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RF Sensors and Seekers

DAA scientific applications and research from sara.com flight


SARA products feature radio frequency (RF), passive detection, geolocation, and homing capabilities.

SARA has pioneered the development of small, low-cost, lightweight, low-power,  high-accuracy radio frequency direction finding systems for airborne and ground systems, including homing seekers and geolocation systems. Our capabilities and expertise incorporate Systems Engineering, Modeling, Design & Development, Integration & Testing to include environmental, EMI, EMC and RF Chamber testing; and Field & Flight
testing from planning to test direction and analysis.

SARA Products and Capabilities
  • RF Homing Seekers  (Low SWaP & Low Cost)
  • Seeker Emulators  (Bench Support, HIL Support)
  • RF Sensor Systems  (Detection & Geolocation)
  • RF Antenna Design & Development
  • Advanced Broadband Design & Development
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SARA RF passive systems deliver low-cost state-of-the-art solutions.

SARA Home on Jammer (HOJ) Passive RF Seekers have been demonstrated in tactical environments on multiple weapon platforms. Recently, SARA won a contract awarded by the U.S. Air Force Life Cycle Management Center (AFLCMC) for the acquisition of Home-on GPS Jam Seekers and the integration of extended range seekers into existing Joint Direct Attack Munition wing kits. Read all about it here. 

  • Low Size, Weight, & Power
  • WOSA & AFSIM Compliance
  • Utilizes A Common Munition Interface
  • High TRL Fixed, Mobile, Ground, & Airborne Applications
  • Environmentally Rugged Mil-spec Compliant Solid State (No Moving Parts)
  • Receiver Processor Multiple Band Capability Design Supports Bands Of Interest
  • Extensively Modeled Against A Wide Variety Of Enemy Laydowns & Engagement Scenarios
  • Integrated Into A Collaborative Swarming Tactical Munition
  • Supports Airborne Or Ground Based Situational Awareness
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aircraft photos seekers

RF Sensor Products

equipment product 1

SARA RF Homing Seeker

Applications: Integrated onto a variety of Weapon and UAS Platforms

Features and Specifications:

  • Sensor type: passive, receive only
  • Operating bands: GPS L1 and/or L2, Link 16, S-band, and other bands of interest
  • Nominal voltage: 28.0 VDC
  • Operating voltage range: 19.2 to 34.0 VDC
  • Current at 28.0 VDC: O.40 Amps ± 0.05
  • Weight: 4.2 lbs.


equipment product 5 sara

SARA HOJ GPS Seeker Emulator

Applications: supports software interface and HIL integration

Description and Collaborative SDB PN 50-100304:

  • Emulates Home on GPS Jammer Seeker: L1 &L2
  • External Communications: RS-422
  • Maximum Number of EMitters per Band: 1
  • Present Jammer Antenna Patterns: 4
  • Present Seeker Antenna Patterns: 1
equipment product 3

Seeker Emulator

Applications: WOSA compliant software interface and HIL integration capability.

Description and Part Number PN 52-100200:

  • Emulates Home on GPS Jammer Seeker : L1&L2
  • Emulates Microwave Seeker: 13 bands
  • Use-modifiable Seeker’s RF Specification: Yes
  • WOSA Compliant: Yes
  • External Communications: Ethernet
  • Maximum Number of Emitters per Band: 50
  • Preset Jammer Antenna Patterns: 5
  • User-defined Jammer Antenna Patterns: Yes
  • Present Seeker Antenna Patterns: 1
  • User-defined Seeker Antenna Patterns: Yes
  • Supports future upgrades for “other” seekers: Yes
  • Bench or Rack Mountable: Yes
test equipment in use

RF Detection and Geolocation

Applications: Ground-based jammer detection and geolocation awareness for borders, facilities, and other protected perimeters. 

MAGPIE: Jammer Detection, Jammer Geolocation, Ground Based, Fixed

  • Monitoring for Advanced Geolocation Processing and Interference Exploitation” (MAGPIE)
  • Data from multiple nodes can be combined by the end user to geolocate and identify each jammer
  • Facilitate the location of GPS jamming sources by providing a GPS jammer direction-finding capability
  • Technology supports airborne applications
equipment product 2

Low-Cost GPS Detection and Pointing

Applications: Automotive and airborne or fixed at airfields and border terminals.

Hammerhead: Jammer Detection, Jammer Direction Finding, Vehicle-based, Mobile, Port of entry, Fixed

  • Provides the capability to detect electromagnetic radiating sources in the GPS spectrum (i.e., GPS jammers)
  • Provides a GPS jammer direction-finding capability

Pioneering Low-Cost, Lightweight,
Low-Power, and High-Accuracy
State-of-the-Art Solutions

35 Years of Experience

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