528 
Performance Evaluation. Continuing with the 
functions that are analogous for the TM and MSS are 
Data Quality Assessment for TM and Performance 
Evaluation Product Generation for MSS. Each 
function provides a comprehensive analysis 
capability in the form.of statistical and 
performance reports, formatted and unformatted 
dumps, and interactive display and manipulative. 
capability. The TM function is more complex simply 
because of the additional complexity of the TM 
instrument and the TM calibration/correction 
processes. The TM function can also ingest data 
from HDT and CCT and provide full assessment 
capability for all products. The reports provide 
the detailed data necessary to assess the 
performance of the TIPS correction process and to 
provide some insights into instrument performance. 
  
Additionally, since the MIPS has no product 
generation capability, the MSS function can also 
create a fully corrected (CT digital product for 
analysis of its own geometric correction performance. 
Control Point Library Build. Each system has a 
complete Control Point Library Build (CPLB) 
function. They are dissimilar only in that the TM 
CPLB system was designed to model and build a 
library of geodetic control points on a swath, 
rather than a scene basis. The error modeling and 
blunder checking are correspondingly somewhat more 
sophisticated in the TM function, also having taken 
advantage of lessons learned in the MSS system. 
  
The two remaining processes, Initial and Final 
Product Generation, are unique to TIPS. 
Initial Product Generation. Archival data (HDTA) 
are ingested and corrected to produce geometrically 
corrected product (P) imagery on High Density Tape 
(HDTp). This process also requires special purpose 
hardware, for example the high speed array processor 
(shared with archive generation) in which the data 
is actually corrected (resampled) and special 
purpose input/output (1/0) devices. This is also a 
pipeline process but since scene buffering is 
required, the data must be stored on computer discs 
- 50 the process is disc 1/0 :Fimited: and executes ‘at 
1/16 real time (5 Mbps). 
  
Final Product Generation. This.function ingests 
data from either HDTp or HDTp and produces high 
resolution 241mm latent film or digital products on 
(CT. The latentifilmeis processed at GSFC, assessed 
for quality (density range, geometric scale, 
cosmetics, and video quality). and the first 
generation film master is shipped to the NOAA DDC to 
serve as the archival film product for subsequent 
generation of user film products. (C7 masters are