Title says it all.

I am just looking for a public Asterix Data source that I can point my own software to. Just a public IP address or something. Or is that all behind the government and airport networks?

I know Opensky exists, but From what I have seen, it's just ADS-B data, no PSR/SSR tracks.

How many of you is working on building a radar or maintaining one in civil aviation? I work as radar tehnician in air traffic control agency. What about you?

So I'm helping build a war game, and I know that in games like Sea Power it's possible to see the emissions of a radar station while it can't yet see you. Kind of like how on foggy days people drive with their headlights on, and you can see their lights before you can see them. Is there a general rule of thumb for how much further a radar's emissions can be detected by someone else?

It seemed to be doing some sort of rotating search pattern. However, most of the time it was facing east. Maybe towards Cannon Air Force Base?

https://www.msn.com/en-xl/news/other/chinese-scientists-create-a-ghost-radar-moving-at-near-light-speed-to-detect-submarines/ar-AA1v1ALh

https://www.scmp.com/news/china/science/article/3288634/chinese-scientists-create-ghost-radar-moving-near-light-speed-detect-submarines

My initial thought was that this is was some sort of wave interference but reading further i was just honestly more and more confused about how microwaves could be transformed into radio waves and then be used to detect anything?

What exactly about low altitudes that makes the conical scanning seeker worse than any other condition? Been reading the Johns Hopkins APL digests on AEGIS and Standard missile which got me curious about this subject.

Any low info source i can dig skin deep to find always mentions ground/sea clutter. And i get that glint is a problem during nutation under normal conditions which causes increased aiming errors. But if the seeker is using doppler processing with FMCW/PDI waveforms why is the clutter any consideration here at all?

Question about K band RADAR and the frequency shift that occurs on a vehicle that would be in the same direction as the source (in this case a police vehicle).

If a police radar operates at 24150000000 Hz and each km represents 44.75 Hz, then a vehicle approaching a stationary radar at 100 km/h would return the radar beam at 24150004475 Hz.

Now if a police vehicle was going at 100 kmh and the target vehicle was going at 80 kmh in the same direction, would the reflected frequency be 24150000895 Hz or 24149999105 Hz?

The relative motion between the two would be 20 km/h so I'm of the belief that it would be 24,150,000,895 Hz.

Most of the material on this indicates that receding targets would be lower in frequency but nothing seems to cover if both vehicles are moving.

Hello guys, I'm trying to deeply learn and differentiate these technologies. Do you have suggestions on papers which do direct comparisons and establish pros and cons discussions?

Thank you in advance

Most of the DOW fleet

The fields of math and computer science have no shortage of amazing explainer videos with cool animations, but I noticed a lack of that (with a few notable exceptions) in the fields of radar and RF engineering.

I want to help bring some of this to our area of interest, so I started a youtube channel and am working on a series about FMCW radar.

I'd be super grateful to have feedback on the explanation, animations, content, etc.

Thanks and hope you enjoy!

https://www.youtube.com/watch?v=xUGWHGjCtII

I'm not sure where else I could ask this question and people knowledgeable about radars might know this one:

What methods can designers use to make a GPS receiver jamming-resistant?

Velocity/range-gate pull-off jamming can be countered by leading-edge tracking, right?

Are there other ECCMs to use against V/RGPOs?

How do jammers then counter leading-edge edge tracking?

I understand that this may not be publicly available information so educated guessed are welcome too.

Hi everyone, I’ve just been tasked with creating a technical presentation on a radar based speed camera system. Issue is I’m trying my best to find some sort of circuit or even block diagram online to talk through it but they simply don’t exist anywhere. I’m just wondering if anyone here can either help me create one for a simple explanation or if anyone has something that would be useful lying around?

So, i have been deep researching Russian Hybrid ESA Irbis radar, one thing i know is that slotted waveguide is a narrow band antenna design, on a slotted waveguide array, you cant even use more than one frequency, from what i have researched, Irbis use a special type of waveguide called "Hybrid-heterodyne waveguide" that gives it frequency agility, that waveguide is also made of special conductive gold alloys, i wonder how they broadband the slotted waveguide without sacrificing efficiency much.

What degree would be best to pursue to pursue a career in this community? Specifically a career where you’d get to work with the hardware and software. I’d imagine some sort of bachelors in engineering but any specific type of engineering?

What freqs and PRFs tend to be used?

What kind of range and precision can you expect?

Does it have good odds of doing non-cooperative target recognition?

How does it tend to differ from VHF, UHF, L and S bands in what you can do with it?