Heartbeat Sensor
The Heartbeat Sensor is a gadget featured throughout the Ryanverse
Rainbow Six
The Heartbeat Sensor makes its first appearance in the novel, Rainbow Six. In the novel, it is deployed by Tim Noonan during Rainbow's assault on Project Alternate in Brazil. It allows Noonan to keep track of his fellow operatives as well as the ecoterrorists, enabling him and John Clark to coordinate the mission effectively.
Tom Clancy's Rainbow Six
The Heartbeat Sensor is a gadget featured in Tom Clancy's Rainbow Six.
The Heartbeat Sensor is capable of tracking human heartbeat even through thick layers of concrete. It works by detecting the characteristic ultra-low-frequency electric field given off by a beating heart. In passive mode it scans a small full circle around the user; when the trigger is pulled it scans a larger cone straight ahead.
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Tom Clancy's The Sum of All Fears
The Heartbeat Sensor is a gadget featured in Tom Clancy's The Sum of All Fears.
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Trivia
- In reality, this technology (detecting the ultra low frequency electromagnetic field given of the human heart) is theoretically impossible to develop for two reasons:
- The receiving antenna on the device would have to have a size of the same order of magnitude as the wavelength of the ULF emitted by the heart (thousands km). Any practical antenna would have extremely low sensitivity and not detect anything due to thermal noise and other factors
- Unless the antenna would be tens of thousand km wide, there would be absolutely no possibility of detecting the direction of arrival of the signal (Abbe diffraction limit law). for the same reason the heart of the person carrying the device would always show up in the system, and the device would not be able to tell the direction of the signal.
- Other technologies (Doppler shift of active radars) are possible, though they would require either a very stable radar platform or very advanced processing. The radar waves would also appear to anyone with a receiver.