Обработка сейсмических данных в системе FOCUS. Карапетов Г.А - 8 стр.

UptoLike

Составители: 

Рубрика: 

7
ɡɚɞɚɧɢɹ ɧɟɨɛɯɨɞɢɦɨ ɭɤɚɡɚɬɶ ɜɵɯɨɞɧɨɣ ɩɨɬɨɤ ɤɚɪɬɨɱɤɨɣ DSKWRT, ɝɞɟ ɜ
ɤɚɱɟɫɬɜɟ ɩɟɪɜɨɝɨ ɩɚɪɚɦɟɬɪɚ ɡɚɞɚɟɬɫɹ ɢɦɹ ɜɵɯɨɞɧɨɝɨ ɮɚɣɥɚ ɩɨ ɩɪɚɜɢɥɚɦ
UNIX, ɬɪɟɬɶɟɝɨ ɩɚɪɚɦɟɬɪɚɢɦɹ ɷɬɨɝɨ ɮɚɣɥɚ ɜ ɤɚɬɚɥɨɝɟ ɜ ɛɚɡɟ ɞɚɧɧɵɯ (ɪɢɫ.
3).
2.1. Ⱥɜɬɨɦɚɬɢɱɟɫɤɚɹ ɪɟɝɭɥɢɪɨɜɤɚ ɚɦɩɥɢɬɭɞ.
Ⱦɥɹ ɜɨɫɫɬɚɧɨɜɥɟɧɢɹ ɚɦɩɥɢɬɭɞ ɬɪɚɫɫ ɢɫɩɨɥɶɡɭɸɬɫɹ ɩɪɨɝɪɚɦɦɵ ɢɡ
ɩɚɤɟɬɚ Scaling.
Ɋɚɫɫɦɨɬɪɢɦ 2 ɢɡ ɧɢɯ.
GAIN – ɩɪɨɝɪɚɦɦɚ ɚɦɩɥɢɬɭɞɧɨɣ ɪɟɝɭɥɢɪɨɜɤɢ ɬɪɚɫɫ ɩɭɬɟɦ ɭɦɧɨɠɟɧɢɹ
ɬɪɚɫɫɵ ɧɚ ɷɤɫɩɨɧɟɧɰɢɚɥɶɧɭɸ ɮɭɧɤɰɢɸ ɨɬ ɜɪɟɦɟɧɢ ɫ ɰɟɥɶɸ ɤɨɦɩɟɧɫɚɰɢɢ
ɚɦɩɥɢɬɭɞɧɵɯ ɢɫɤɚɠɟɧɢɣ, ɫɜɹɡɚɧɧɵɯ ɫ ɩɪɨɰɟɫɫɨɦ ɪɚɫɩɪɨɫɬɪɚɧɟɧɢɹ ɜɨɥɧ ɜ
ɫɪɟɞɟ (ɡɚɬɭɯɚɧɢɹ, ɪɚɫɯɨɠɞɟɧɢɹ, ɩɨɝɥɨɳɟɧɢɹ ɢ ɬ.ɞ.). Ⱦɥɹ ɷɬɨɝɨ ɡɚɞɚɟɬɫɹ
ɜɪɟɦɟɧɧɨɟ ɨɤɧɨ ɪɟɝɭɥɢɪɨɜɤɢ ɬɪɚɫɫ (ɪɢɫ. 4 ):
TSTART – ɧɚɱɚɥɶɧɨɟ ɜɪɟɦɹ,
TEND - ɤɨɧɟɱɧɨɟ ɜɪɟɦɹ,
CHANGE – ɚɦɩɥɢɬɭɞɧɵɣ ɭɪɨɜɟɧɶ.
ȿɫɥɢ ɢɡɜɟɫɬɧɚ ɚɩɪɢɨɪɧɚɹ ɫɤɨɪɨɫɬɧɚɹ ɤɪɢɜɚɹ ɞɥɹ ɞɚɧɧɨɝɨ ɪɚɣɨɧɚ, ɬɨ
ɢɦɟɟɬɫɹ ɜɨɡɦɨɠɧɨɫɬɶ ɢɫɩɨɥɶɡɨɜɚɧɢɹ ɩɪɨɰɟɞɭɪɵ GAIN ɫ ɷɬɨɣ ɫɤɨɪɨɫɬɧɨɣ
ɤɪɢɜɨɣ, ɱɬɨ ɩɨɡɜɨɥɢɬ ɛɨɥɟɟ ɬɨɱɧɨ ɜɨɫɫɬɚɧɚɜɥɢɜɚɬɶ ɚɦɩɥɢɬɭɞɵ ɬɪɚɫɫ.
AGC – (automatic gain control) ɩɪɨɝɪɚɦɦɚ ɚɜɬɨɦɚɬɢɱɟɫɤɨɣ ɪɟɝɭɥɢɪɨɜɤɢ
ɚɦɩɥɢɬɭɞ, ɫɭɬɶ ɜ ɤɨɬɨɪɨɣ ɜ ɫɥɟɞɭɸɳɟɦ: ɜ ɡɚɞɚɧɧɨɦ ɨɤɧɟ N ɪɚɫɫɱɢɬɵɜɚɟɬɫɹ
ɫɪɟɞɧɟɟ ɡɧɚɱɟɧɢɟ ɚɦɩɥɢɬɭɞ F. Ⱦɚɥɟɟ ɜɵɱɢɫɥɹɟɬɫɹ ɧɨɪɦɢɪɨɜɨɱɧɵɣ
ɤɨɷɮɮɢɰɢɟɧɬ: K= S/F, ɝɞɟ S - ɫɪɟɞɧɢɣ ɚɦɩɥɢɬɭɞɧɵɣ ɭɪɨɜɟɧɶ, ɤ ɤɨɬɨɪɨɦɭ
ɩɪɢɜɨɞɢɬɫɹ ɬɪɚɫɫɚ. Ⱦɚɥɟɟ 1 ɨɬɫɱɟɬ ɬɪɚɫɫɵ, ɨɬɧɨɫɹɳɢɣɫɹ ɤ ɫɟɪɟɞɢɧɟ ɨɤɧɚ,
ɭɦɧɨɠɚɟɬɫɹ ɧɚ ɧɨɪɦɢɪɨɜɨɱɧɵɣ ɤɨɷɮɮɢɰɢɟɧɬ. Ɂɚɬɟɦ ɨɤɧɨ ɫɞɜɢɝɚɟɬɫɹ ɧɚ 1
ɨɬɫɱɟɬ ɜɩɪɚɜɨ ɢ ɜɫɹ ɩɪɨɰɟɞɭɪɚ ɩɨɜɬɨɪɹɟɬɫɹ ɢ ɧɨɪɦɢɪɭɟɬɫɹ ɫɥɟɞɭɸɳɢɣ
ɨɬɫɱɟɬ ɬɪɚɫɫɵ. Ⱥɧɚɥɨɝɢɱɧɨ ɧɨɪɦɢɪɭɸɬɫɹ ɜɫɟ ɨɬɫɱɟɬɵ ɬɪɚɫɫɵ. Ⱦɥɹ ɨɬɫɱɟɬɨɜ
ɜ ɧɚɱɚɥɟ ɢ ɤɨɧɰɟ ɬɪɚɫɫɵ ɢɫɩɨɥɶɡɭɸɬɫɹ ɫɨɨɬɜɟɬɫɬɜɟɧɧɨ ɩɟɪɜɵɣ ɢ ɩɨɫɥɟɞɧɢɣ