Tech
New algorithm enhances Doppler resolution of unmanned vehicle radars
A research team has developed an extrapolation-based Doppler resolution enhancement algorithm for frequency modulated continuous wave radars. The algorithm improves system performance, offering an advancement that is superior to existing ultra-high-resolution technologies.
The findings are published in the Journal of Electrical Engineering & Technology. The team was led by Sang-dong Kim and Bong-seok Kim, affiliated with the DGIST Division of Mobility Technology, in collaboration with a team led by Professor Youngdoo Choi, affiliated with the Republic of Korea Naval Academy (ROKNA).
Improving radar accuracy without extra hardware
This research introduces a technology that improves radar detection accuracy without the need for additional complex computations or hardware. The technology is expected to contribute to enhancing radar system performance on various intelligent unmanned platforms such as unmanned aerial vehicles (UAVs), unmanned ships, and autonomous vehicles.
Conventional radar systems analyze the Doppler effect to determine the velocity of a target, but the fast Fourier transform (FFT)-based approach has limitations regarding resolution (i.e., the accuracy of velocity discrimination). To address this, the joint DGIST–ROKNA research team applied a signal extrapolation technique and has proposed a new algorithm that enhances Doppler resolution without extending observation time.
Performance gains and real-world applications
The proposed method successfully reduces the root mean square error of velocity estimation by up to 33% and decreases the target miss rate by up to 68%, representing a substantial improvement over the conventional approach. Notably, the proposed method maintains the same computational complexity level as the conventional FFT method, thereby simultaneously achieving fast processing speed and high efficiency.
This technology can effectively solve the problem of signal overlap between targets moving at similar velocities, particularly when UAVs or radar systems detect multiple objects simultaneously. It can therefore greatly enhance the ability to distinguish closely spaced targets and improve detection accuracy, marking a new milestone in the advancement of high-resolution target detection technology.
Additionally, the technology is highly regarded for its industrial applicability because it requires no additional hardware resources and features a simple computational structure that enables real-time implementation.
Sang-dong Kim, principal researcher at the Division of Mobility Technology (concurrently serving the interdisciplinary engineering major), said, “This study demonstrates an improvement in both the efficiency and precision of radar signal processing, enabling more accurate target detection without the need for additional equipment. It is expected to evolve into a key technology for defense, autonomous driving, and unmanned systems.”
More information:
Youngdoo Choi et al, Doppler Resolution Enhancement Algorithm Based on Extrapolation for FMCW Radar, Journal of Electrical Engineering & Technology (2025). DOI: 10.1007/s42835-025-02453-6
Citation:
New algorithm enhances Doppler resolution of unmanned vehicle radars (2025, November 11)
retrieved 11 November 2025
from https://techxplore.com/news/2025-11-algorithm-doppler-resolution-unmanned-vehicle.html
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Tech
‘Uncanny Valley’: Iran’s Threats on US Tech, Trump’s Plans for Midterms, and Polymarket’s Pop-up Flop
Kate Knibbs: So, you went twice?
Makena Kelly: Yes, Kate. I went twice.
Kate Knibbs: I missed that.
Zoë Schiffer: Wait, is the Pentagon Pizza thing a joke about the pizza predicting the war?
Makena Kelly: Yeah.
Zoë Schiffer: Oh, my God.
Makena Kelly: Because they had these Pentagon pizza trackers up. When I returned the second night, yes, I came back the second night. Everything was working for the most part. There were still some screens that were turned off, but I never saw any actual Bloomberg terminals. There were some monitory Bloomberg type terminal things that it looked like Polymarket had developed themselves, but the real $50,000 Bloomberg terminal was nowhere to be found. And yeah, the second night, again, it was mostly people looking to gawk at the event, except I did find a couple of people who placed some bets on platforms like Polymarket and Kalshi. One was named William, and he said he was a member of the military, wouldn’t give me his full name. And he last year got involved in this for the first time by putting in, I think, all of his tax return into Oklahoma City sports betting.
Makena Kelly, archival audio: So, you used Kalshi?
William, archival audio: Yes.
Makena Kelly, archival audio: When did you first start using the service?
William, archival audio: Probably when I got my tax return back.
Makena Kelly, archival audio: OK.
William, archival audio: So, I filed my taxes pretty early and I was like, “Oh, sweet. I got my tax return. What am I going to do with it?” So, I was like, “I’m going to just put it on Kalshi.”
Makena Kelly: He said that he goes up and down 100 dollars, but he hasn’t made any major winnings. Some of the stuff that we’ve heard. Some people making crazy insider bets making millions and millions of dollars. This is just a guy who was interested in this and just plays it for fun, it sounds like.
Brian Barrett: Kate, what do you see when you see a pop-up like this and Polymarket trying to—is it an attempt to legitimize itself to just a marketing stunt? And how does it tie into what you’re seeing with these companies anyway, that there’s the explosive growth that they’ve got trying to reach out to so many people and getting so many people hooked on what they’re offering?
Kate Knibbs: I mean, this particular event definitely seems like a very bald effort to woo DC-based journalists, if nothing else. One thing that Makena said sort of encapsulates what’s going on right now, the thing about the guys in the Palantir hoodies. So, I think it was the same week that this bar opened. Polymarket announced a partnership with Palantir and Palantir is helping them protect the integrity of their sports market. So, Palantir is going to be basically attempting to help Polymarket catch insider traders and market manipulators in all the sports games, which is kind of wild. I actually asked Polymarket last week whether they had any other deals with Palantir when I was trying to get them to say anything about whether they were investigating the Iran bets that have been raising a lot of eyebrows. And they said that Palantir was only helping them with sports, which I thought was freaking weird. And it speaks to how they’re rapidly expanding, but doing so in this really messy ad hoc way that doesn’t really make a lot of sense. Because I was like, “If you’re going to get Palantir involved, why wouldn’t you have them do this geopolitical stuff instead of March Madness?” Yeah, wild, wild times.
