Atmospheric correction error - NV5 Geospatial

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Last Post 23 Apr 2010 02:20 PM by anon

Atmospheric correction error

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anon

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23 Apr 2010 02:20 PM
I´ve a problem with Atmospheric Corrections. I´m working with Landsat TM with date 24-11-2009, All paramethers are correct, and the Window error is like this: ACC error: avhead: IDL error: ACC_AVHEAD_Error -- some channels found outside 100 to 30000 cm-1 range ACC_AVHEAD ACC_HYPER2 ACC_ACC ENVI_ACC_EVENT ENVI_FLAASH_PROCESS_MANAGER IDLRTMAIN $MAIN$ Maybe someone can tell me what I can do, with this problem, Thanks.

MariM

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Posts:2396
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23 Apr 2010 02:38 PM
Can you post the information from the template.txt that is created in the output directory after you run FLAASH and you get this error?

Deleted User

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22 Sep 2010 05:15 AM
Hi, I have exactly the same problem. I guess that it has to do with the computation of the wavelength response functions for each channel but still I 'm not sure what I have to do or what I 'm doing wrong. Bellow are illustrated the parameters. I would appreciate your help a lot. Regards. Project Parameters enviacc.prj.radiance_file = D:\HYPERION_L1T\1_Subset\Hyperion_sub enviacc.prj.reflect_file = D:\HYPERION_L1T\2.FLAASH\HYP_FLAASH enviacc.prj.water_band_choice = 1.13 enviacc.prj.water_retrieval = 1 enviacc.prj.modtran_directory = D:\HYPERION_L1T\2.FLAASH\ ; ; MODTRAN Parameters enviacc.modtran.visvalue = 40.0000 enviacc.modtran.f_resolution = 5.0000 enviacc.modtran.day = 5 enviacc.modtran.month = 9 enviacc.modtran.year = 2001 enviacc.modtran.gmt = 8.8061 enviacc.modtran.latitude = 36.7891 enviacc.modtran.longitude = 24.3560 enviacc.modtran.sensor_altitude = 705.0000 enviacc.modtran.ground_elevation = 0.2850 enviacc.modtran.view_zenith_angle = 180.0000 enviacc.modtran.view_azimuth = 0.0000 enviacc.modtran.atmosphere_model = 2 enviacc.modtran.aerosol_model = 1 enviacc.modtran.multiscatter_model = 2 enviacc.modtran.disort_streams = 8 enviacc.modtran.co2mix = 390.0000 enviacc.modtran.water_column_multiplier = 1.0000 ; ; Image Parameters enviacc.img.nspatial = 404 enviacc.img.nlines = 497 enviacc.img.data_type = 2 enviacc.img.margin1 = 0 enviacc.img.margin2 = 0 enviacc.img.nskip = 0 enviacc.img.pixel_size = 30.0000 enviacc.img.sensor_name = HYPERION ; ; Analysis Parameters enviacc.ana.aerosol_scaleht = 1.5000 enviacc.ana.use_adjacency = 1 enviacc.ana.output_scale = 10000.0000 enviacc.ana.polishing_res = 9 enviacc.ana.aerosol_retrieval = 1 enviacc.ana.calc_wl_correction = 1 enviacc.ana.reuse_modtran_calcs = 0 enviacc.ana.use_square_slit_function = 0 enviacc.ana.convolution_method = fft enviacc.ana.use_tiling = 1 enviacc.ana.tile_size = 2000.0000 ; ; Spectral Parameters enviacc.spc.wavelength_units = micron enviacc.spc.lambda = [ 356.3700, 366.5400, 376.7100, 386.8800, 397.0500, 407.2100, 417.3800, 427.5500, 437.7200, 447.8900, 458.0600, 468.2300, 478.4000, 488.5700, 498.7400, 508.9100, 519.0800, 529.2500, 539.4200, 549.5900, 559.7500, 569.9200, 580.0900, 590.2600, 600.4300, 610.6000, 620.7700, 630.9400, 641.1100, 651.2800, 661.4500, 671.6200, 681.7900, 691.9600, 702.1200, 712.2900, 722.4600, 732.6300, 742.8000, 752.9700, 763.1400, 773.3100, 783.4800, 793.6500, 803.8200, 813.9900, 824.1600, 834.3300, 844.5000, 854.6600, 864.8300, 875.0000, 885.1700, 895.3400, 905.5100, 915.6800, 925.8500, 936.0200, 946.1900, 956.3600, 966.5300, 976.7000, 986.8700, 997.0400, 1007.2000, 1017.3700, 1027.5400, 1037.7100, 1047.8800, 1058.0500, 852.0000, 862.0900, 872.1800, 882.2700, 892.3500, 902.4400, 912.5300, 922.6200, 932.7200, 942.8100, 952.8900, 962.9800, 973.0700, 983.1600, 993.2500, 1003.3700, 1013.3700, 1023.4700, 1033.5699, 1043.6700, 1053.7700, 1063.8600, 1073.9600, 1084.0601, 1094.1600, 1104.2600, 1114.2600, 1124.3500, 1134.4500, 1144.5500, 1154.6500, 1164.7500, 1174.8400, 1184.9399, 1195.0400, 1205.1400, 1215.2400, 1225.2400, 1235.3300, 1245.4301, 1255.5300, 1265.6300, 1275.7300, 1285.8300, 1295.9200, 1306.0200, 1316.1200, 1326.1200, 1336.2200, 1346.3199, 1356.4100, 1366.5100, 1376.6100, 1386.7100, 1396.8101, 1406.9000, 