更改了声线计算方式，合理分配了角度和声线进行并行运算。
这个提交包含在：
+81
-37
@@ -3,7 +3,9 @@ from env import Pos, Source, Dom, cInt, SSPraw, SSP, HS, BotBndry, TopBndry, Bnd
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from os import system
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import numpy as np
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from config import AtBinPath
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from multiprocessing import Pool
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from scipy.stats import norm
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import math
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def write_ssp(sspfile, ssp, bathm, NZmax):
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if sspfile[-3:] != 'ssp':
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@@ -33,7 +35,9 @@ def write_bathy(btyfile, bathm):
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f.write(' ' + str(bathm.r[row]) + ' ' + str(bathm.d[row]) + '\r\n')
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return
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def call_Bellhop_p(filename):
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system(AtBinPath + "/bellhop " + filename)
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def calZmax(ssp):
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d = np.array([], dtype=int)
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for it in range(len(ssp)):
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@@ -96,20 +100,31 @@ def call_Bellhop(freq, sd, rd, bathm, ssp, sed, base):
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bdy = Bndry(top, bottom)
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# Beam params
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run_type = 'C' # incoherently sum beams, see AT docs for more info
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nbeams = 3000
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alpha = np.linspace(-45, 45, 2) # min and max launch angle -20 degrees to 20 degrees
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NAlphaRange = 12
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Alpha = alphadiv(NAlphaRange,Rmax) # min and max launch angle -20 degrees to 20 degrees
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totalBeams = beamsnumber(freq, Rmax, max(bathm.r))
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box = Box(Zmax, max(bathm.r)) # bound the region you let the beams go, depth in meters and range in km
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deltas = 0 # length step of ray trace, 0 means automatically choose
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beam = Beam(RunType=run_type, Nbeams=nbeams, alpha=alpha, box=box, deltas=deltas) # package
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Filenames = []
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for iAlphaRange in range(len(Alpha) - 1):
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alpha = np.array([Alpha[iAlphaRange], Alpha[iAlphaRange + 1]])
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nbeams = int(totalBeams * (alpha[1] - alpha[0]) / 180)
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# Write *.env file
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write_env(filename + '.env', 'BELLHOP', 'Pekeris profile', freq, sspB, bdy, pos, beam, cInt, Rmax)
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write_ssp(filename, ssp, bathm, NZmax)
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write_bathy(filename, bathm)
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beam = Beam(RunType=run_type, Nbeams=nbeams, alpha=alpha, box=box, deltas=deltas) # package
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filenameI = filename + str(iAlphaRange)
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write_env(filenameI + '.env', 'BELLHOP', 'Pekeris profile', freq, sspB, bdy, pos, beam, cInt, Rmax)
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write_ssp(filenameI, ssp, bathm, NZmax)
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write_bathy(filenameI, bathm)
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Filenames.append(filenameI)
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pool = Pool(NAlphaRange)
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pool.map(call_Bellhop_p, Filenames)
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system(AtBinPath + "/bellhop " + filename)
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# Read sound field
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[x, x, x, x, Pos1, pressure] = read_shd(filename + '.shd')
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[x, x, x, x, Pos1, pressure] = read_shd(filename + '0.shd')
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for iAlphaRange in range(NAlphaRange - 1):
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[x, x, x, x, Pos1, pressure1] = read_shd(filename + str(iAlphaRange) + '.shd')
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pressure = pressure + pressure1
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TL = -10 * np.log10(np.square(np.abs(pressure))) # Transmission Loss
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return Pos1, TL
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@@ -197,32 +212,61 @@ def find_cvgcRays(rays_total):
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Rays.append(ray)
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return Rays
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def alphadiv(NalphaRange, Rmax):
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angle = [-90, 90]
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if Rmax > 100 and Rmax <= 1000:
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sigma = 25
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elif Rmax > 1000:
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sigma = 15
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else:
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sigma = 40
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for i in range(1, NalphaRange):
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angle.append(norm.ppf(i / NalphaRange, loc=0, scale=sigma))
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angle.sort()
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return angle
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def beamsnumber(freq, Rmax, depth):
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if Rmax > 700:
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nbeams = max(int(0.01 * Rmax * 1000 * freq / 1500), 300)
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elif Rmax > 300 and Rmax <= 700:
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nbeams = max(int(0.05 * Rmax * 1000 * freq / 1500), 300)
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elif Rmax > 100 and Rmax <= 300:
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nbeams = max(int(0.1 * Rmax * 1000 * freq / 1500), 300)
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else:
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nbeams = max(int(0.3 * Rmax * 1000 * freq / 1500), 300)
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d_theta_recommended = math.atan(depth / (10.0 * Rmax * 1000))
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nbeams = max(int(math.pi / d_theta_recommended), nbeams)
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return nbeams
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# if __name__=="__main__":
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''' ********************************************** '''
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''' ******************** Test ******************** '''
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# freq = 25 # Frequency
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# sd = np.array([10.0]) # Source depth
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# rd = np.linspace(0, 4000, 401) # Receiving depth
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# # 定义坐标
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# lat = 19.00
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# lon = 116.00
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# # 定义时间段
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# timeIndex = db.timeDict['Annual']
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# # 创建类
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# data = db.DataBase()
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# # 设置时间段
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# data.set_timePeriod(timeIndex)
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''' ********************************************** '''
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''' ******************** Test ******************** '''
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# freq = 25 # Frequency
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# sd = np.array([10.0]) # Source depth
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# rd = np.linspace(0, 4000, 401) # Receiving depth
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# # 定义坐标
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# lat = 19.00
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# lon = 116.00
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# # 定义时间段
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# timeIndex = db.timeDict['Annual']
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# # 创建类
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# data = db.DataBase()
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# # 设置时间段
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# data.set_timePeriod(timeIndex)
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# [bathm, ssp, sed, base] = GetEnv(data, freq, Coord(lon, lat), R=100, azi=90)
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# [Pos, TL] = call_Bellhop(freq, sd, rd, bathm, ssp, sed, base)
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# [bathm, ssp, sed, base] = GetEnv(data, freq, Coord(lon, lat), R=100, azi=90)
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# [Pos, TL] = call_Bellhop(freq, sd, rd, bathm, ssp, sed, base)
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# #[x, x, x, x, Pos, pressure] = read_shd('envB.shd')
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# #TL = -10 * np.log10(np.square(np.abs(pressure))) # Transmission Loss
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# # Plot
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# plt.pcolor(Pos.r.range, Pos.r.depth, TL[0,0,:,:], vmin=40, vmax=130,cmap='jet_r', shading='auto')
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# plt.xlabel("Range/m")
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# plt.ylabel("Depth/m")
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# plt.gca().invert_yaxis()
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# plt.colorbar()
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# plt.plot(bathm.r*1000, bathm.d, color='k')
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# plt.show()
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# #[x, x, x, x, Pos, pressure] = read_shd('envB.shd')
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# #TL = -10 * np.log10(np.square(np.abs(pressure))) # Transmission Loss
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# # Plot
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# plt.pcolor(Pos.r.range, Pos.r.depth, TL[0,0,:,:], vmin=40, vmax=130,cmap='jet_r', shading='auto')
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# plt.xlabel("Range/m")
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# plt.ylabel("Depth/m")
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# plt.gca().invert_yaxis()
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# plt.colorbar()
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# plt.plot(bathm.r*1000, bathm.d, color='k')
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# plt.show()
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