INNOVATIVE DIGITAL PROXIMITY FUZE FOR 76/62 mm GUN (Microwave, Programmable) Companies Marco BROGI Maurizio CALEO Authors Antonio CARRIERO 45th Fuze Conference, Long Beach, CA, April 16-18 2001
Report Documentation Page Report Date 17Apr2001 Report Type N/A Dates Covered (from... to) - Title and Subtitle INNOVATIVE DIGITAL PROXIMITY FUZE FOR 76/62 mm GUN (Microwave, Programmable) Contract Number Grant Number Program Element Number Author(s) Carriero, Antonio; Brogi, Marco; Caleo Maurizio Project Number Task Number Work Unit Number Performing Organization Name(s) and Address(es) Alenia Companies Sponsoring/Monitoring Agency Name(s) and Address(es) NDIA (National Defense Industrial Assocation) 211 Wilson BLvd., Ste. 400 Arlington, VA 22201-3061 Performing Organization Report Number Sponsor/Monitor s Acronym(s) Sponsor/Monitor s Report Number(s) Distribution/Availability Statement Approved for public release, distribution unlimited Supplementary Notes Proceedings from The 45th Annual Fuze Conference, 16-18 April 2001 Sponsored by NDIA, The original document contains color images. Abstract Subject Terms Report Classification unclassified Classification of Abstract unclassified Classification of this page unclassified Limitation of Abstract UU Number of Pages 23
ITALIAN NAVY awarded the development contract ALENIA DIFESA OTOBREDA DIV. (former OTO Melara) computer modeling µw sensor signal processor firing tests SIMMEL DIFESA SpA (heritage from Borletti and BPD) fuze integration impact sensor post-impact delay battery S&A pyrotechnic chain
FUZE MAJOR FEATURES PROGRAMMABILITY OF OPERATING MODES from the FCS through a setter 5 OPERATING MODES PROXIMITY vs SEA SKIMMER (default mode) PROXIMITY vs FIXED WING AIRCRAFT PROXIMITY vs ROTARY WING AIRCRAFT PROXIMITY vs SURFACE TARGETS DELAYED IMPACT vs REINFORCED TARGETS 2 BACK-UP MODES (not available if delayed impact is selected) UNDELAYED IMPACT SELF DESTRUCTION
SAFETY SYSTEM FUZE MAJOR FEATURES continued COMPLIANT WITH STANAG 4187 SAFE SEPARATION DISTANCE (MECHANICAL ARMING) > 100 m OPERATING TEMPERATURE RANGE 31 C +63 C STORAGE TEMPERATURE RANGE 40 C +71 C
ELECTRONIC SETTING SYSTEM FOR 76 mm PROXIMITY FUZE CONTACTOR SETTER/CONSOLLE/FCS CONNECTION FUNCTIONAL FUNCTIONAL BLOCK BLOCK DIAGRAM DIAGRAM CUT-OUT COMMAND CUT-OUT CMD FCS Interface SETTER Interface CONTROL UNIT COMMUT CMD FUZE DATA FUZE Interface CONTACTOR FUZE SETTER INSTALLATION INSTALLATION ON ON GUN GUN ELEVATING ELEVATING MASS MASS (FULL DUPLEX Serial Communications) Supply 115 V/400 Hz
