To develop Proximity Sensor of Naval Artillery Fuze for activating Fuze firing circuit

The Proximity Sensor shall function on proximity against fast moving high performance aerial targets and sea skimming missiles where the characteristics of the target are within the following envelope:

• Speed of the Target: Upto 1.5 Mach.
• Minimum Attack Height: > 5m above the peak of waves.
• Minimum Target Dia: 0.3 metres.
• Height of Function: 0.5m to 30m above the target.
• Range of Functioning: 500m from muzzle to Max. Gun range.

The Proximity Sensor:

• Should be mountable inside existing Artillery Proximity Fuze cone.
• Should comprise of RF antenna working on FMCW principle with characteristics of beam pattern such that the sensitivity at the front is zero and maximum at 30-50° w.r.t. fore and aft axis.
• Should survive the Naval SRGM Artillery Gun firing acceleration of Up to 20,000 g and 20,000 rpm.
• Should provide Sea clutter rejection.
• Should be immune to external RF noise.
• Should have no maintenance through its entire life cycle.
• Reliability ≥ 95%
• Shelf Life: Minimum 10-years with the required reliability.
• Operating conditions of -20°C to +55°C with Humidity of +95%
• The Proximity sensor is to be assembled inside plastic (Noryl, GFN2) enclosure (Radome) and potted with polyurethane potting material.

Future Expectation from the prototype / Technology developed

Indigenous source.