# Guardian
*sensor . products*

MetaSensing Guardian multi-mode X-band SAR surveillance radar for defence ISR applications.

## Specifications
- **manufacturer**: metasensing
- **sensor**: {"instrument_family":"sar","measurement_principle":"active","frequency_band":"X","centre_frequency_mhz":9600,"polarisation_modes":["HH"],"modes":[{"name":"Spotlight SAR","resolution_range_m":0.3},{"name":"Stripmap SAR","resolution_range_m":3},{"name":"GMTI","notes":"Ground Moving Target Indicator; detection range >200 km"},{"name":"MMTI","notes":"Maritime Moving Target Indicator"},{"name":"ISAR","notes":"Inverse SAR for target classification"}],"notes":"X-band airborne SAR/ISAR/MTI multi-mode surveillance radar. Mass 35 kg. Compact pod or platform-integrated form factor. Solid state technology. Embedded heterogeneous computing (FPGA, GPU, CPU) for real-time processing. 360-degree azimuth coverage. All-weather day/night. Deployed on tactical UAV/TUAS platforms for border and maritime surveillance (Mediterranean, Middle East, Asia regions). Multiple units delivered 2022+. No EO (Earth science) applications documented; primary use is defence ISR. ASSUMED VALUES (schema requires non-null): centre_frequency_mhz=9600 (standard X-band nominal; not confirmed in operator sources); polarisation_modes=[HH] (assumed for ISR; multi-pol capability not confirmed). See research_notes.unverified for details. Pending schema change to allow nulling mandatory SAR spec fields."}
- **deployment context**: airborne
- **entity type**: sensor
- **last verified date**: 2026-06-11
- **verified by**: operator
- **claim status**: unclaimed
- **provider**: metasensing
- **attributes**: {"kind":"sensor","product_status":null,"manufacturer":"metasensing","description":"MetaSensing Guardian multi-mode X-band SAR surveillance radar for defence ISR applications.","sensor":"{\"instrument_family\":\"sar\",\"measurement_principle\":\"active\",\"frequency_band\":\"X\",\"centre_frequency_mhz\":9600,\"polarisation_modes\":[\"HH\"],\"modes\":[{\"name\":\"Spotlight SAR\",\"resolution_range_m\":0.3},{\"name\":\"Stripmap SAR\",\"resolution_range_m\":3},{\"name\":\"GMTI\",\"notes\":\"Ground Moving Target Indicator; detection range >200 km\"},{\"name\":\"MMTI\",\"notes\":\"Maritime Moving Target Indicator\"},{\"name\":\"ISAR\",\"notes\":\"Inverse SAR for target classification\"}],\"notes\":\"X-band airborne SAR/ISAR/MTI multi-mode surveillance radar. Mass 35 kg. Compact pod or platform-integrated form factor. Solid state technology. Embedded heterogeneous computing (FPGA, GPU, CPU) for real-time processing. 360-degree azimuth coverage. All-weather day/night. Deployed on tactical UAV/TUAS platforms for border and maritime surveillance (Mediterranean, Middle East, Asia regions). Multiple units delivered 2022+. No EO (Earth science) applications documented; primary use is defence ISR. ASSUMED VALUES (schema requires non-null): centre_frequency_mhz=9600 (standard X-band nominal; not confirmed in operator sources); polarisation_modes=[HH] (assumed for ISR; multi-pol capability not confirmed). See research_notes.unverified for details. Pending schema change to allow nulling mandatory SAR spec fields.\"}","bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"airborne"}
- **technology**: radar
- **relevance**: ancillary

## Editorial
Guardian is an airborne X-band multi-mode SAR radar developed by MetaSensing for defence ISR applications. The system weighs 35 kg and integrates embedded heterogeneous computing (FPGA, GPU, CPU) for real-time on-board processing. Operational modes include spotlight SAR (0.3 m resolution), stripmap SAR (3 m resolution), Ground Moving Target Indication (GMTI, detection range over 200 km), Maritime Moving Target Indication (MMTI), and Inverse SAR (ISAR) for target classification. The sensor is designed for integration on tactical UAV and TUAS platforms and provides all-weather, day-night 360-degree azimuth coverage. Multiple units have been delivered since 2022 for border and maritime surveillance operations in the Mediterranean, Middle East, and Asia regions.[^metasensing-guardian-page][^metasensing-guardian-isr-deliveries][^metasensing-guardian-maritime] Public MetaSensing materials frame Guardian for defence ISR; no documented EO Earth-science application has been identified in available sources.

## Sources
- [metasensing-guardian-page] | Guardian SAR product page, MetaSensing | https://metasensing.com/guardian/ | tier=operator-marketing | accessed=2026-06-11
- [metasensing-guardian-isr-deliveries] | Guardian ISR radar deliveries and orders, MetaSensing | https://metasensing.com/guardian-isr-radar-ongoing-deliveries-and-new-orders/ | tier=operator-press | accessed=2026-06-11
- [metasensing-guardian-maritime] | Guardian selected for maritime surveillance in Mediterranean, MetaSensing press release | https://metasensing.com/press-release-metasensing-guardian-sar-selected-for-autonomous-maritime-surveillance-in-the-mediter/ | tier=operator-press | accessed=2026-06-11

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Source: https://eo-atlas.org/products/sensor/guardian-sar
Maintainer: SpectraWorks B.V. (CC-BY 4.0)