ELECTRONIC SETTER FOR 76 mm PROXIMITY FUZE DEVELOPMENT DEVELOPMENT COMPLETED COMPLETED 44 SYSTEMS SYSTEMS ORDERED ORDERED BY BY ITALIAN ITALIAN NAVY NAVY FOR FOR NEW NEW FPB s FPB s 18 18 SYSTEMS SYSTEMS WILL WILL BE BE INSTALLED INSTALLED ON ON EXISTING EXISTING SHIPS SHIPS
ELECTRONIC SETTER FOR 76 mm PROXIMITY FUZE FUNCTIONS FUNCTIONS SELECT THE THE OPERATING MODE MODE (PROXIMITY/DELAYED IMPACT). ENABLE FUZE FUZE RECEIVER JUST JUST BEFORE TARGET INTERCEPT. OPTIMIZE PROXIMITY PERFORMANCE AGAINST DIFFERENT KINDS KINDS OF OF TARGETS BY BY SELECTING DEDICATED SOFTWARE. RETAIN THE THE COMPATIBILITY WITH WITH IN-SERVICE FUZES FUZES
µ W sensor Digital signal processor Undelayed firing circuit Electronic detonators S & A Relay charge Booster charge Operating programs memory Impact sensor Delayed firing circuit Fuze tail Setter interface Electronic head Contact rings Reserve battery
Fuze layout
FUZE TECHNICAL DESCRIPTION ELECTRONIC ELECTRONIC HEAD HEAD BREAKDOWN BREAKDOWN CASE SIGNAL PROCESSOR CASE IMPACT SENSOR PROXIMITY SENSOR OGIVE SIGNAL PROCESSOR CASE IMPACT SENSOR RF SENSOR OGIVE INTERFACE ELECTRONIC ELECTRONIC HEAD HEAD ASSEMBLY ASSEMBLY
TELEMETRY PROJECTILE FOR IN FLIGHT TEST USED DURING FUZE DEVELOPMENT FUZE UNDER TEST TELEMETRY EQUIPMENT 22 A.C. A.C. CHANNELS CHANNELS FOR FOR SENSORS SENSORS SIGNALS SIGNALS (WIDEBAND) (WIDEBAND) 22 D. D. C. C. CHANNELS CHANNELS FOR FOR POWER POWER SUPPLY SUPPLY CHECK CHECK TELEMETRY ANTENNA 11 TRIGGER TRIGGER CHANNEL CHANNEL FOR FOR DETONATION DETONATION CHECK CHECK
KEY PARAMATERS WHY A NEW FUZE TECHNOLOGIES SENSITIVITY RADIUS BURST POINT ACCURACY ECM & SEA CLUTTER REJECTION DIGITAL SIGNAL PROCESSING MICROWAVE SENSOR PROGRAMMABILITY IMPROVE 76 mm AIR DEFENSE CAPABILITY MAXIMIZE AMMUNITION TERMINAL EFFECTIVENESS
CHARACTERISTICS OF THE NEW MICROWAVE FUZE USEFUL BURST ZONE FOR AMMUNITION TERMINAL EFFECTIVENESS TRIGGER POINT ACCURACY (1 m) BURST BURST POINT POINT OPTIMIZATION OPTIMIZATION ACCOUNTING ACCOUNTING FOR FOR MISS MISS DISTANCE DISTANCE AND AND RELATIVE RELATIVE INTERCEPTION INTERCEPTION SPEED SPEED INSENSITIVE INSENSITIVE TO TO SEA SEA CLUTTER CLUTTER ECM ECM PROTECTION PROTECTION
ACHIEVED BY HIGH SENSITIVITY RADIUS LOW LOW NOISE NOISE SENSOR SENSOR HIGH HIGH COMPUTATION COMPUTATION CAPABILITY CAPABILITY DIGITAL DIGITAL SIGNAL SIGNAL PROCESSOR PROCESSOR FFT FFT AND AND PATTERN PATTERN MATCHING MATCHING ALGORITHMS ALGORITHMS CLUTTER ECHO DOPPLER TIME (sec) TIME (sec) CLUTTER AND ECHO DOPPLER TIME (sec)
REJECTION OF SEA CLUTTER NOISE AND IMPROVEMENT TO TARGET DETECTION RANGE BODY ANTENNA FUZE NEW MICROWAVE FUZE 30 30 60 60 INCREASE TARGET DETECTION RANGE REDUCE CLUTTER NOISE
