LaintalAy

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@DullesDick-u6c 5 күн бұрын

Hernandez Betty Rodriguez Donna Brown Matthew

@RolandWebster-l1u 7 күн бұрын

Clark Maria Brown Jason Lopez Linda

@YoungMerle-f6v 14 күн бұрын

Anderson Karen Williams Matthew Anderson Carol

@Rogersllog 21 күн бұрын

Sir, may I have a copy of your lecture slides?

@MdAlom-d4e Ай бұрын

1:17 🎉

@peterramsay Ай бұрын

The second noise, "BIP!", scared my dog.

@foxale08 3 ай бұрын

I've used the fake gps apps to insert the location of a more accurate external gps receiver into my phone.

@abhishekjekte 3 ай бұрын

Very Many Thanks! Cleared many concepts.

@jaredw43 4 ай бұрын

Thank you so much for uploading this. Can't wait to dig in. RIP Professor Enge. 😥

@vestajuno 5 ай бұрын

One of the most clear explanations I found. Excellent work. Thank you very much!

@lin1450 6 ай бұрын

Thank you very much for this series. The professor is amazingly good in explaining these concepts! <3

@dominikchmielewski4912 6 ай бұрын

Awesome aid for my engineering degree thesis. Thank you

@FitFrenzy-i4p 6 ай бұрын

Is there any study material available for the forier analysis of signals

@NN-uf5xt 7 ай бұрын

amazing

@stanellrodriguesguedes4679 7 ай бұрын

sou muito agradecido, obrigado, obrigado, obrigado

@sanketnawale3546 8 ай бұрын

it was awesome but if you could add the working of it also??

@wcottee 8 ай бұрын

How does the receiver "split-the-threads" of the C/A and navigation messages if they are sent at the same time? Does it take advantage of the longer bits in the navigation message? That is, when the navigation sends a "one" is that where the C/A ranging occurs?

@frankvandiggelen4340 9 ай бұрын

The quizzes (with answers) are now available here: drive.google.com/file/d/1AkX1ytw4J-3wBNLOL0FNwTWwLzd0qF7K/view?usp=drive_link The original course was carried on Coursera, and the multiple choice quizzes were embedded in the platform. If you are watching on KZbin you won’t see the answers. So I’ve collected the quizzes and worked-exercises from the course, with answers, in a single doc.

@MorbusCQ 9 ай бұрын

Thanks for uploading

@vishnuvardhan0099 9 ай бұрын

Dear Sir, can you suggest any study material/text book/research papers related to this topic. That would be of huge help. Great lecture by the way

@vishnuvardhan0099 10 ай бұрын

Dear sir, can suggest any learning material to look up on BOC?

@code2compass 4 ай бұрын

there's this book called next generation GNSS signal design by Zhao, I love this book.

@marcteyra9377 10 ай бұрын

Why is there a negative on the right hand side?

@jiachen1119 11 ай бұрын

Very good class. Especially, the analysis for the iq channel.

@JayLikesLasers 11 ай бұрын

How did it get 294 W? If it multiplies the first two, then even at 27.5 W x 10.5 it would still be only 288.75 W.

@coreC.. 11 ай бұрын

The multipath-waves are always received later than the direct line-of-sight wave (because their paths are always a tiny bit longer). Can't that multipath-error be ignored, when you receive an identical/duplicate transmission just a tiny bit later than the straightpath wave? Or is that too simple?.. (edit) Well yeah, perhaps if there is no satellite in direct line-of-sight, and there is only multipath/reflected waves being received.

@coreC.. 11 ай бұрын

Great course. Excellent information. Thank You..

@hiankun Жыл бұрын

6:00 Professor was happy and proud of his cartoon! :-D

@hiankun Жыл бұрын

How cool is that? IT'S SOOOO COOOOL!!

@dadominicanstyl Жыл бұрын

Loved the explanation for pseudo. Awesome lecture.

@dadominicanstyl Жыл бұрын

Awesome presentation. But my favorite satellite system "GLONASS" 😂 I was dying...

