, MD, United States
Date Posted: Dec 23, 2021
Category: Engineering and Sciences
Subcategory: Systems Engineer
Schedule: Full-time
Shift: Day Job
Travel: No
Minimum Clearance Required: None
Clearance Level Must Be Able to Obtain: None
Potential for Remote Work:
Benefits: Click here

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Job Description


SAIC is seeking a Guidance, Navigation, and Control (GNC) Analyst on the OMES II contract in support of the OSAM-1 program in NASA’s Exploration and In-Space Services (NExIS) projects division at NASA Goddard Space Flight Center. This position is located in Greenbelt, MD.

The OSAM-1 mission is a Goddard Space Flight Center (GSFC) NExIS managed mission. OSAM-1 is a robotic servicing mission designed to refuel a Low Earth Orbit (LEO) satellite. It contains 3 elements: the Flight Element comprised of the OSAM-1 Servicing Vehicle (RSV) and development testbeds, the Ground Element comprised of the systems required to conduct RSV operations and the supporting networks and facilities, and the Launch Element comprised of the Launch Vehicle and supporting facilities and services. NExIS is responsible for the design, engineering, development, test and operations of the OSAM-1 Mission through an integrated team at GSFC. The Servicing Payload design, development and RSV integration will be conducted at GSFC.


The GNC Analyst will provide Spacecraft dynamics modeling and estimation/control design support for the OSAM-1 Rendezvous and Proximity Operations (RPO) Team. The OSAM-1 RPO subsystem is responsible for developing the algorithms and software for the rendezvous and capturing another vehicle

Modeling includes:

  • Flexible body dynamics and slosh
  • Actuators (thruster, reaction wheel, stepper motor, robot arm)
  • Sensors (gyro, GPSR, star tracker, accelerometer, LIDAR)
  • Synthetic imagery and ray tracing

Estimation/Control Design includes:

  • Inertial navigation and attitude estimation
  • Relative state estimation between two vehicles
  • Machine vision pose algorithms
  • Inertial navigation and attitude control
  • Relative state guidance for rendezvous
  • Fault detection, isolation, and resolution

The GNC Analyst will help develop a high fidelity simulation of the OSAM-1 mission that includes all mission phases.

Job duties include:

  • Develop and validate physics-based software model of the OSAM-1 hardware in C.
  • Develop and verify estimation and control algorithms.
  • Construct mission scenarios to conduct sensitivity and performance analyses
  • Provide analysis support throughout hardware integration and testing
  • Support the flight software integration and qualification testing
  • Support RPO team verification.




  • Bachelor’s degree in computer science, aerospace engineering, or closely related field with 4+ years of related experience. (2+ years with Master’s degree)
  • Experience developing a simulation and analyzing GNC performance
  • Experience developing and validating physics-based software models of hardware
  • Experience developing and analyzing state estimation and control algorithms
  • Proficient using Matlab and C. 


  • Experience with GNC on orbit operations of a spacecraft
  • Experience with spacecraft integration and testing
  • Experience with flight software integration and qualification
  • Familiarity with LIDARs and/or optical systems
  • Demonstrated exceptional performance in a team environment

COVID Policy: Prospective and/or new employees are required to adhere with SAIC's vaccination policy. All SAIC employees must be fully vaccinated and they must submit proof of vaccination on their first day of employment. Prospective or new employees may seek an exemption to the vaccination requirement at Contact Us and must have an approved exemption prior to the start of their employment. Where work is performed strictly at a customer site, customer site vaccination requirements preempt SAIC's vaccination policy.


SAIC® is a premier Fortune 500® technology integrator driving our nation's technology transformation. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure high-end solutions in engineering, digital, artificial intelligence, and mission solutions. Using our expertise and understanding of existing and emerging technologies, we integrate the best components from our own portfolio and our partner ecosystem to deliver innovative, effective, and efficient solutions that are critical to achieving our customers' missions.

We are more than 26,500 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer, fostering a respectful work culture based on diversity, equity, and inclusion that values all contributors. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.1 billion. For more information, visit

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