Spacecraft Zenith Variations

Aim and Objectives

Purpose of test: .

Additional Objectives

• .

Methodology

Data

• Data was generated by .
• Location and parameters for evaluation area.
• Image Suite: Image resolutions: 50cm, 20cm, 10cm, 5cm.
  • emission
    • .
  • incidence
    • .
    • .

Spacecraft:

Sun:

Bigmaps

The following TAG1 bigmaps were tiled/iterated and evaluated:

Starting topography defined from: ?

Iteration Parameters

Reset albedo/slopes: ?YES

Calculate Central Vector: ?YES

Differential Stereo: ?YES

Shadows: ?NO

Results

Test11STU Comparative Results

Test11S Results

Test11T Results

Test11U Results

Discussion

The measures of accuracy are plotted for each test in figures ?? to ?? under Tables and Figures (below).

Figure 1: Minima

Figure 1 illustrates the minimum uncertainty and RMSs for each test, and at which iteration each minimum occurs. The following patterns are apparent:

• Test U achieves the minimum value for every measure in the least number of iterations: 5 to 15 iterations sooner than Test T; and 15 to 20 iterations sooner than Test S (excluding Test S - CompMapVec RMS).

• Test S consistently gives the largest RMS but the smallest formal uncertainty.
• CompareOBJ RMS (with and without optimal translation and rotation varies across tests by less than 0.2cm, although Test U consistently archives the minimum RMS in significantly fewer iterations.

Tables and Figures

Formal Uncertainty

CompMapVec RMS

CompareOBJ RMS

CompareOBJ With Opt Tran & Rot

Traces Running North_South

Traces Running West-East

Heat Plots