Mounted assets¶

Asset reference

Concept¶

Mounting places a payload in the parent body frame (offsets + Euler sequence). Pointing describes how the payload boresight moves: fixed to the body, scanning, spinning on a cone, or tracking a target (with fallback).

Correct mounting is essential: Coverage FOV, antenna gain toward a facility, and swath graphics all depend on where +Z points after parent attitude is applied. Sensors and antennas share this model; transmitters/receivers select a parent but use Simple/Complex RF parameters instead of the full mount block.

Mountable parents¶

spacecraft · facility · vehicle

Mounting¶

Parameter	Type	Default
Rotation sequence	select	`321` (also 123,132,213,231,312,121,131,212,232,313,323)
Rotation 1/2/3 [deg]	decimal	`0,0,0`
X/Y/Z offset [m]	decimal	`0,0,0`

Pointing modes¶

Mode	Extra parameters	Defaults
Body-Fixed	—	—
Scanning	Scan rate [deg/s], Scan amplitude [deg]	`1`, `10`
Conical Spin	Spin rate [deg/s], Cone half angle [deg]	`1`, `10`
Targeted	Target select (Nadir/Earth center or spacecraft/facility/target/vehicle); Fallback mode (Body-Fixed / Scanning / Conical Spin) + fallback params	—

Conventions¶

Sensor boresight: +Z in SENSOR frame
Antenna boresight: +Z

Mounted asset pointing

Sensor or antenna — mount offsets, Euler sequence, pointing mode.

Sensors · Antenna · Spacecraft