Coverage of ultra wide band sensor?
Answer:
What frequency? That is going to determine range. What power level? What sensor? What are you using this for? Which parts make up your sensor? Is this laiser or RF sensor?
Not knowing any of that I would say your sensor will work to 100 ft.
UWB signals have been used for decades in Ground-Penetrating Radar (GPR) applications. When UWB signals are employed in a GPR system the sensor is moved in order to detect and map underground stationary objects. When used in security devices, the sensor is stationary and easily detects motion.
UWB signals are generally defined as electromagnetic transmitters whose bandwidth is at least 25% of the nominal center frequency. UWB operates in the time domain, almost all other transmitters operate in the frequency domain.
GPR instruments are moved across a surface and transmit very short bursts of electromagnetic energy into the ground. Reflections from buried targets or subsurface anomalies (fixed objects) are received at another antenna. This technology can detect targets such as plastic pipes and voids underground, and even targets inside walls and floors. Any change in dielectric property of materials will cause a reflection. Echoes from targets will arrive at different times depending on their distance from the antenna (and will also vary depending on the type of material through which the signal passes).
Security devices using ultra wideband transmit and receive signals passing through the air and building materials. Unlike GPR, the sensor is stationary and it detects moving objects. As with GPR, the approximate distance of the object causing the reflected signal can be determined by the particular time delay in the signal return. The monitored area may approximate a sphere with a diameter as large as 60 feet. There may be concrete walls or other structures and obstacles in the detection pattern that ultra wideband signals easily penetrate. Although extremely effective, ultra wideband sensors can be powered over the Ethernet and Total average power is transmitted is just ~1% of a cell phone.
The key reason for using a UWB signal instead of a single frequency transmitter (like microwave and passive infrared) is improved motion resolution, distance measurement and obstacle penetration.
Source:http://www.expert-insights.com/report.as...
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: