feat(step8): 新增水色指数反演模块 waterindex_inversion + CSV 公式驱动架构

src/utils/generate_pure_water_csv.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+生成纯水 IOPs（吸收与散射系数）插值表
+参考 Pope & Fry (1997) 吸收系数 + Morel & Luukko (1974) 后向散射系数
+"""
+
+import numpy as np
+import pandas as pd
+import os
+
+
+def generate_csv():
+    anchor_points = {
+        400: [0.017, 0.0076], 440: [0.015, 0.0049], 500: [0.026, 0.0029],
+        555: [0.060, 0.0019], 600: [0.245, 0.0014], 650: [0.340, 0.0010],
+        709: [0.735, 0.0007], 750: [2.470, 0.0005], 800: [2.070, 0.0004]
+    }
+    wl_anchors = list(anchor_points.keys())
+    aw_anchors = [v[0] for v in anchor_points.values()]
+    bbw_anchors = [v[1] for v in anchor_points.values()]
+
+    wavelengths = np.arange(400, 801, 1)
+    aw_interp = np.interp(wavelengths, wl_anchors, aw_anchors)
+    bbw_interp = np.interp(wavelengths, wl_anchors, bbw_anchors)
+
+    df = pd.DataFrame({'Wavelength': wavelengths, 'aw': aw_interp, 'bbw': bbw_interp})
+    save_path = os.path.join(os.path.dirname(__file__), 'pure_water_iops.csv')
+    df.to_csv(save_path, index=False)
+    print(f"纯水 IOPs 表已生成: {save_path}")
+
+
+if __name__ == '__main__':
+    generate_csv()