1970

DOI: 10.1109/proc.1970.7600

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Exact threshold location in analog FM systems

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Wireless Setup For the Dynamic Measurement Of Blast Pressure1

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“…Moreover, the lowest RF power

P_{{R X}_{M I N}}

required at the ADC input, called the sensitivity of the ADC, depends on the minimum carrier‐to‐noise power ratio

{C N R}_{M I N}

required for ensuring the FM demodulation.

{C N R}_{M I N}

is found to be about 10, whatever the modulation rate [17]:

true {C N R}_{M I N} = \frac{P_{{R X}_{M I N}}}{P_{N O I S E}} ≅ 10

…”

Section: Wireless Setup For the Dynamic Measurement Of Blast Pressurementioning

confidence: 94%

Wireless Transmission of Friedlander‐Type Signals for the Dynamic Measurement of Blast Pressure

¹

,

²

,

³

et al. 2021

Propellants Explo Pyrotec

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During explosive detonation or air blast experiments, long cables are commonly used for transmitting signals delivered by pressure sensors to the safe place of the acquisition unit. While constant efforts are undertaken for enlarging the bandwidth of sensors in order to improve the measurement precision of the peak pressure, the limitations of the wired transmission of blast pressure signals delivered by these sensors are not addressed. We discuss here such limitations and propose a wireless new solution for the dynamic measurement of Friedlander‐type signals delivered by ultra‐wideband sensors (>10MHz ). Contrary to the wired solution, the distance between the sensor and the acquisition unit does not limit the measurement bandwidth of the wireless setup. Experimental results are reported for validation purposes and pave the way of the dynamic measurement of blast pressure variations occurring at the heart of the fireball generated during explosions.

“…Moreover, the lowest RF power

P_{{R X}_{M I N}}

required at the ADC input, called the sensitivity of the ADC, depends on the minimum carrier‐to‐noise power ratio

{C N R}_{M I N}

required for ensuring the FM demodulation.

{C N R}_{M I N}

is found to be about 10, whatever the modulation rate [17]:

true {C N R}_{M I N} = \frac{P_{{R X}_{M I N}}}{P_{N O I S E}} ≅ 10

…”

Section: Wireless Setup For the Dynamic Measurement Of Blast Pressurementioning

confidence: 94%

Wireless Transmission of Friedlander‐Type Signals for the Dynamic Measurement of Blast Pressure

¹

,

²

,

³

et al. 2021

Propellants Explo Pyrotec

View full text Add to dashboard Cite

During explosive detonation or air blast experiments, long cables are commonly used for transmitting signals delivered by pressure sensors to the safe place of the acquisition unit. While constant efforts are undertaken for enlarging the bandwidth of sensors in order to improve the measurement precision of the peak pressure, the limitations of the wired transmission of blast pressure signals delivered by these sensors are not addressed. We discuss here such limitations and propose a wireless new solution for the dynamic measurement of Friedlander‐type signals delivered by ultra‐wideband sensors (>10MHz ). Contrary to the wired solution, the distance between the sensor and the acquisition unit does not limit the measurement bandwidth of the wireless setup. Experimental results are reported for validation purposes and pave the way of the dynamic measurement of blast pressure variations occurring at the heart of the fireball generated during explosions.

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