Geoswath多波束系统及其在航道测量中的应用

介绍Geoswath多波束系统的基本组成和相干声纳的工作原理，与常规多波束系统相比，该系统具有数据密度大、水深分辨率高、条幅中间数据密度相对较低等特点。系统参数测试中，使用交叉点法获取纵倾偏差和艏摇偏差的方法，提高参数测试的精度。在经过各种校准后，对水深变化在几米至30多米的航道进行测量，在局部地形图中清楚地显示水深相对高差约20cm，大小1～2m的地形起伏，能较为清楚地显示航道经过不同形式改造的痕迹。

The Geoswath multibeam bathymetric system and its application in sea route survey

The paper introduces the assembled parts and interferometric sonar principle of the Geoswath swath bathymetry system. Comparing with the beam-forming multibeam system, the Geoswath system has much more data density ,high depth resolution, but has less data under the transducers. To find the biases on the intersection got more accurate pitch offset and yaw offset. After the calibrations, a searoute was surveyed by the Geoswath system. The final map clearly showed the small topography , which is 20 centimeters high and 1-2 meters wide. The map can also show the different changes.