Tracking Definition and 120 Threads

Homework Statement For the parts of the Trebuchet shown, develop expressions for the position, velocity, and acceleration, x, x', and x'' of the payload as a function of the arm angle θ and its derivatives θ', θ''. Use the vector tools in Mathematica to help develop the expressions...

I was looking through some recent catalogs from electronic stores and a new thing they are trying to hitch is the GPS car tracking devices. There is a major flaw in the system for anonymity, you have to register with a " air time" service to add tracking days and such. For 139 dollars I was...

A recent abstract discusses the first report ever of the remission of an autoimmune disease from which I suffer, ankylosing spondylitis. As a layman without access to subscriptions to professional journals, I was wondering if there might be any posters who are aware of the best internet sites...

Homework Statement I am attempting to modify an original set of code which uses a spline interpolator to plot a curve representing cumulative emissions (and its derivative annual emissions). The goal is to read in the historical emissions (from histem.txt) and then track the cumulative...

Hi all. I have a question. Is there a way to calculate the altitude and azimuth of a star at a given time using as an input the altitude and azimuth of that star at an earlier time, without having to convert those coordinates to RA and DEC? The problem is that I want to calculate the position...

I need to track Distance on one Axis with an Accelerometer for a rocket project (i know there are bettor ways t do this but i am dead set on this one) I was thinking as follows, Read Accelerometer Accelerometer*Δt=Δv Current speed+Δv=New speed distance+New speed*Δt=New distance

Homework Statement Hi guys I want to know how to plot time responce for optimal tracking problem. I have the following information state equation dx = AX+Bu Y =Cx want to track a comand z= [z1;z2] constant I know that we need to find the feedback gain by sys= ss(A,B,C,D) [K,S,E] = lqr(sys,Q,R)...

Simple continuous tracking radar system with cantenna We are in need of a simple radar target tracking signal processing method. It's to be very short range, less than 5 meters. It needs to track a single target that can be moving or stationary at any time. We are using 2.4 GHz ISM band...

I am trying to understand steady state tracking error. I was looking over one of the example problems in my textbook and this is what it said: G(s) = (-1)/(100(s^2-10.791)) D(s) = K(s+5)/(s+10) Td(s) = 1/s as it states above I don't understand how they got the value 3300... I got 2156 when...

Today marked a big win for privacy advocates. *The U.S. Supreme Court handed down a ruling on the question of whether it was Constitutional for police to attach a GPS tracking unit to someone’s vehicle without their consent, and without … Continue reading...

tri axial accelerometer Hi, I'm doing a project to do with measuring velocity of an athlete. I'm looking into using a wireless tri axial accelerometer. I can't seem to find enough detailed information into how it works. Could you please help!

I realize I’ve become one of those bloggers who goes for days weeks at a time with no updates. *I have no excuse. *I’m working on a new post that should be up in a few days. *In the mean … http://virtualnavigator.wordpress.com/2011/10/17/facebook-sued-over-off-line-tracking/"...

A particle moves along the x-axis according to the equation: x = 1.92 + 3.09t − 1.00t2, Where x is in meters and t is in seconds? a) find the position of the particle at t=3.4s -I get this part. (0.866m)...

Homework Statement Homework Equations The Attempt at a Solution But the correct answer is 1227 ft/s^2. Thanks.

Homework Statement You're tracking a plane from the ground. The plane is at a constant height h from the ground, at a distance r from you at the illustrated instant, and at an inclination theta. The plane's speed is constant at 1200km/hr. Find the rate at which your tracking dish must rotate...

THIS WAS RESOLVED Homework Statement In a problem I had to create a animation of the function sin(x-a) were a ranged from 0 to 8pi x=[-2*pi:.00001*pi:2*pi]; a=0; y=sin(x-a); g=plot(x,y); grid on; title('sin(x-0)') set(g,'EraseMode','xor') while a<=8*pi a=a+.1*pi; y=sin(x-a)...

