skzv

9 ms·

61.
by skzv 4y ago
Not just that. It's a higher frequency so the correlation peaks are more narrow and hence more easily distinguishable than L1 frequency
62.
by skzv 4y ago
It has a shorter wavelength so the correlation peaks are more narrow and hence more easily distinguishable. See this illustration [0] taken from this article [1] [0] https://insidegnss-com.exactdn.com/wp-content/uploads
63.
by skzv 4y ago
You may be interested in knowing that Android has exposed raw GNSS measurements through public APIs [0,1] so anybody can build their own raw processing engines using techniques like the ones described in the article [0] https://d
64.
by skzv 4y ago
Google explores these techniques as well. They're critical to improving accuracy in urban areas where you don't have line of sight to satellites (this is why your GNSS (AKA GPS) location is terrible whenever you're in a city)
65.
by skzv 5y ago
Very cool. What are you up to these days? My manager worked at Qualcomm back in the day and played a huge role in creating the first GNSS smartphone chipsets. Likewise, I've learned a lot from him and other veterans in my org.
66.
by skzv 5y ago
Cool! Were you involved in GPS/localization R&D back then?
67.
by skzv 5y ago
It depends on the GNSS chipset in the phone, but usually it'll be all the GNSS satellites visible in the sky, from all major constellations. The current Android platform supports GPS, SBAS, GLONASS, QZSS, BEIDOU, GALILEO, and IRNSS[0].
68.
by skzv 5y ago
I think we're doing all sorts of things now that people decades ago thought were simply impossible!
69.
by skzv 5y ago
We consider and integrate all kinds of solutions, accounting for building geometry is just one of them, and we do thorough validation to ensure it's actually helping. There's always various tradeoffs being made. Ideally, clients w
70.
by skzv 5y ago
That's exactly what's happening! Please see my other comment (along with the contained blog link)
71.
by skzv 5y ago
Yup! This issue, which is commonly described as the "wrong-side-of-the-street" or "wrong-city-block" error, is one of the biggest ones, and is where a lot of the innovation I mentioned is happening today. This occurs bec
72.
by skzv 5y ago
Amazing work. I work on the Android location team at Google, and I sent this article out to my team. GPS/GNSS is critical for accurate location/context, and there's still plenty of innovations happening in this field. One of
73.
by skzv 5y ago
Milton understood externalities and market failure very well. His central message was do not think that market failure means the government has the solution: https://youtu.be/Moc7gwMJabM
74.
by skzv 5y ago
My friend got scammed in a similar way via CashApp. He sold something a few weeks ago and received payment via CashApp. Two days ago he's informed that the customer disputed the charge through his bank, and CashApp is taking the money
75.
by skzv 5y ago
It's probably minus the wire fee, so you can round up.
76.
by skzv 5y ago
What you seem to be describing is the maximum theoretical efficiency. It's a common thing in lots of fields, and it's valuable because it gives you a goal you can aim for, and know that you have reached the theoretical limit of pe
77.
by skzv 5y ago
Telegram already encourages downloading the APK directly: https://telegram.org/android
78.
by skzv 5y ago
One of the biggest issues I have observed is employees who do not use the products they work on. This opinion will probably offend some, but I believe to make a great product you need to be passionate about it, and if you're passionate
79.
by skzv 5y ago
It really hurts your credibility when you mix up distinct Soviet eras. The Gulag system began to be dismantled immediately upon Stalin's death and was fully dismantled by 1960.
80.
by skzv 5y ago
> The problem with prediction markets is that information is not equally distributed amongst participants, and vote "weight" needs to be adjusted based upon proximity to information as well as rational, objective decision-makin
81.
Monte Carlo Options Pricing(blog.skz.dev)
1 points by skzv 5y ago|0 comments
82.
by skzv 5y ago
Resource consumption can increase in other ways. For example, since my refrigerator uses less electricity now, I might buy another computer, or TV, or second refrigerator...
83.
by skzv 5y ago
Regarding poor energy efficiency specifically: it has been observed than gains in efficiency of energy consumption actually cause further increases in energy consumption, rather than decreases, which is counterintuitive: https://
84.
by skzv 5y ago
I remember seeing this on HN years ago - a big inspiration for me.
85.
by skzv 5y ago
Thank you!
86.
Interactive Gradient Descent Demo(blog.skz.dev)
75 points by skzv 5y ago|9 comments
87.
by skzv 5y ago
Telegram has more than 550 million monthly active users... so yeah, lots of us.
88.
Education in the Soviet Union – emphasis on science (1958)(sci-hubtw.hkvisa.net)
3 points by skzv 5y ago|0 comments
89.
by skzv 5y ago
Yet it is so far from rigorous which makes it ripe for abuse. The "extreme" deviations are defined arbitrarily, evidenced by the fact that different offices of the Fed come up with different inflation numbers. Hence the chairman c
90.
by skzv 5y ago
The Fed massages the inflation rate by throwing out "extreme" deviations. > Mr. Powell used a gauge from the Dallas Fed that throws out the top 31% and bottom 24% of personal consumption expenditure (PCE) price changes, and was

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