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Core Competencies


SSD provides prototyping, software development and system design for space, airborne, and ground mission critical operational and support systems. SSD supports our nation in its national security and scientific endeavors with innovative and advanced solutions for a wide range of customer challenges.

  • Spacecraft Software Systems
  • Payload Software Systems
  • Telecommunications
  • Aerospace
  • Sustaining Engineering
  • Independent Verification and Validation (IVV)
  • Web Design Services
  • Engineering Technical and Managerial Support, colocated with customer

Past Performance

NASA Goddard Space Flight Center

  • CAPS & CIRS instruments on the Cassini Spacecraft (payload software development, sustaining engineering, operational sequence generation, simulation development, ground algorithm software development)
  • Terra, Aqua, and Aura Earth Observing Satellites (Spacecraft software development, IVV, sustaining engineering)
  • Lunar Reconnaissance Observatory (LRO) (Spacecraft software testing and integration & test)
  • Telemetry Data Relay Satellite (TDRS) (Spacecraft sustaining engineering)
  • Gamma-ray Large Area Space Telescope (GLAST) (Project office Spacecraft software acquisition support)
  • LandSat Data Continuity Mission (Project office Spacecraft and payload software acquisition support)

Lockheed Martin

  • Software Development for Terra Satellite (Executive Services, Command and Data Handling, Electrical Power System, Fault Management)
  • Global Positioning Satellite Processing Unit software development (Ascent software system)

International Telephone and Telegraph (ITT)

  • Global Positioning Satellite (GPS) satellite and payload software development (Executive Services, Operating System, Uplink Data Management, Nuclear Burst Detection System, Ground Support Equipment software development.

Allied Signal

  • Supported Auto-Pilot and Display Manager software development for C130 and C141 aircrafts (Executive Services, Redundancy Management, Display Software)


SSD is set apart in its expertise and time proven software system methodologies to exceed our customer’s expectation and as a small agile software company, we are poised to rapidly create, adjust, and optimize our business processes to the customer" unique requirements.

  • Expertise in hard real-time software systems
    • Re-wrote sections of C130/C141 software reducing total execution reserve by 50%
    • Re-wrote CAPS payload software reducing memory utilization by a factor of 2.
  • Innovative and flexible in servicing customer needs
  • An innovative solution provider to resolve complex software system problems
  • End to end software system support.

Company History

Founded in 1994, SSD has carved out a niche in the aerospace industry by providing software system development, engineering services, training and maintenance to offer its customers a complete solution using state of the art technologies.

DUNs Number: 931472575 8(a), SDB Certified NAICS: 541511,541512, 541513, 541519, 541712 Cage Code: OZYL3

Donald R. Glenn – 9250 Bendix Road, North, Suite 230, Columbia, MD 21045 - phone: 443-535-9150 Fax 443-535-9170 -