imus

It's severely limits the development of applications featuring, for example, motor control or orientation sensing (gyros/IMUs).

Lidars need to get cheaper - so do decent RTK GPS receivers and IMUs.

The real killer has been rapid update rate inertial measurement units (IMUs) which refresh rapidly enough to make interesting feedback loops practical.

However, it's also trivial to integrate other sensors such as IMUs, GPS, lasers, etc.

Atom interferometry involves measuring the relative acceleration and rotation of a cloud of atoms within a sensor case, with potentially far greater accuracy than today’s state-of-the-art IMUs.

> > The short version is that it uses a combination of star trackers and IMUs > (Inertial Measurement Units).

That's not a limitation of the hardware; castAR has cameras and IMUs, and it could orient itself via any identifiable reference point, which need not be the mat.

The IMUs and star trackers provide constant positional information to the spacecraft's Guidance and Control processor, which like the command and data handling processor is a 12-MHz Mongoose V.

I quit working on this same idea about a year ago after concluding that the resolution on (existing) 9-axis IMUs wasn't good enough for serious tennis players.

The star trackers analyze pictures of the > surrounding star field to determine how it is pointing instantaneously, and > the IMUs track how it is rotating in between each of those instants.

There are also people working on quadrotors that don't cooperate/do acrobatics and who don't rely on fixed vision systems - for example people working on autonomous quadrotor mapping [5] and using IMUs and on-robot vision [6].

Lastly, I believe the greatest problem is the diversity of IMUs out there: you need a lot of consistency out of the IMU to get anything done at all (this may be solvable if you settle on a single manufacturer).

"heartbeat", system diagnostics, localization signals, IMUs, etc).

A wealthy person who has some notoriety (even for having just a big butt) can hire a ghost writer and with the right exposure(like being pimped on Imus, or the like) can sell a huge amount of books?