Defense Space

Space-Based Missile Warning and Defense

L3Harris is propelling the space industry forward with responsive, agile and affordable missile warning and defense solutions.

L3Harris Space-based Missile Warning and Defense

Space Control

L3Harris plays a key role in ensuring the U.S. and allies have freedom of action in space. The company also provides technology for the other side of that equation – denying that freedom to adversaries when needed. L3Harris provides a wide range of space control capabilities, including live, virtual, constructive environments for training and engineering, cybersecurity and program management. L3Harris is also at the forefront of space electronic warfare (EW), providing the first-ever ground-based satellite denial capability.

L3Harris Capabilities:

• Counter Communications System

• Space Test and Training Range

L3Harris Counter Communications System

Space Domain Awareness

The key to dominating the space domain is knowing exactly what is in orbit. L3Harris technology detects, tracks and identifies all artificial objects in Earth orbit. The company provides innovative ground- and space-based sensors and algorithmic capabilities and tools to support rapid data acquisition, extraction and exploitation. L3Harris is also modernizing DoD sensors to bring Cold War-era sensors into today’s fight.

L3Harris Capabilities:

• Mission Planning Tool

• Advanced Radar Solutions for Space Domain Awareness

• Advanced Electro-optical System R&D and Sustainment for Space Domain Awareness

L3Harris Mission Planning Tool

Operational Space Command and Control (C2)

L3Harris joins full SDA and space control resources to provide critical orbital analysis support, training and tools to all space C2. We support all levels of space C2 – tactical, operation and strategic – and continue to develop a training and wargaming environment to guide controllers and decision-makers.

Space Battle management Command, Control & Communications (BMC3)

Featured Defense Space Capabilities

Space is vital to our modern way of life. But threats to our nation's space assets grow in scope and lethality each day. L3Harris’ space BMC3 solutions close the warfighting observe-orient-decide-act loop – to ensure that the U.S. is always faster than the threat.

Space BMC3

Space is vital to our modern way of life. But threats to our nation's space assets grow in scope and lethality each day. Our space BMC3 solutions close the observe-orient-decide-act loop – to ensure that the U.S. is always faster than the threat.

Space Superiority Sustainment

Space Superiority Sustainment

Counter communications system

Counter Communications System

L3Harris Olympus Modeling and Simulation

Olympus

Space Test and Training Range

Space Test and Training Range

L3Harris Mission Planning Tool

Mission Planning Tool

Advanced Radar Solutions header

Advanced Radar Solutions for Space Domain Awareness

Advanced Electro-Optical System R&D and Sustainment for Space Domain Awareness

L3Harris Counter Communications System

Space Electronic Warfare

All Defense Space Capabilities

Advanced Electro-Optical System R&D and Sustainment for Space Domain Awareness

Advanced Radar Solutions header

Advanced Radar Solutions for Space Domain Awareness

L3Harris AES/GCM Encryption Unit (AGU)

AES/GCM Encryption Unit (AGU)

Agile Guardian

Autonomous Flight Termination Unit (AFTU)

Autonomous Flight Termination Unit (AFTU)

Autonomous Flight Termination Unit - Miniature (AFTU-M)

Autonomous Flight Termination Unit - Miniature (AFTU-M)

C/TT-600 Software-Defined Radio

C/TT-600 Software-Defined Radio

Counter communications system

Counter Communications System

CST-100 Starliner

CST-100 Starliner

Eclipse 500

L3Harris High Compaction Ratio Antenna

High Compaction Ratio Antenna

HPIU for resilient space architecture

Hosted Payload Interface Unit (HPIU)

Launch Vehicle Avionics

Launch Vehicle Avionics

Live iterations for Palehorse Troop

M-Code Navigation and A-PNT Solutions

M-Code Type II

KI-700 encryption and decryption unit for satellite command, telemetry, crosslink and comms

Medium Rate Advanced Encryption Standard (AES) Unit (KI-700)

L3Harris Mission Planning Tool

Mission Planning Tool

L3Harris' NASA Orion audio system will play a mission-critical role in returning astronauts to the lunar surface as part of the Artemis missions.

NASA Orion Audio System

Rendering of the Navigation Technology Satellite-3 (NTS-3) over North America.

NTS-3

L3Harris Olympus Modeling and Simulation

Olympus

Orion

PA-513

Positioning Navigation and Timing

Positioning, Navigation and Timing - PNT

Protected Global Positioning System

Protected Global Positioning System

Protected Global Positioning System-Mini (PGPS-M)

Protected Global Positioning System-Mini (PGPS-M)

L3Harris Satellite and Payload Processing

Satellite and Payload Processing

CDU-200 Secure Satellite Communications Encryption Unit

Secure Satellite Communications Encryption Unit (CDU-200)

MCU-110C provides secure uplink and downlink protection for satellite communications links

Secure Satellite Communications Encryption Unit (MCU-110C)

Space and Intelligence Communications - Telemetry and RF products

Space and Intelligence Communications

Space is vital to our modern way of life. But threats to our nation's space assets grow in scope and lethality each day. L3Harris’ space BMC3 solutions close the warfighting observe-orient-decide-act loop – to ensure that the U.S. is always faster than the threat.

Space BMC3

Illustration of Tranche 1 tracking layer, a missile-tracking sensor satellite in orbit

Space Development Agency's Proliferated Warfighter Space Architecture Program

L3Harris Counter Communications System

Space Electronic Warfare

Space Test and Training Range

Space Test and Training Range

L3Harris Space-based Missile Warning and Defense

Space-based Missile Warning & Defense

Spacecraft Communications

L3Harris SpaceSentry Modular TCPED System

SpaceSentry Modular TCPED System

Spaceview™ Small Satellite Imaging Solutions

SPATIAL

T-740 S-Band Launch Vehicle Transmitter

T-740E S-Band Launch Vehicle Transmitter

TruTrak-M HDA

ims_maritime_product_teaser-cs-east-unity-CP-920x490

UnityCP® Application-Specific Integrated Circuit

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Featured News

U.S. Space Force's Ground-Based Optical Sensor System receives an upgrade at the Maui Space Surveillance Complex. Thumbnail image

Editorial | 04. 15. 2026

Advancing America’s Space Defense: L3Harris Completes Critical Milestone on Way to Delivering GBOSS Capability to the Warfighter

L3Harris has successfully completed contractor verification testing (CVT) for the GBOSS system at the Maui Space Surveillance Complex.

U.S. Space Force's Ground-Based Optical Sensor System receives an upgrade at the Maui Space Surveillance Complex. Thumbnail image

Editorial | 04. 15. 2026

Advancing America’s Space Defense: L3Harris Completes Critical Milestone on Way to Delivering GBOSS Capability to the Warfighter

Editorial | 04. 14. 2026

Reimagining Earth Measurement for the AI Era: L3Harris and Xoople Develop a New Spaceborne Capability

First full disk image of Earth from GOES-19

Editorial | 04. 14. 2026

GOES-19 One Year Later: Protecting Communities Through Advanced Technology

L3Harris is designing and building 18 infrared space vehicles for the Space Development Agency’s Tranche 2 Tracking Layer program that will provide near-global missile warning and tracking coverage.

Editorial | 04. 13. 2026

When Missiles Move at 5X the Speed of Sound, Timing Is Everything

The L3Harris HBTSS satellite is proven on orbit, successfully demonstrating tracking against a live hypersonic target.

Press release | 04. 08. 2026

Proven On Orbit: L3Harris Congratulates Missile Defense Agency for Receiving Top Defense Honor for HBTSS

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Air force and space force assets in the air and atmosphere

Supporting the Air and Space Forces

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