Character position definition and scope:

A one-character alphabetic code indicates the recording mode of the remote-sensing device, specifically, whether the sensor is involved in the creation of the transmission it eventually measures.  A fill character ( | ) is used when no attempt has been made to code this position.

Record requirements for National-level and Minimal-level records:  Optional.

Guidelines for applying content designators:

Code:

Description:

a

Active

b

Passive

u

Unknown

z

Other  A sensor recording mode for which none of the other defined codes is appropriate.

|

No attempt to code

To return, select:

007:  Remote-sensing image

007  Physical Description Fixed Field