@fehmidonmez7810 Жыл бұрын

How does a satellite determine the exact speed of an object on Earth while rotating over a circular path at 14,000 kilometers per hour? Wouldn't it be 1000 times cheaper if they use high-altitude atmospheric balloons or land-based towers? A signal sent by a fridge-sized satellite at 20,200 kilometers away and moving at 14,000 kilometers per hour. I can understand why nobody discusses the ridiculous speeds and altitude of these satellites when calculating radio frequencies; otherwise, it wouldn't make sense.

@coreC.. 11 ай бұрын

I guess it is your personal device (navigation/cellphone) that calculates your own speed. GPS just provides a position (it's in the name). If you are moving in your car, you know your velocity, if you have (at least) 2 positions and the time between aquiring those positions. .. The satellite has a well known orbit. This gentleman explains very well how you can calculate the position of a satellite. It would be difficult to know the exact position of a balloon, floating on the wind. Also, a satellite has a greater range than a balloon. The satellite is 20000 km away, looking down at our planet. A balloon is perhaps at 30+ km altitude (at least a typical waetherballoon pops at just above 30 km altitude). It can not see so much Earth => you would need more balloons than satellites.

@Aleph6 Жыл бұрын

You are a genius!

@sohamkundu8980 Жыл бұрын

Can you please help, in understanding how the 8 is formed?

@cemalialtuntas Жыл бұрын

Thanks for this excellent lecture. This is very helpful to understand the processes in the receiver level.

@cccmmm1234 Жыл бұрын

I think part of the reason for lumping in QZSS with SBAS is that it is regional, not global, therefore does not qualify as a GNSS. Also, no receivers only use QZSS therefore it can be seen as regional augmentation of GPS and others.

@cccmmm1234 Жыл бұрын

The statement that it orbit 1/2:= 1 sidereal day is confusing. That makes it sound like 1 orbit is 2 sidereal days. It is actually 1 orbit period is half a sidereal day.

@cccmmm1234 Жыл бұрын

You might also search first for SVs that are higher in the sky so have lower doppler.

@cccmmm1234 Жыл бұрын

The search animation is a bit off. You would normally search from the centre outwards because the doppler is normally reasonably low. It is o ly high in a fast moving aircraft.

@IamGPSGuy Жыл бұрын

Great series of lectures. Just a typo that the effective radiated power should be 283.5 W and not 294W.

@AugustusTitus Жыл бұрын

It's like Manchester was fed into a BPSK modulator.

@Meldrex5 Жыл бұрын

@laintalay do you have the assignments that went along with the course?

@LaintalAy 9 ай бұрын

Unfortunately not, as those were integrated in the Coursera platform :(

@bugrahan1946 Жыл бұрын

this is so wrong. -128dBm is signal power in 2MHz bandwidth. This value does not represent band density

@ahmednor5806 2 жыл бұрын

🙏🌹

@AndresDiNenno 2 жыл бұрын

My question is how we determine the exact position of an earth station? Which method is actually used? I mean... clearly, we should not use GPS... Do we use stars? How much precise is this?

@MarkVidov 9 ай бұрын

We do use geodetic triangulation. Most accurate method.

@omidpoornasir8187 2 жыл бұрын

Great lectures although it's not clear where the 10, 10.2, 12, or 17 Tx Gain factors come from. Using the formula derived "transmit antenna gain formula" @ 5:36 (2/1-cos(alpha)) the values don't work out to be what was mentioned in the link budget. I"m curious as to how those numbers came to be. At zenith cos(0)=1, making the gain undefined. At alpha =21.3", cos(21.3") = .931. Using the formula 2 / (1-.931) = 28.99 Tx Gain...?

@francescozanini6383 2 жыл бұрын

21:19

@HITESHSHARMA-km2ei 2 жыл бұрын

How long does it take for a GPS signal to reach the earth? Option a- 1/10 b- 1/15 c- 1/20 d- 1/25 Please tell me sir

@markhu3148 Жыл бұрын

QQqQqQqqqQQQqqAAAAA@A@@@@@@@@@@@@@@@@

@ZiglioUK 2 жыл бұрын

You should never pick a sampling rate that is commensurate (meaning a rational multiple) of the chipping rate. That created harmonics in the DLL, something that's common to all tracking loops (look for phase quantisation)

@hubercats 2 жыл бұрын

Awesome presentation! Thank you!

@mpp884 2 жыл бұрын

Thank you!

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