Startup · Australia
Silentium Defence
HQ Australia
Silentium Defence is a global leader in passive radar systems for defence and space surveillance. Detect threats covertly — no emissions, no spectrum licence needed.
Funding1 round
- Equity raised
- Undisclosed
- Debt, secondaries & grants
- A$200K
- Latest
- 200K AUDGrant · 2017
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| 2017 | Grant | 200K AUD | — | — | TechInSA | Confirmed |
- 200K AUD2017
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems5
MAVERICK Excalibur
Relocatable three-dimensional passive radar for surface and air surveillance.
MERLIN
Mission simulation software for passive-radar testing, training and integration.
Newest unveiled first. Open a system for its milestone timeline, components and sources.
Capabilities3
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Air and missile defense | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market. | Reported |
| ISR and targeting | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market. | Reported |
| Sensing and signature management | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market. | Reported |
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market.—Reported
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market.—Reported
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Passive radar systems for defence and space surveillance, with defense as the stated market.—Reported
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People2
| Person | Role |
|---|---|
| James Palmer | CEO and Co-Founder |
| Simon Palumbo | co-founder and Chief Experience Officer |
Sources11
Show all 11 sources and supporting evidence
Profile3
- 1
Silentium Defence · Supports Organization · description, Organization · name, Organization · website
“Silentium Defence is a global leader in passive radar systems for defence and space surveillance. Detect threats covertly — no emissions, no spectrum licence needed.”
- 2
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "Australia", "hq_iso2": "AU", "id": "04b4372f-2aec-475d-8e58-ba1b820a6813"}”
- 3CompanySilentium Defence | LinkedIn
LinkedIn · Supports Organization · ownership
“Type Privately Held”
Systems5
- 4
Silentium Defence · Supports System
“# MAPIT MAPIT is a cross-domain mission planning tool that enables operators to undertake performance prediction for different deployment scenarios of Silentium Defence passive radar products, whether standalone or integrated.”
- 5
Silentium Defence · Supports System
“# MERLIN Simulate. Validate. Integrate. ## ACCELERATE *MISSION READINESS THROUGH VIRTUAL TESTING* MERLIN is a mission simulation tool that enables virtual testing, training and validation of passive radar performance across real-world scenarios, accelerating deployment confidence.”
- 6
Silentium Defence · Supports System
“# *MAVERICK* Excalibur ### Rugged, Rapid, Relocatable Radar Relocatable 3D passive radar for comprehensive surface to air surveillance.”
- 7
Silentium Defence · Supports System
“# *Maverick* M8 ### Tactical. Lightweight. Rapid deployment. Low SWaP passive radar for near 360° threat detection – for land, sea and air.”
- 8
Silentium Defence · Supports System
“# OMNIGUARD ### Low Latency. 24/7 Surveillance of Resident Space Objects in Low Earth Orbit. Wide field-of-view passive radar products and data feeds for 24/7 space surveillance.”
Funding1
- 9
Silentium Defence · Supports Funding round · amount
“Silentium Defence has won $200,000 in State Government funding.”
People2
- 10
lockheedmartinau.mediaroom.com · Supports Role
“Silentium Defence's co-founder and Chief Experience Officer, Simon Palumbo, thanked Lockheed Martin and highlighted the invaluable access the business had been provided as part of the program.”
- 11
the-briefing-room.podbean.com · Supports Role
“In this episode of The Briefing Room, Peta Ellis sits down with James Palmer, CEO and Co-Founder of Silentium Defence, the Adelaide-based company redefining what it means to see without being seen.”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.