REJECTION OF SEA CLUTTER NOISE ACHIEVED BY OPERATING OPERATING NARROW NARROW BANDWIDTH BANDWIDTH ANALYSIS ANALYSIS TO TO SEPARATE SEPARATE TARGET TARGET SIGNAL SIGNAL FROM FROM CLUTTER CLUTTER NOISE NOISE INCREASING INCREASING FUZE FUZE RF RF FREQUENCY FREQUENCY TO TO INCREASE INCREASE THE THE TARGET/CLUTTER TARGET/CLUTTER SEPARATION SEPARATION POWER SPECTRUM CLUTTER BANDWIDTH Ft HP ECHO TARGET DOPPLER Ft LP SPECTRUM SPECTRUM OF OF SIGNAL SIGNAL (CLUTTER (CLUTTER AND AND ECHO ECHO DOPPLER) DOPPLER) RECORDED RECORDED ABOUT ABOUT 90 90 m BEFORE BEFORE TARGET TARGET INTERCEPT INTERCEPT SIGNAL AFTER PROCESSING PROCESSING BANDWIDTH FREQUENCY
LOW SENSITIVITY TO EM ENVIROMENT ACHIEVED BY AN AN ELECTRONIC SETTER MOUNTED ON ON THE THE GUN GUN WHICH ENABLES THE THE FUZE FUZE PROXIMITY MODE MODE ONLY ONLY IN IN VICINITY OF OF TARGET USING USING NARROW BANDWITH SENSOR, ROBUST DIGITAL SIGNAL PROCESSING, ADVANCED SW SW LOGICS
PERFORMANCES IN PRIMARY ROLE Primary Role :: ANTIMISSILE Radial Sensitivity :: > 10 10 m Action Probability :: > 95% 95% Level on on sea sea :: down to to 2 m
IMPROVEMENTS TO THE 76/62 GUN BASED SYSTEM COMPARISON COMPARISON BETWEEN BETWEEN NEW NEW MICROWAVE MICROWAVE FUZE FUZE AND AND BODY BODY ANTENNA ANTENNA FUZES FUZES (SEA (SEA SKIMMING SKIMMING MISSILE) MISSILE) MICROWAVE MICROWAVE BODY BODY ANTENNA ANTENNA RADIAL RADIAL SENSITIVITY SENSITIVITY > 10 10 m 33 m TRIGGERING TRIGGERING ACCURACY ACCURACY 11 m 22 m DETONATION DETONATION POINT POINT OPTIMIZATION OPTIMIZATION ACCURATE ACCURATE (1) (1) COARSE COARSE SEA SEA CLUTTER CLUTTER REJECTION REJECTION VERY VERY HIGH HIGH MEDIUM MEDIUM ECM ECM PROTECTION PROTECTION VERY VERY HIGH HIGH LIMITED LIMITED (1) Function of relative speed and miss distance
FIRING TEST AGAINST LOW ALTITUDE TARGET TEST LOCATION: BALIPEDIO COTTRAU LA SPEZIA 15 JUNE 2000 8 ROUNDS FIRED WITH MISS DISTANCES BETWEEN 3 AND 6 m MOVIE SHOWING 8 FIRINGS
ACHIEVED BY Firing Direction ACCURACY OF BURST POINT HIGH HIGH SPEED SPEED COMPUTATION COMPUTATION FOR FOR SIGNAL SIGNAL FREQUENCY FREQUENCY ANALYSIS ANALYSIS TRIGGER TRIGGER DECISION DECISION MADE MADE BY BY ADVANCED ADVANCED SIGNAL SIGNAL PROCESSING PROCESSING INSTEAD INSTEAD OF OF TIME/AMPLITUDE TIME/AMPLITUDE ANALOG ANALOG PROCESSING PROCESSING LIVE TEST RECORDS Altitude (m) Burst Point Distance to Target (m)
DEVELOPMENT PROGRAM AND INDUSTRIALIZATION PHASE 96-97 1998 1999 2000 2001 2002 2003 2004 DEVELOPMENT INDUSTRIALIZATION AND QUALIFICATION EARLY DELIVERIES