An apparatus was built for this experiment, to allow a four meter diameter pseudo plot to be rotated beneath a Landsat band radiometer mounted 8.8 meters above the `plot'. The pseudo plot consisted of several .3 x .3 x .6 meter boxes of soybeans aligned in rows. The backgrounds were trays of Russell soils or boards painted with 3M flat black and 3M flat white to allow for a wide range in reflectance backgrounds. The pseudo plot is easily rotated to obtain any desired row direction.
Data were obtained for three soil covers, three backgrounds, and 72 row directions for several solar zenith-azimuth ranges. Data were collected on three different days.
This experiment is closely related to experiment 801810.
LARSPEC Identification Record Codes:
1. Plot Number
_______________________________________________________ Plot Description Number _______________________________________________________ 841 Soybeans - 100% soil cover 842 Russell soil - 0% soil cover 843 3M flat black - 0% 'soil' cover 844 3M flat white - 0% 'soil' cover 845 Sorghum 100% soil cover 846 Wheat 100% soil cover 851 Soybeans in rows with soil background 852 Soybeans in rows with 3M flat black background 853 Soybeans in rows with 3M flat white background 861 Sorghum in rows with soil background 862 Sorghum in rows with 3M flat black background 863 Sorghum in rows with 3M flat white background 871 Wheat in rows with soil background 872 Wheat in rows with 3M flat black background 873 Wheat in rows with 3M flat white background _______________________________________________________2. Experimenter Parameter 02 (additional information)
Experimenter parameter 02 is a unique observation code for each scene (soil, 3M flat black, soybean/soil background, etc.) and row direction.
_______________________________________________________ Experimenter Description Parameter 02 _______________________________________________________ 401-472 72 row directions of crop/soil, 0, 5, 10, 15, ... 355 degrees, respectively 501-572 72 row directions of crop/black, 0, 5, 10, 15, ... 355 degrees, respectively 601-672 72 row directions of crop/white, 0, 5, 10, 15, ... 355 degrees, respectively 841 Soybean - 100% soil cover 842 Russell soil 843 3M flat black 844 3M flat white 845 Sorghum 100% soil cover 846 Wheat 100% soil cover _______________________________________________________This experimenter parameter is envisioned to be used when updating the identification records.