Hi, Is it possible to set up a double slit experiment where the numbers of particles being emitted can be counted and see if it is equal to the numbers detected at the screen? The particles should be Buckyball or other molecules where the energy can be made large compared to single...

"Tracking" alive and well in community colleges? I just want to pass on a blog that was passed on to me. It details some of the changes that have been going on in the community colleges of Chicago. These changes may be seen elsewhere, as well. I'm not sure that these changes are beneficial for...

The path of photons can be (almost) reconstructed in a double slit experiment! Observing the Average Trajectories of Single Photons in a Two-Slit Interferometer http://www.sciencemag.org/content/332/6034/1170.abstract Discussion: http://physicsworld.com/cws/article/news/46193...

So today I practiced 8fps (frames per second) tracking on a local greylag geese colony. Then you get this: I guess from the shift in the background you could estimate the take off speed of this formation flight. The total series is 12 frames in RAW + small jpg then the buffer was full...

Hi friends! I have recently started a small project where I had hoped to build a simple sun tracker. My initial plan involved 2 Photovoltaic cells mounted at either end of a panel which was attached to a shaft which was then attached to a small DC motor. Both cells were hooked to the motor...

Relative Motion-- Airplane vs radar station and tracking the displacement In Figure 4-49, a radar station detects an airplane approaching directly from the east. At first observation, the airplane is at distance d1 = 340 m from the station and at angle θ1 = 34° above the horizon. The airplane...

Hey... short question. I was wondering if anyone has any idea of what units to use in this equation for momentum resolution?... \(\left|\frac{\sigma(p)}{p}\right| = \sqrt{A_N}\frac{\epsilon}{L^2}\frac{p}{0.3B}\) where \(A_N=\frac{720}{N+5}\) Where N is the number of measurements made...

Hi, I'm looking to do random, silly stuff with the Coriolis effect, mainly just confirming what theory predicts, using a simple rotating turntable. My hope in doing that was to use a typical, average consumer camera, film the motion in question from above, with markers for frames of...

http://inetcore.com/project/ipv4ec/index_en.html Less than 950k addresses available at the moment.

Hi all, I am new to this forum. My question is, what is the best and most affordable small tracking device? Some kind of small gadget that can be used to track position in real time. the reason i am asking, is because i recently had my "trail cam" stolen. (a trail cam is a motion sensitive...

Heya Not motion detection - I need something that can track a specific object; ideally locate where on the screen it's situated, and even more ideally, be able to tilt and pan without losing track of the object. This is for a ballistics project, I'm planning on using two webcams in tandem...

I am trying to come up with a design that would track the position of a wire. The wire will have a permanent magnet attached to its tip. I will use a electromagnet to move the wire in only 1 dimension. Here is what I was thinking... I would put a stationary aluminum plate some distance from...

This problem is a sample flight path of a ship in space. Its path is described by the line r(t) = (-1+t)i + (2-t)j An asteroid has the starting point (0, 5, -1) and a heading vector of 2i + j + 3k Ship x = -1 + t j = 2 -t z = 0 asteroid x = 0 + 2t y = 5 + t z = -1 + 3t The...

Been sick for a bit so missed a fair bit of "advanced" maths including locuses, particularly parabolas, but what's worrying me more at the moment is dynamics. So got a moderately difficult question here to help catch me up. I don't really comprehend any of the rules and this question is tricky...

I'm having a little trouble using the Latex thing so I've only used it for some of the equations. Homework Statement Elevation control of a tracking antenna. Equation of motion for the system J\theta^{..}+B\theta^{.} = Tc+w ... Equation 1 (those dots are meant to be above the thetas, but I...

A ball of mass m at rest at the coordinate origin exploded into three equal pieces. At a certain instant, one piece is on the x-axis at x=40cm, and another is at x=20cm, y=-60cm. where is the third piece at that instant I don't have an idea how to solve it I tried many time but I don't...

