Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. Before the invention and practical implementation of the proximity fuze anti-aircraft fire was inaccurate and relied on throwing up a wall. A view of the sky above Pearl Harbor, Hawaii, filled with smoke and anti-aircraft fire on Dec. The transmitter frequency is modulated at an intermediate frequency. The National Defense Research Committee, Johns Hopkins Applied Physics Laboratory and the 'funny fuze'. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy.
![proximity fuze proximity fuze](https://www.mil-spec-industries.com/sites/mil-spec-industries.com/files/M174-PROXIMITY%20FUZE.jpg)
![proximity fuze proximity fuze](https://i.ytimg.com/vi/xHFgbtYaf7g/hqdefault.jpg)
A fuze is a device that initiates an explosive function in a munition, most commonly causing it to detonate or release its contents, when its.
![proximity fuze proximity fuze](https://cartridgecollectors.org/images/introduction-to-artillery-shells-and-shell-casings/electimefuze.jpg)
Abstract: A proximity fuze for use in a tube launched projectile carrying a payload, comprising an oscillator for generating a radio frequency signal which has a varying frequency, a single antenna for transmitting the radio frequency signal and for receiving an echo of the radio frequency signal, a first signal processor for generating a range signal corresponding to the time delay between the transmission of the radio frequency signal and the receipt of the echo signal, second signal processor for comparing the range signal with a reference signal and depending on the result of the comparison generating an activation signal for activating the payload, wherein a directional coupler is used for coupling the radio frequency signal from the oscillator to the antenna and to the signal processor and for coupling the echo signal from the antenna to the signal processor, and wherein the second signal processor comprises a threshold detector, a peak detector and a comparator, the threshold detector being for allowing the compĪbstract: A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. An artillery fuze or fuse is the type of munition fuze used with artillery munitions, typically projectiles fired by guns (field, anti-aircraft, coast and naval), howitzers and mortars.