A UK-designed GPS jammer detector range for finding abnormal RF energy around GPS/GNSS frequencies — from a portable warning detector to unattended monitoring and a professional RF/GNSS analyser.
JGD-100 · JGD-110 · JGD-120
The range is deliberately split by application. You only pay for satellite analysis and remote communications when the job requires them.
A compact handheld instrument for quickly identifying abnormal RF energy in the GPS/GNSS L1 region.
Continuous unattended monitoring for vehicles, depots, plant and remote sites. When a significant event is detected, nominated personnel can be alerted by SMS.
An engineering instrument intended to show both the RF interference environment and what is happening to GNSS reception.
A GPS jammer detector is a radio-frequency monitoring instrument designed to identify abnormal interference in the frequency bands used by satellite-navigation receivers. In the UK, the phrase is commonly used for equipment intended to detect interference affecting GPS and, increasingly, the wider GNSS environment.
A dedicated detector monitors the relevant GNSS band for RF energy inconsistent with normal satellite reception. This is different from relying only on a receiver reporting that it has lost position.
Loss of position can also result from antenna faults, shielding, poor sky view or installation problems. Professional investigation therefore benefits from comparing RF activity with GNSS receiver health.
Time-stamped event logging can help fleet, plant, security and engineering users establish when abnormal interference occurred and compare it with vehicle, tracker or site events.
The correct instrument depends on the job. A handheld detector is useful for rapid checks and field investigation. A fixed detector is better when interference is intermittent and must be captured unattended. An engineering analyser is appropriate when the requirement is to understand both the RF environment and the effect on satellite reception.
For vehicle and fleet work, useful capabilities include clear signal-strength indication, event logging and portable operation. For depots, critical sites and remote assets, continuous monitoring and remote alerts can be more valuable than a handheld display. For technical investigations, RF level, GNSS C/N₀, satellites visible/used and trend logging provide much stronger diagnostic evidence.
Detection answers the first question: is abnormal RF interference present? Location is a separate task. Finding the source may require directional measurements, comparative signal levels, movement around the affected area or a wider RF interference investigation. We therefore separate detector products from our on-site investigation service.
Common applications include fleet and vehicle tracking, plant and machinery protection, depots and logistics sites, security investigations, GNSS-dependent equipment, engineering surveys and locations where intermittent loss of GPS needs to be distinguished from an antenna or receiver fault.
A receiver can lose satellites because of shielding, antenna faults, multipath or poor sky view. GNSS Guard Remote and Pro are intended to compare abnormal RF energy with receiver health, helping distinguish an interference event from ordinary reception problems.
Final detection logic, sensitivity and classification thresholds will be published only after engineering validation.
Remote monitoring turns a local warning into an actionable event for a fleet manager, security team or engineer away from the site.
Continuously monitor the relevant RF environment and GNSS receiver condition.
Compare abnormal RF activity with satellite signal quality and receiver performance before escalating an event.
Send a time-stamped warning to nominated personnel, followed by a restoration message when the event ends.
Investigate interference affecting vehicle tracking and positioning.
Monitor sites exposed to intermittent or passing GNSS interference.
Remote warning where GNSS tracking forms part of asset protection.
Monitor the RF environment around GNSS-dependent timing systems.
Investigate unexplained degradation during field operations.
Portable indication and logging for interference surveys.
Identify abnormal GNSS-band RF activity in monitored locations.
Observe receiver behaviour alongside interference measurements.
Tell me whether you need a handheld warning detector, unattended SMS monitoring or an engineering analyser. Early enquiries will help shape the final specification.