IN Brief:
- Sweden's Defence Materiel Administration has awarded Raytheon UK contracts for Landshield and Landshield Plus GPS anti-jamming systems.
- The standard Landshield uses a four-element antenna and can suppress up to three jammers, while the seven-element Landshield Plus supports suppression of up to six.
- The equipment is designed and manufactured in Britain, with customer quantities, platform assignments, contract values and delivery dates undisclosed.
Raytheon UK has secured contracts from Sweden’s Defence Materiel Administration, FMV, to supply Landshield and Landshield Plus GPS anti-jamming equipment, extending the use of British-manufactured technology intended to protect military navigation receivers from electronic interference.
The awards were disclosed on 21 October 2026 and cover two variants within the company’s Landshield family. The systems use antenna and digital processing technology to maintain access to suitable GPS signals in environments where electronic warfare activity or other interference can degrade satellite navigation.
Raytheon UK identifies land, maritime and airborne platforms among the equipment’s possible applications. Sweden has not disclosed which vehicles, aircraft or ships will receive the new systems, nor has it published contract values, quantities or delivery dates.
Military equipment depends on positioning, navigation and timing information for a wide range of functions, including movement, coordination and the operation of electronic systems. GPS receivers obtain this information from signals transmitted by satellites, but the signals reaching an antenna are relatively weak and can be disrupted by stronger transmissions from nearby sources.
Electronic jamming introduces unwanted radio-frequency energy that interferes with the reception or processing of legitimate navigation signals. Depending on the conditions, the receiver may produce degraded position information, lose satellite tracking or become unable to provide a usable navigation solution.
Landshield is designed to reduce the effect of such interference through controlled antenna reception and digital processing. Its approach differs from relying exclusively on filters that separate signals by frequency, because a jammer may operate within the same frequency bands used by the navigation receiver.
A multi-element antenna receives radio signals at several positions within a defined arrangement. The relative characteristics of the signals measured by those elements provide information about their arrival directions, allowing adaptive processing to alter the antenna’s effective reception pattern.
By changing the way signals from individual antenna elements are combined, the system can reduce sensitivity towards selected sources of interference while preserving usable reception from satellite signals where conditions permit. This process is commonly described as forming nulls in the antenna pattern.
The number of interfering sources that can be suppressed depends on the antenna design, available processing capability and characteristics of the received signals. The physical arrangement of a platform and the electromagnetic environment surrounding it can also influence the result.
Raytheon UK’s published specifications identify the standard Landshield as an integrated four-element dual-frequency antenna and anti-jamming processor consuming approximately 11 watts. The manufacturer states that it can suppress up to three simultaneous jammers across the GPS L1 and L2 frequency bands under its specified conditions.
Landshield Plus uses a seven-element configuration with additional processing capability. The manufacturer’s standard product specification identifies power consumption of approximately 18 watts, processing of up to seven dual-frequency channels and suppression of up to six simultaneous jamming sources.
Those specifications describe the product variants rather than performance established through Sweden’s procurement. Raytheon UK has also developed other configurations, including a more recent ten-channel variant of Landshield Plus, but the October contract does not establish that Sweden has selected that particular architecture.
Keeping the variants distinct is important because differences in antenna elements, processing resources and physical arrangements affect the equipment’s operating characteristics. A specification associated with one version cannot automatically be applied to every system sold under the Landshield name.
The products also provide information about detected interference. Raytheon states that Landshield Plus can identify characteristics of jamming sources, including their apparent direction and type, giving operators additional information about the surrounding electromagnetic environment.
Awareness of interference can support technical investigation and operational decisions, but direction information obtained from a single installation is not necessarily sufficient to determine a transmitter’s precise location. Locating an interference source may require measurements from additional equipment or platforms and suitable methods for combining those observations.
Spoofing presents a different navigation threat. Instead of overwhelming legitimate satellite signals, a spoofing system attempts to make the receiver accept misleading information that can cause incorrect positioning or timing calculations.
Raytheon UK describes spoofing detection within the Landshield product family, including functions that alert operators to potentially untrustworthy signals. Detection should not be confused with a guarantee that a receiver can reject every deceptive signal or maintain accurate positioning throughout all forms of interference.
Integration with a military platform introduces electrical, mechanical and radio-frequency requirements. Equipment must fit within available space and power limits, while antenna positioning can affect the signals received from both satellites and interfering transmitters.
Nearby metal structures, communications antennas and other electronic equipment can alter the local electromagnetic environment. Installation design therefore has to consider the placement of the antenna, cable routing, grounding and compatibility with the platform’s existing systems.
Different operating environments create further constraints. Aircraft installations must satisfy relevant structural, environmental and electrical requirements, while maritime platforms are exposed to salt, moisture and equipment arrangements that can complicate antenna placement. Land vehicles may need compact installations capable of tolerating vibration, shock and restricted mounting space.
Testing is required to establish that the chosen equipment performs as intended after installation. Laboratory measurements can assess radio-frequency characteristics and processing behaviour, while platform integration tests help identify interactions with nearby structures, electronic systems and the receiving equipment.
Raytheon UK develops and manufactures its anti-jamming technology in Britain, with established specialist facilities in Scotland. The company has supplied thousands of GPS protection systems to allied customers and has previously secured contracts involving armoured vehicles and remotely piloted aircraft.
Those earlier awards demonstrate applications across different equipment classes, but they do not identify Sweden’s selected installation configuration or establish the number of systems being procured. The current contracts remain separate from previously announced Landshield deliveries to other customers.
The Swedish acquisition adds to an established product line intended to maintain navigation resilience under electronic interference. Subsequent disclosures about receiving platforms, integration requirements and delivery milestones will determine how the equipment is incorporated into Sweden’s military systems.
