Radar vs. photometric launch monitors: how to choose

Launch monitors measure what the ball (and sometimes the club) does at impact, then pass that data to simulator software. Almost every consumer and commercial unit uses one of two measurement approaches — or a mix of both.

Radar (Doppler) launch monitors

Radar units track the ball by bouncing microwave signals off it and measuring the frequency shift as it moves. Because they track the ball rather than photograph it, they typically sit behind the golfer and generally need some ball-flight distance between the hitting position and the screen or net.

What to check before buying:

• The manufacturer's minimum distances from unit to ball, and ball to screen, for indoor use.
• Whether indoor spin is measured directly or calculated. Some radar units recommend special marked balls indoors.
• Whether the unit supports left-handed golfers from the same position.

Photometric (camera) launch monitors

Camera-based units take high-speed images of the ball — and on some models the club — immediately after impact. Because they only need to see the first moments of flight, they are often suited to shorter rooms.

Placement	Typical considerations
Floor unit beside the ball	Must be moved for left-handed players; needs a clear line of sight to the ball
Ceiling (overhead) mount	Supports both handedness without moving; requires suitable ceiling height and secure mounting

Hybrid units

Some launch monitors combine cameras and radar. The manufacturer's documentation should explain which sensor is responsible for which measurement.

How to choose

1. Measure the room first. Depth often rules options in or out. Sketch it in the Room Planner.
2. Decide on handedness. Mixed households may prefer overhead or behind-the-golfer placement.
3. Check software compatibility and subscriptions. Many units need a paid plan for certain data or course play.
4. Read the manufacturer's installation guide, not a retailer summary.

Researched guide based on publicly documented technology. We have not hands-on tested products on this site unless a product page says so explicitly.