One of the greatest advantages of utilizing pulse wave Doppler is its ability to accurately measure blood flow velocity at a specific location within the blood vessel. This provides detailed information on the timing and direction of blood flow, helping in the diagnosis of various cardiovascular conditions.
If you have an increased pulse rate it means that you are exercising you heart more often meaning that you have a chance of living longer because your heart is stronger but if you over work your heart then you will risk heart failure (if you have a weak heart)!
Early radar used radio interference to detect movement in the air of objects that would shift the appearance of the received waves. The directional high frequency radar was invented by the British. It sent out a large pulse of energy and timed its return to the receiver. That time divided by two was the distance to the object. Doppler radar sends out pulses of radio waves and measures their phase relationship to watch an objects motion and density in detail.
To calculate the time for one pulse in a drive system, you need to know the pulse frequency or pulse rate of the drive. The time per pulse is the inverse of the pulse frequency. For example, if the pulse frequency is 100 Hz, the time for one pulse would be 1/100 = 0.01 seconds, or 10 milliseconds.
The motion of a pulse with respect to the source depends on the relative motion between them. If the source and pulse are both stationary, the pulse moves away from the source at a constant speed. If the source is moving towards the pulse, the pulse will appear compressed, while if the source is moving away, the pulse will appear stretched.
The pulse repetition period is the inverse of the pulse repetition frequency. Therefore, if the pulse repetition frequency is 1 kHz, the pulse repetition period would be 1 millisecond (1/1000 seconds).
Alternating PD (Pulse-Doppler) is a radar technique that alternates between transmitting radar pulses and listening for return signals. This method helps to distinguish between moving and stationary targets by utilizing the Doppler effect to detect relative motion. Alternating PD is commonly used in modern radar systems to improve target detection and tracking capabilities.
The pedal and popliteal pulse can be assessed using a Doppler ultrasound device, specifically a handheld Doppler ultrasound. This device allows for the measurement of blood flow in peripheral arteries, enabling the evaluation of circulation in the legs and feet. It is particularly useful in detecting conditions like peripheral artery disease.
The carotid pulse is typically considered to have the greatest amplitude or tension when palpating different pulse points on the body. This pulse is able to be felt more easily due to its proximity to the heart and larger blood vessels.
produces extremely straight and even welds
For the perfect evaluation of heart beat.
1)antenna scanning modulation is time oriented 2)internal modulation of clutter3)system instability
If a doctor and Doppler test cannot find a pulse on the top of the foot, it may indicate a blockage or restriction in blood flow to that area. This could be due to conditions such as peripheral artery disease or atherosclerosis, which may require further evaluation and treatment. It is important to follow up with your healthcare provider for a comprehensive assessment and appropriate management.
Pulse is measured as the number of times a heart beats per minute.
The longer you time for the more accurate your measurement will be
The common carotid artery - because it's closest to the heart.
Radar Ranging is an Activity of a RADAR system to measure range of a particular object from the RADAR's own location the object can be aircrafts, ships or other objects like buildings. Usually Ranging is done by means of transmitting a pulse and receive echoes from it where the range is measured from time differences(or Delay) between departure and arrival of pulse , this ranging method is called as "Pulse Delay Ranging" Other ranging method is Doppler based ranging where range is measured by means of Doppler effect EDIT- it seems i need to re-construct the answer
Doppler radar is sensitive to the changes in frequency of the returned signal caused by the movement of the "target" off which that signal is being reflected. Storm cells are moving concentrations of extremely humid air, and they reflect radar signals fairly well. By using a computer to analyze the small changes in the frequency of the returned signal (compared to the frequency of the transmitted signal - which we know), we can, by looking at this Doppler shift, paint a picture of the storm cell activity. A link is provided to the Wikipedia article on Doppler radar. You can get more detailed information there. The above is correct but is worth noting the following too: Doppler RADAR will be able to detect Doppler shift, but the fidelity to which they detectable or are know to is a function of the Pulse Repetition Ration (PRF) and the number of sample collected. So it depend what frequency you are looking and the fidelity you are looking for. Also note that Doppler is a function of the Carrier Frequency not the pulse modulation, and it should be noted that that some carrier frequencies are more susceptible to water and air molecule resonate then others. Finally the choice of wavelength and polarisation are fundamental to match what your are looking to see.