MILES hand grenade

1. A system for determining the distance between a case and a detector wherein:

said case includes:

an RF transmitter of a RF signal when actuated;

an audio transmitter of an audio signal when actuated; and

actuator means for actuating said RF transmitter and said audio transmitter;

said detector includes:

an RF receiver of said RF signal;

an audio receiver of said audio signal;

means for determining the distance from said case to said detector as a function of the time between the receipt of said RF signal and the receipt of said audio signal; and,

means for generating an indication, only when the determined distance is within a reference distance of said detector.

2. The system of claim 1 wherein said case is a simulated explosive device and, said actuator means simulates activation of said device.

3. The system of claim 2 wherein said detector comprising means for actuating said audio receiver in response to reception of the RF signal.

4. The system of claim 3 wherein said detector further comprises means for authenticating receipt of the audio signal transmitted by said audio transmitter.

5. A system for determining the distance between a simulated explosive device and a detector wherein:

said simulated explosive device comprises a case including;

an RF transmitter of a RF signal when actuated;

an audio transmitter of an audio signal when actuated; and

actuator means for actuating said RF transmitter and said audio transmitter;

said detector includes:

an RF receiver of said RF signal;

an audio receiver of said audio signal;

a programmed detector microprocessor including;

means for actuating said audio receiver, only upon receipt of said RF signal by said RF receiver;

means for authenticating the receipt of said audio signal;

means for determining the distance from said explosive device to said detector, as a function of the time between the receipt of said RF signal, and the receipt of said audio signal.

6. The system of claim 5 wherein said detector includes means for generating a first indication and a second indication wherein:

said first indication being generated if the distance from said simulated explosive device to said detector is within a first reference range; and,

said second indication being generated if the distance from said explosive device to said detector is within a second reference range.

7. The system of claim 6 including means for adjusting at least one of said first and second indications by a probability.

8. A system for determining the distance between a simulated hand grenade and a detector, wherein:

said simulated hand grenade comprises a case including;

an RF transmitter of a RF signal when actuated;

an audio transmitter of an audio signal when actuated; and

actuator means for actuating said RF transmitter and said audio transmitter, said actuator means including;

a trigger for generating an electrical signal when said trigger is released;

means for delaying the actuation of said RF transmitter, and said audio transmitter, for a first predetermined time after said electrical signal is generated;

said detector including;

an RF receiver of said RF signal;

an audio receiver of said audio signal; and,

means for determining the distance from said simulated hand grenade to said detector, as a function of the time between the receipt of said RF signal, and the receipt of said audio signal.

9. The system of claim 8 wherein said case includes a programmed case microprocessor, said case microprocessor including said means for delaying the actuation of said RF transmitter and said audio transmitter by the first predetermined time, said RF transmitter and said audio transmitter being actuated substantially simultaneously.

10. The system of claim 9 wherein said case microprocessor includes means for causing at least one re-transmission of said RF signal and said audio signal, said at least one re-transmission, delayed from an initial transmission, by a second predetermined time.

11. The system of claim 9 wherein said case microprocessor includes means for causing said audio transmitter to generate a loud pulse noise simulating the noise of an exploding hand grenade, said pulse noise occurring after said RF and audio signals are transmitted.

12. A system for determining the distance between a simulated directional explosive and a detector, and an angle between the detector and an axis of the directional explosive, the system comprising:

said simulated directional explosive comprising a case, said case including;

an RF transmitter of a RF signal when actuated;

a first audio transmitter of a first audio signal when actuated; and,

actuator means for actuating said RF transmitter, said first audio transmitter, and a second audio transmitter;

said second audio transmitter transmitting a second audio signal when actuated, said second audio transmitter spaced a reference distance from, and operatively connected to, said case;

said detector includes;

an RF receiver of said RF signal;

an audio receiver of said first and second audio signals;

means for determining a first distance from said detector to said first audio transmitter, and a second distance from said detector to said second audio transmitter, as a function of the time between the receipt of said RF signal, and the receipt of said first and second audio signals; and,

means for determining the angle between the detector and the axis of the directional explosive, as a function of said first distance, said second distance, and said reference distance.

13. The system of claim 12 wherein said detector includes means for generating an indication, only when at least one of said first distance and said second distance, is determined to be within a reference range.

14. The system of claim 13 wherein said reference range is a function of said angle between the detector and the axis of the directional explosive.