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In pulsed radar and sonar signal processing, an ambiguity function is a two-dimensional function of propagation delay and Doppler frequency, (,).It represents the distortion of a returned pulse due to the receiver matched filter [1] (commonly, but not exclusively, used in pulse compression radar) of the return from a moving target.
Radial velocity aliasing occurs when reflections arrive from reflectors moving fast enough for the Doppler frequency to exceed the pulse repetition frequency (PRF). Frequency ambiguity resolution is required to obtain the true radial velocity when the measurements is made using a system where the following inequality is true.
For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. [3] The total Doppler effect in such cases may therefore result from motion of the source, motion of the observer, motion of the medium, or any combination thereof.
§ 9 Doppler notes that the orbital speed of the Earth (4.7 Meilen/s) is too low (<33 Meilen/s) to result in visually perceptible colour changes. He identifies two factors that may lead to high orbital speeds in a binary star: Central star far heavier than the Sun. According to Doppler stars that are a million times heavier than the Sun are ...
A disadvantage of FDOA is that large amounts of data must be moved between observation points or to a central location to do the cross-correlation that is necessary to estimate the doppler shift. The accuracy of the location estimate is related to the bandwidth of the emitter's signal, the signal-to-noise ratio at each observation point, and ...
Italian Meatball Soup. With lots of mini meatballs plus onion, carrot, cabbage, potatoes, and celery, this soup is pure comfort. Once it's defrosted and reheated, that's when you can sprinkle on ...
Or just as prosthetic limbs can become part of the body, can handwritten notes become part of the mind? Mind-body dualism: Is the mind distinct from the body? Modularity of mind: Is the mind composed of distinct modules, each evolved to solve a specific evolutionary problem from the past? Dynamical neuroscience: Is the mind a dynamical system?
Sarr's shot profile continues to hamper his fantasy value, but as long as he's rebounding and getting stocks, he's worth holding onto. I view Sarr as a long-term play because I doubt we'll see ...