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Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014)

(spectrum.ieee.org)
137 points transpute | 1 comments | 29 Jun 25 21:48 UTC | HN request time: 0s | source
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transpute ◴[29 Jun 25 23:52 UTC] No.44417727[source]▶
More coverage of RF sensing, including laptops/phones with radios+NPU to sense their human:

2025, "Espargos: ESP32-based WiFi sensing array", 30 comments, https://news.ycombinator.com/item?id=43079023

2024, "How Wi-Fi sensing became usable to track people's movements", https://www.technologyreview.com/2024/02/27/1088154/wifi-sen...

2023, "What Is mmWave Radar?: Everything You Need to Know About FMCW", 30 comments, https://news.ycombinator.com/item?id=35312351

2022, "mmWave radar, you won't see it coming", 180 comments, https://news.ycombinator.com/item?id=30172647

2021, "The next big Wi-Fi standard is for sensing, not communication", 200 comments, https://news.ycombinator.com/item?id=29901587

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Animats ◴[30 Jun 25 03:37 UTC] No.44419092[source]▶
Right. The longer range versions of multistatic radar are used to detect stealth aircraft.[1][2] All that careful stealth geometry to minimize direct reflections doesn't help much when the emitters and receivers are in different locations.

[1] https://www.presstv.ir/Detail/2024/11/18/737423/guardians-of...

[2] https://www.yiminzhang.com/pdf/radar13_passive.pdf

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psunavy03 ◴[30 Jun 25 15:42 UTC] No.44424653[source]▶
. . . because we all saw how effective Iranian air defenses were at countering stealth aircraft recently.
replies(1): >>44425034 #
prasadjoglekar ◴[30 Jun 25 16:18 UTC] No.44425034{3}[source]▶
To be fair, Iranian air defences were awful at countering non stealthy Israeli aircraft as well.

The stealth bombers were just the most convenient vehicle for carrying the massive bomb.

replies(1): >>44425676 #
1. psunavy03 ◴[30 Jun 25 17:13 UTC] No.44425676{4}[source]▶
Open-source reporting has Israeli F-35s kicking the door down on the Iranian IADS. Strong data point as to their effectiveness when properly employed as compared to some of the woo-woo airshow fanboying over things like bistatic radar.

As always, the side who can best maximize the capabilities of their platforms while hiding/compensating for their limitations is the one who will win.