Purpose of tracking detectors with "stereo design" HERA-B used silicon microstrip detectors for their vertex detector. Behind each two sided detector with strips in x- and y direction, a second identical detector was placed, rotated by 5 degrees. LHCb uses a similar design for the phi-detector...

An electron with speed of v0=1.94 x 107 m/s is traveling parallel to an electric field of magnitude E= 1.47 × 104 N/C. How far will the electron travel before it stops? How much time will elapse before it returns to its starting point?

http://www.newscientist.com/article/mg20427385.800-smart-cctv-learns-to-spot-suspicious-types.html I was going to title this post "Behavioral Algorithms-Not just for dating anymore!" But seriously, while I am always for the advancement of knowledge, does anyone else find these applications...

Hello all, I'm working on coding a program that tracks photons based on Compton Scattering. However, I'm having an issue on how to deal with photons with multiple scatters. So, phi (polar) and theta (azimuthal) range from 0-pi/2 and 0-2pi, respectively, based on a random number generator...

Hi, I'm looking to design and build two circuits for devices that will alert the two holders of the devices when they come within 1m of each other (I only need 1m range for demonstrations of the devices – in practice, the range will be more like 100m). Now I'm pretty sure Bluetooth...

Homework Statement A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 3.0 m, y = 6.0 m, and has velocity v = 1.0 m/s i-hat + 7.0 m/s j-hat. The acceleration is given by the vector a = 9.0 m/s^2 i-hat + -1 m/s^2 j-hat. What is the velocity...

The latest report indicates that banks and others have paid back something around 85 billion, with over 4 billion in profits for us taxpayers [one report said 6 billion in profits]. http://www.nytimes.com/2009/08/31/business/economy/31taxpayer.html Apparently there was something around 125...

On average, who has the advantage - a fugitive or his pursuer?

Hi guys, i stumble across this forum searching for a way to tag an object in a recorder video and track it as it goes. Can i check is this possible to do ? for example i had a video of my 2 dogs playing fetch. is it possible to tag both my dogs and the stick and track them throughout...

What exactly is a "tracking cookie"? Almost every time I'm done surfing the web, and I do a virus scan once per day, I get a "tracking cookie". My firewall never really seems to block them either, (norton antivirus 09) Are tracking cookies really harmful to your computer? It say's that they...

A baseball is hit deep to center field. The vertical position from home plate of the ball with respect to time is described by: v(t) = -20t2 + 103.5t +5 in feet above home plate The horizontal distance from home plate is described by: h(t) = 84.32t in feet where t is in seconds HINT: The...

I am completely lost. I am taking a course in Space Systems Engineering for Career Advancment. I have been asked to predict (without a program/software) when I will be able to see a satelite from a given lat, long from earth. I know the altitude is 350KM and I also know the inclination...

Some people talk as if they think the social statistics of science don't matter, but it's hard for me to believe they really think that. Stats on public perceptions and interest in science, and also stats on research publication, citations, faculty hiring etc., must sometimes be important to...

I am working on a robot which moves by tracking white lines. I am stuck at making a logic for making correction to robot incase it goes a little astray. How many sensors atleast will I need and where they should be placed assuming that the base of the robot is square or rectangular. My idea was...

I'm interested in determining the trajectory and spin of a ping-pong ball for a project for class. I plan on getting a decent resolution video camera and record the ball (with the camera stationary). Afterward, I'll analyze the video on my computer. My question is: what kind of algorithm can I...

Hi everyone! I wanted to share my final year electronics project on PIC-Microcontroller. It is a simple light tracking device. The project theme to demonstrate the working of a Sun tracker using a PIC micro controller. The sun tracker solar panel has a controller interface that can adjust...

Greetings, Very simple question for you guys. Suppose I wanted to track my location accurately with no real reference points. And what I mean by that is if take some arbitrary location I'm currently at to be point 0,0 on a 2-dimensional map, is it possible to use only accelerometers to track...

Does anyone know of a very small tracking device or tag that can be tracked .5 mile or more and the size of watch battery or smaller. I looking for such a device for dog tracking.