Tech
The Google Pixel 10 Is $150 Off
On the hunt for a new Android smartphone? Amazon currently has the 128GB Pixel 10 in Obsidian marked down to just $649, $150 off its usual price. It’s one of our favorite Android smartphones, particularly for users who take a lot of photos.
The biggest advantage to a Pixel over other Android smartphones is that you get the latest features from Google as soon as they’re available, often before other brands implement them. There are special camera modes that let you stitch together multiple group shots, or help you improve the angle and lighting with helpful tips. You’ll also find novel features like real-time translations and spam call screening, and Google even figured out how to let you AirDrop files with iOS users.
All of that functionality is powered by some of the better hardware you can find in an Android phone. The Pixel 10 sports a 6.3-inch OLED display with a 120Hz refresh rate for gaming and smoother scrolling. The Tensor G5 is a step up from the 10a’s Tensor G4 chip, and sports 12 GB of memory for better performance. They even support Qi2 wireless charging, making them compatible with existing MagSafe accessories.
While the Pixel 10a will satisfy most folks, the Pixel 10 offers a variety of upgrades over the more basic model, most of which pertain to the cameras and image processing. The rear camera has a proper 5X optical zoom, letting you nail those nature shots without scaring the wildlife, and the front camera sports auto-focus, which will make your big group selfies less of a headache. Oddly, the battery is actually a bit smaller in the Pixel 10, but neither disappointed us when it came to longevity.
If you’re sold on the Pixel 10, I spotted the discounted $649 price point for the 128 GB model in both Obsidian and Lemongrass, or $749 in Indigo. If you need more storage, the Obsidian and Frost colors were both marked down to $749 for the upgraded 256 GB version. If you’re wondering what other Android smartphones we like, make sure to check out our in-depth guide with picks from Google, Samsung, and OnePlus.
Tech
OpenAI Buys Some Positive News
OpenAI announced Thursday that it had acquired the online business talk show TBPN for an undisclosed sum. The move comes as OpenAI struggles with its public image, which has taken a significant hit in recent months.
Since launching in 2024, TBPN has risen in popularity among Silicon Valley circles by offering a daily live stream about the technology industry that’s seen as more tech-friendly than traditional outlets. The show’s two hosts, John Coogan and Jordi Hays, offer real-time commentary on breaking news, cycle through viral social media posts, and interview executives from companies including Meta, Salesforce, Palantir and OpenAI. It’s become especially popular among OpenAI staff and other AI researchers, many of whom are addicted to the social media platform X.
It’s hard to understand how a media startup fits into OpenAI’s core businesses selling ChatGPT, Codex, and a new super app the company is developing to consumers and enterprises. Last month, OpenAI’s CEO of Applications, Fidji Simo, told staff in an all hands meeting that the company needed to cancel its side projects and refocus around its core businesses.
In a memo to staff announcing the acquisition, Simo said the typical communications playbook does not apply to OpenAI. “We’re not a typical company,” she said in the memo, which was also published as a blog. “We’re driving a really big technological shift. And with the mission of bringing AGI to the world comes a responsibility to help create a space for a real, constructive conversation about the changes AI creates—with builders and people using the technology at the center.”
TBPN is a small business compared to OpenAI. The media firm says it generated $5 million in ad revenue last year, and was on track to make more than $30 million in revenue in 2026, according to the The Wall Street Journal. The show reportedly reaches around 70,000 viewers per episode across a variety of platforms. A source close to OpenAI says the company doesn’t expect TBPN to contribute financially to the business, though it will help with OpenAI’s communications strategy.
OpenAI has fallen under increased public scrutiny in recent months. After the company signed a deal with the Department of Defense in February, Anthropic’s Claude surged in downloads and claimed the top spot among Apple’s free apps. OpenAI’s leaders are also dealing with a growing QuitGPT movement which is made up of people who vow to never use OpenAI’s products. OpenAI President Greg Brockman cited AI’s popularity issues as a core reason for his increased political spending.
The acquisition makes OpenAI the latest Silicon Valley player to try owning and operating a news business. In recent decades, there have been several notable examples of technology leaders purchasing media firms, including Jeff Bezos buying The Washington Post, Marc Benioff buying Time Magazine, and Robinhood buying the newsletter company MarketSnacks. In each case, the acquisitions raised immediate questions about whether the outlets would remain truly independent. In her memo, Simo told staff that TBPN will retain editorial independence.
“TBPN is my favorite tech show. We want them to keep that going and for them to do what they do so well,” said OpenAI CEO Sam Altman in a post on X. “I don’t expect them to go any easier on us, [and I] am sure I’ll do my part to help enable that with occasional stupid decisions.”
OpenAI said TBPN will continue to “run their programming, choose their guests, and make their own editorial decisions,” according to Simo’s memo The company also said that TBPN will report directly to OpenAI’s VP of global affairs, Chris Lehane. WIRED previously reported how an economic research team under Lehane had struggled to report on AI’s negative impacts on the economy.
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