1417.0000, 1427.0000, 1437.1000, 1447.2000, 1457.3000, 1467.3900, 1477.4900, 1487.5900, 1497.6899, 1507.7900, 1517.8900, 1527.9800, 1537.9800, 1548.0800, 1558.1801, 1568.2800, 1578.3700, 1588.4700, 1598.5699, 1608.6700, 1618.7700, 1628.8700, 1638.8600, 1648.9600, 1659.0601, 1669.1600, 1679.2600, 1689.3600, 1699.4500, 1709.5500, 1719.6500, 1729.7500, 1739.7500, 1749.8500, 1759.9399, 1770.0400, 1780.1400, 1790.2400, 1800.3400, 1810.4301, 1820.5300, 1830.6300, 1840.6300, 1850.7300, 1860.8300, 1870.9200, 1881.0200, 1891.1200, 1901.2200, 1911.3199, 1921.4200, 1931.5100, 1941.6100, 1951.6100, 1961.7100, 1971.8101, 1981.9000, 1992.0000, 2002.1000, 2012.2000, 2022.3000, 2032.4000, 2042.4900, 2052.4900, 2062.5901, 2072.6899, 2082.7900, 2092.8899, 2102.9800, 2113.0801, 2123.1799, 2133.2800, 2143.3799, 2153.3799, 2163.4700, 2173.5701, 2183.6699, 2193.7700, 2203.8701, 2213.9600, 2224.0601, 2234.1599, 2244.2600, 2254.2600, 2264.3601, 2274.4500, 2284.5500, 2294.6499, 2304.7500, 2314.8501, 2324.9500, 2335.0400, 2345.1399, 2355.2400, 2365.2400, 2375.3401, 2385.4299, 2395.5300, 2405.6299, 2415.7300, 2425.8301, 2435.9299, 2446.0200, 2456.1201, 2466.1201, 2476.2200, 2486.3201, 2496.4199, 2506.5100, 2516.6101, 2526.7100, 2536.8101, 2546.9099, 2557.0100, 2567.0000, 2577.1001] enviacc.spc.fwhm = [ 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.350000, 11.340000, 11.320000, 11.280000, 11.220000, 11.160000, 11.080000, 10.990000, 10.900000, 10.810000, 10.710000, 10.620000, 10.530000, 10.460000, 10.390000, 10.330000, 10.290000, 10.270000, 10.260000, 10.270000, 10.310000, 10.370000, 10.440000, 10.510000, 10.580000, 10.640000, 10.670000, 10.690000, 10.710000, 10.770000, 10.860000, 10.970000, 11.080000, 11.180000, 11.240000, 11.260000, 11.260000, 11.270000, 11.270000, 11.280000, 11.290000, 11.300000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.310000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.170000, 11.160000, 11.150000, 11.140000, 11.130000, 11.120000, 11.100000, 11.090000, 11.070000, 11.050000, 11.030000, 11.020000, 11.000000, 10.980000, 10.960000, 10.940000, 10.930000, 10.910000, 10.890000, 10.880000, 10.870000, 10.860000, 10.850000, 10.840000, 10.830000, 10.830000, 10.820000, 10.820000, 10.820000, 10.830000, 10.840000, 10.850000, 10.860000, 10.880000, 10.900000, 10.920000, 10.950000, 10.980000, 11.010000, 11.040000, 11.070000, 11.110000, 11.140000, 11.180000, 11.220000, 11.260000, 11.300000, 11.340000, 11.380000, 11.420000, 11.460000, 11.500000, 11.540000, 11.570000, 11.610000, 11.640000, 11.670000, 11.700000, 11.720000, 11.750000, 11.770000, 11.780000, 11.800000, 11.810000, 11.820000, 11.820000, 11.820000, 11.820000, 11.810000, 11.800000, 11.780000, 11.760000, 11.740000, 11.710000, 11.680000, 11.640000, 11.600000, 11.560000, 11.510000, 11.470000, 11.420000, 11.370000, 11.330000, 11.280000, 11.240000, 11.190000, 11.150000, 11.110000, 11.070000, 11.040000, 11.010000, 10.990000, 10.960000, 10.950000, 10.930000, 10.930000, 10.920000, 10.920000, 10.920000, 10.910000, 10.900000, 10.890000, 10.880000, 10.860000, 10.840000, 10.820000, 10.800000, 10.780000, 10.750000, 10.730000, 10.700000, 10.670000, 10.650000, 10.620000, 10.600000, 10.570000, 10.550000, 10.520000, 10.500000, 10.490000, 10.470000, 10.450000, 10.440000, 10.430000, 10.430000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000, 10.420000] enviacc.img.p_input_scale = [ 400.0000, 400.0000, 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MariM

Veteran Member

Posts:2396
Veteran Member

22 Sep 2010 11:41 AM
I haven't seen this error before. You might try turning off various processes to see if you can get it to run and track down which process is causing the error. You could start with the wavelength correction. Then try spectral polishing, aerosol retrieval and eventually water retrieval.

Deleted User

New Member

Posts:

26 Sep 2010 05:46 AM
I will so, thank you very much for your time. Regards

Deleted User

New Member

Posts:

28 Sep 2010 04:45 PM
When you get the "ACC_AVHEAD_Error -- some channels found outside 100 to 30000 cm-1 range", it usually means there's something wrong with your wavelength units. Your wavelengths are in nanometers, not microns. Try changing 'micron' to 'nanometer' in the following line: enviacc.spc.wavelength_units = micron

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