Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees. It contrasts with the modern stationary target indication (STI) technique, which uses details of the signal to directly determine the mechanical properties of the reflecting objects and thereby find targets whether they are moving or not. Early MTI systems generally used an acoustic delay line to store a single pulse of the received signal for exactly the time between broadcasts (the pulse repetition frequency). This stored pulse will be sent to the display along with the next received pulse. The result was that the signal from any objects that did not move mixed with the stored signal and became muted out. Only signals that changed, because they moved, remained on the display. These were subject to a wide variety of noise effects that made them useful only for strong signals, generally for aircraft or ship detection. The introduction of phase-coherent klystron transmitters, as opposed to the incoherent cavity magnetron used on earlier radars, led to the introduction of a new MTI technique. In these systems, the signal was not fed directly to the display, but first fed into a phase detector. Stationary objects did not change the phase from pulse to pulse, but moving objects did. By storing the phase signal, instead of the original analog signal, or video, and comparing the stored and current signal for changes in phase, the moving targets are revealed. This technique is far more resistant to noise, and can easily be tuned to select different velocity thresholds to filter out different types of motion. Phase coherent signals also allowed for the direct measurement of velocity via the Doppler shift of a single received signal. This can be fed into a bandpass filter to filter out any part of the return signal that does not show a frequency shift, thereby directly extracting the moving targets. This became common in the 1970s and especially the 1980s. Modern radars generally perform all of these MTI techniques as part of a wider suite of signal processing being carried out by digital signal processors. MTI may be specialized in terms of the type of clutter and environment: airborne MTI (AMTI), ground MTI (GMTI), etc., or may be combined mode: stationary and moving target indication (SMTI). (Wikipedia).
Determine when a particle is moving down from a position graph
Keywords 👉 Learn how to solve particle motion problems. Particle motion problems are usually modeled using functions. Now, when the function modeling the position of the particle is given with respect to the time, we find the speed function of the particle by differentiating the function
From playlist Particle Motion Problems
Two Dimensional Motion (2 of 4) Worked Example
For projectile motion shows how to determine the maximum height, the time in the air and the distance traveled for an object that is projected with a known initial velocity at a known angle above the horizon. You can see a listing of all my videos at my website, http://www.stepbystepscien
From playlist Mechanics
How to determine when a particle is moving to the left and right
Keywords 👉 Learn how to solve particle motion problems. Particle motion problems are usually modeled using functions. Now, when the function modeling the position of the particle is given with respect to the time, we find the speed function of the particle by differentiating the function
From playlist Particle Motion Problems
Find the reference angle of a angle larger than 2pi
👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
Learning to find the reference angle by using coterminal angle
👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
Learn how to determine the reference angle of an angle in terms of pi
👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
A brief overview of navigation, coordinate systems, and sensors. Using the timekeepers we discussed in the previous videos, we can determine where we are. When describing locations, we can use Cartesian, Clyindrical, or Spherical coordinate systems. Sensors such as GPS, IR, and RADAR use t
From playlist SciJoy Uploads
Describes what acceleration is in physics, how to calculate acceleration and how to determine if an object is speeding up, slowing down or moving at a constant velocity based on the direction of it velocity and acceleration vectors You can see a listing of all my videos at my website, http
From playlist Motion Graphs; Position and Velocity vs. Time
How to find the reference angle of an angle larger than 2pi
👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
Vintage 1962: RADAR Applications: Tracking, Communication Technology (Training CRT SAGE Electronics)
Full, unedited documentary on RADAR Applications from 1962. This 40 minute training film provides excellent background and technical description of the invention and evolution of RADAR technologies. From its earliest use in wartime, to cold war installations integrated with the giant SAG
From playlist Airlines, Airports, Automated Ticket Reservation Systems
From playlist CS294-112 Deep Reinforcement Learning Sp17
Christian P. Robert: Bayesian computational methods
Abstract: This is a short introduction to the many directions of current research in Bayesian computational statistics, from accelerating MCMC algorithms, to using partly deterministic Markov processes like the bouncy particle and the zigzag samplers, to approximating the target or the pro
From playlist Probability and Statistics
Distinguished Visitor Lecture Series by Mark van der Laan Targeted Learning with Applications to ..
Distinguished Visitor Lecture Series Targeted Learning with Applications to Genomic Studies Mark van der Laan University of California, Berkeley, USA
From playlist Distinguished Visitors Lecture Series
How Small Is It - 04 - Elementary Particles (4K)
Text - http://howfarawayisit.com/wp-content/uploads/2021/08/Elemetary-Particles-2021.pdf Music free version - https://www.youtube.com/watch?v=3y0VkM3onjM&list=PLpH1IDQEoE8TD269udtDqiKF94_eUPNMP website - https://howfarawayisit.com Wiki page https://howfarawayisit.fandom.com/wiki/Encycloped
From playlist How Small Is It
Machine Learning using Boosting Regression in JASP free software | Supervised learning
In this video, I will demonstrate how to boosting regression which is a machine learning technique. I discuss fit and output and show how to interpret them. Useful links: Jasp: https://jasp-stats.org/download/ Regression: https://www.youtube.com/watch?v=3sQnO02f8Z0&list=UUfu2GCdjq50W-k
From playlist Machine Learning
Christian Robert : Markov Chain Monte Carlo Methods - Part 1
Abstract: In this short course, we recall the basics of Markov chain Monte Carlo (Gibbs & Metropolis sampelrs) along with the most recent developments like Hamiltonian Monte Carlo, Rao-Blackwellisation, divide & conquer strategies, pseudo-marginal and other noisy versions. We also cover t
From playlist Probability and Statistics
Collen: Tracking Global Biodiversity Change in Space and Time
Ben Collen explains the ways biodiversity loss has been monitored and discusses novel approaches.
From playlist Spatial Biodiversity Science and Conservation
Binary search in 4 minutes. Code: https://github.com/msambol/youtube/blob/master/search/binary_search.py Sources: 1. https://www.amazon.com/Introduction-Algorithms-3rd-MIT-Press/dp/0262033844 2. https://en.wikipedia.org/wiki/Binary_search_algorithm LinkedIn: https://www.linkedin.com/in/
From playlist Search Algos // Michael Sambol
Sketch the angle then find the reference angle
👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant
From playlist Find the Reference Angle
Analyzing Public Data with Wolfram: UN Sustainable Development Goals
To learn more about Wolfram Technology Conference, please visit: https://www.wolfram.com/events/technology-conference/ Speaker: Maureen Baehr & Ben Kickert Wolfram developers and colleagues discussed the latest in innovative technologies for cloud computing, interactive deployment, mobil
From playlist Wolfram Technology Conference 2018