Yuma Proving Ground (YPG): YPG is located adjacent to the Colorado River in the Sonoran Desert. The UXO Standardized Test Site is located south of Pole Line Road and east of the Countermine Testing and Training Range. The open field range, calibration grid, blind test grid, mogul area, and desert extreme area comprise the 350 m by 500 m general test site area. The open field site is the largest of the test sites and measures approximately 200 m by 350 m. To the east of the open field range are the calibration and blind test grids that measure 30 m by 40 m and 40 m by 40 m, respectively. South of the open field is the 135 m by 80 m mogul area consisting of a sequence of man-made depressions. The desert extreme area is located south east of the open field site and has dimensions of 50 m by 100 m. The desert extreme area, covered with desert-type vegetation, is used to test the performance of different sensor platforms in a more severe desert conditions/environment.

• Calibration Lanes 0.27 acres

The calibration portion of the test site consists of at least nineteen (19) lanes. Seventeen (17) lanes contain six identical munitions buried in various orientations and at three different depths. One lane contains four (4) steel spheres buried at a depth of 0.5 to 2 meters. Another lane contains two (2) each (30.48 cm and 60.96 cm diameter) circular steel plates buried at 30.48 cm and 91.44 cm respectively. A third lane contains 15 cm and 30 cm diameter copper wire hoops (12, 16, 18 and 20 gauge) buried at 0.3 meters depth. The wire hoop gives a standard signature to compare to the signature the detection instrument is receiving. If an installation has site-specific munitions that are not part of the Standardized Target, extra calibration lanes can be added.

Munitions generally rectangular in shape (aspect ratio not equal to one) are placed into the ground in six (6) orientations and at three (3) different depths. Munitions generally round in shape (aspect ratio of one) are buried at three different depths. The first and last opportunity of each Calibration Lane contains a 3.6 kg steel ball (diameter = 8.9cm) buried at 15 cm to provide a uniform signature that can be identified when looking at raw data.

• Blind Test Grid 0.43 acres

The YPG Blind Test Grid (BTG) consists of a 1600 square meter area that is located east of the open field range. The BTG will be made up of the same type of munitions found in the Calibration Lanes and Open Field Site. Clutter items may include metal debris, rocks, desert vegetation roots, etc.

• Open Field 15.38 acres

The Open Field area is the largest of the test areas at YPG Standardized UXO Technology Demonstration Site and measures approximately 200 by 350 meters (10 acres). The area provides the demonstrator with a variety of realistic scenarios essential for evaluating sensor system performance. Challenges include open areas, dips, ruts, electrical lines, metallic fencing, desert extreme, stone pads and roadway areas. There are thousands of grid cells within the Open Field area. At the center of each grid cell, the demonstrator will find either ordnance, range clutter, or nothing at all.

• Scenario 1. Moguls 2.64 acres

Mogul Area - (refer to Protocols Appendix G for layout). The Mogul Area consists of two (2) areas (the rectangular or driving portion of the course and the triangular section with more difficult, non-drivable terrain). The rectangular section includes six (6) test lanes, which incorporate a slope challenge, 0.61m and 0.91m moguls, 0.61m and 0.91m slanted moguls, and vibration lanes. This section of the course is designed for testing vendors' vehicles' abilities to traverse adverse terrain (vehicle must minimize damage to terrain) and to check accuracy of sensor equipment when subjected to vibration and offset angles created by rough terrain. The triangular section incorporates more intense moguls and terrain, which can only be traversed only by foot using hand held or pushed sensoring devices. A series of craters (as deep as 0.91m) and mounds (as high as 0.91m) will encompass this section. As rainwater fills the craters, the water serves as another challenge to the demonstrators.

• Scenario 2. Desert Extreme 1.23 acres

The desert extreme portion of the test site consists of a 5,000 square meter area that is located south east of the open field site. The area is covered with desert-type vegetation and is used to test the performance of different sensor platforms in a more severe desert conditions/environment. The soils in this region may have a horizon of calcium carbonates that tend to cement together in the soil, producing hard layers in the subsurface. Ground temperature can reach up to 160 degrees Fahrenheit by early afternoon. Spring time air temperatures in shaded areas can exceed 110 degrees Fahrenheit.