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Articles related to "position"


Detecting and Geolocating Jammers and Spoofers

  • If there are three or more stations, the combination of two or more detected TDOA measurements can be used to geo-localize the jammer position.
  • The most recent progress has been made by Yin et alia where AOA and TDOA are combined for geo-localization in closed form but that method is unable to cope with incomplete information; hence one missing AOA measurement from station i, for example, will result in the complete loss of all TDOA measurements involving station i.
  • For a fair comparison, it is important to assume appropriate measurement standard deviations that are realistic for both the AOA and TDOA systems in a convex region formed by three stations.
  • Figure 3 is produced by sorting the source’s position indices according to the CRLB of joint AOA/TDOA geo-localization and superimposing its corresponding AOA-only CRLB and TDOA-only CRLB.

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Could an Astronaut Lost in Space Use Gravity to Get Around?

  • As part of my introductory physics course, students have to create a numerical calculation to solve a problem.
  • His approach was smart: He first calculated how long it would take if the spaceship was moving at a constant velocity.
  • (Here’s the code.) I'm going to pick a time interval of 100 seconds and let stuff update until the center of the astronaut and rock are 0.5 meters apart—as a rough approximation of when they’ll make surface contact.
  • Maybe my time interval of 100 seconds was too long, which would cause my estimate to be off.
  • With that, I know that it's not going to take 100 years or 100 seconds to reach that asteroid.
  • And since you’ve got some free time as you drift toward your destination, you could refine that first estimate by breaking the problem down into five time intervals with a length of 10,000 seconds.

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Vim cheatsheet to move around in a file (plus tips to use them)

  • Being able to freely move around in a file is an indispensable vim skill.
  • Below is a list of the commands I use to move around in a file.
  • I will also share some tips to move around efficiently and how you can start applying it.
  • Btw, you can see how many lines in a file with CTRL-G.
  • When moving around in Vim, it is important to see patterns inside a file.
  • Moving in vim reminds me of painting, start with the broadest stroke you know.
  • Start by "find z" (fz) because "z" is not a commonly used letter then backtrack with b.
  • The last thing we want to do it pressing a lot of l's.
  • This is what makes vim fun!
  • These 10 should put you in a really good position to move around in a file.Then slowly add more to your arsenal.

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18 players to start or sit in fantasy football for Week 7

  • As always, we try to pick less-obvious choices — players fantasy owners might be on the cusp of starting or sitting.
  • It's always possible he finds the end zone, but the Titans' 10th-ranked rushing defense, at home, isn't necessarily the matchup to target.
  • Why you should start him: Our start/sit columns have featured more Frank Gore than we would have guessed, but he's a fantasy-relevant player this year, and that remains the case this week.
  • Anderson is too volatile to rely on, though his big-play ability has the chance to bite fantasy owners who sit him.
  • Why you should sit him: Jones is the clear No. 2 receiver in the Lions offense, and while he's had productive fantasy weeks, he's topped 80 yards just once (and his lone touchdown came in that same game).

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This is the weekly government report all traders should be watching

  • Through the Commitment of Traders (COT) report, they it offers traders insight into where certain types of traders are positioned in the commodity markets.
  • Those trading stocks could only dream of having information on which groups of traders were long or short a stock.
  • For example, a trend trader might look to "go with the flow" regarding the beginning signs of speculators piling into a certain commodity, whereas, countertrend traders might look for signs of overheated markets ripe for a mean reversion trade in the opposite direction of the trend.
  • We have noticed that markets swing like pendulums and as a commodity is peaking there tends to be an abnormally large long position held by large speculators in that contract.
  • We have noticed the large speculator group in the COT report have amassed a near-record net long position in gold futures traded on the COMEX division of the CME Group.

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