Most tracking infers motion from pictures. A camera sees where an object was in two frames and calculates the rest, which is why it needs light, calibration and a clear line of sight. Doppler radar measures velocity itself, directly, with nothing attached to the object. One measurement layer. Four sports on top of it.
The distinction sounds pedantic until you look at what it costs. An optical system does not measure speed. It measures where something appeared in one frame, where it appeared in the next, and divides. Every error in those two positions is amplified by the division, and the whole method stops working the moment the light does. A Doppler radar measures velocity itself: the frequency of the returned signal is shifted by the motion, and that shift is the measurement. Nothing is inferred, nothing is attached to the object, and darkness and rain are irrelevant to it.
Infers velocity by differentiating position across frames. Needs light, calibration and line of sight. Excellent at recognising what a thing is, and at seeing many slow things at once.
Measures velocity directly from the Doppler shift, then resolves range from the chirp. One fast object in the dark, in the rain, at distance, with nothing on it.
It sees motion, not identity, and anything moving slower than about 2 m/s towards or away from the sensor disappears into ground clutter. A putt is invisible to it. We say so on the page where it matters.
The affiliate this team comes out of has built Doppler instrumentation for ballistic test ranges and space surveillance for decades. The physics is not new to us. The sport is.
The same sensor and the same signal chain measure a golf ball, a puck, a football and a race car. What changes is how strongly the object reflects, how fast it travels, and therefore how far away it can be seen. Pick an object and watch the measurement run. The panel underneath is not marketing copy: it is what this layer can and cannot deliver for that object, with the class of every claim shown.
We are honest about which of these is a product and which is a programme. Golf is the business. The rest are the same layer pointed at a different object, and we say plainly how far each one has come.
Launch measurement at the tee, and full course coverage through a distributed grid rather than one long range sensor. The measured shot becomes the club's operating picture and the player's history.
Enter the golf platform ▶A trackside grid that measures every car continuously, independently of satellites, in tunnels and street canyons where positioning fails. Developed directly with a team in the sport's top series.
Under NDA · measurement campaign scheduled 2026Shot speed is the sport's marquee number and it is still estimated almost everywhere. Radar measures it directly with nothing inside the puck. The open question is the arena, not the physics.
The concept and the pilot ▶Ball flight and strike power as a measured layer underneath video, not a replacement for it. Video already knows who did what. It cannot tell you how the ball was actually spinning.
The concept and the trial ▶Measured numbers are worth more on screen than estimated ones, in any of the four. We treat broadcast as an output of the measurement layer and always sell it with the rights holder, never around them.
Plenty. Sports where the object is slow and curved, where a phone camera already does the job well enough, or where the measurement contract is already locked to somebody else for years. A sensor company that says yes to everything measures nothing well.
Deliberately simple on the outside: a small sealed unit, several of them where one will not do, and a fusion layer that turns many sensors into one picture. The numbers below are the real ones, each with its class.
A frequency modulated continuous wave radar in the licence free band, in a sealed unit with no moving parts and no lens to clean. A second band is in development for the long range case.
No single radar covers a golf course or a circuit. Coverage comes from several units and a fusion layer that merges them into one track. Building and synchronising multi radar systems is exactly the heritage this team comes from.
Synchronised sensors, multilateration, and a tracker that rejects ghosts and reflections. Identical for every customer, and the reason the layer can serve four very different products.
Certified velocity measurement on objects from 30 to 10,000 m/s. This is the affiliate instrumentation heritage the team builds on, not a specification of the sports product.
To a golf ball at 24 GHz: mobile power, fixed power, and fixed power against a higher reflectivity ball. Calculated from the link budget, not yet measured on a range. Larger objects are seen very much further, which is why the constraint differs by sport.
Set by the chirp bandwidth. This is how finely the sensor separates two objects in depth. It is not a position accuracy figure, and anybody quoting centimetres of range resolution at this bandwidth is quoting something else.
Median across a full race simulation on real circuit geometry, from several sensors fused. It comes out of our simulation chain and has not yet been measured at a live event.
Ball speed and launch angle for the golf case, with carry projected to about ±4.6 m in still air. These are the targets the prototype is being built against and the numbers the first measurement campaign will either confirm or move.
Per sensor, with several sensors seeing the object at any moment. Independent of light, weather and satellite visibility.
We do not claim centimetre precision, we do not claim validated spin, we hold no CE or FCC certification yet, and we have no measured accuracy figures from a live venue. Officiating decisions rest with governing bodies. Every figure above carries its class, and the campaign that turns the design targets into measured ones is dated below.
The honest position, in public. We are a hardware programme with a working signal chain, a validated physics model, and no measured venue data yet. That last part is what the next twelve months are for.
The measurement chain is running on development hardware, and the physics model behind every simulation on this site is built on decades of Doppler instrumentation from the affiliate we come out of.
Radar cross section and dynamics measured on real objects with instrumentation grade reference radars, in golf and in motorsport. Until those land, every performance figure on this site is a design target or a simulation, and is labelled as such.
A prototype measuring the vital parameters, in the enclosure it will ship in, shown at the industry's main annual gathering.
CE and FCC, then the first instrumented venues running the full measurement catalogue alongside the systems they already have, scored head to head.
The same layer, the same fusion, across sports and geographies.
A 60 minute technical session: your questions, our physics, and a walk through the chain behind every number on this page, including the ones we have not measured yet.
Request a technical sessionOle Kjærgaard Schrøter · Alpha Vision · oks@weibelventures.com · +45 20 97 56 20