Technical performance measures (TPM) is a term used by the US military to refer to key technical goals that needed to be met, where the technical goals were vital for the functioning of a system in its environment.
Definitions
TPM is defined as "the continuing prediction and demonstration of the degree of anticipated or actual achievement of selected technical objectives."
A definition given by Dr. Norman Waks, formerly Director of Defense Research and Engineering in the Office of the Secretary of Defense is as follows:
References
Technical performance measure Wikipedia(Text) CC BY-SA