论文部分内容阅读
前言 航标是船舶航行的眼睛,航标的正常工作是确保船舶安全航行的重要因素,为此,航标管理部门日夜坚守岗位,及时对失常航标进行恢复,以保证每座航标处于正常技术状态。 早期我们对航标工作状态的监测,主要是用无线电发射和接收装置,由于设备体积和耗电大,抗干扰性差,监测航标数量受设备和无线电频率的限制及价格太高等原因而未被推广。随后又研究用甚高频无线电话的接收和发射装置对航标灯进行监测,也同样由于抗干扰性差,被监测的航标灯的距离和数量有限,不能对航标碰撞和移位进行监测等原因而未被采纳。 随着现代科学技术的发展,近几年GPS全球定位
Preface Aids to navigation are the eyes of a ship. The normal operation of aids to navigation is an important factor in ensuring the safe navigation of a ship. For this reason, the Aids Administration maintains its position day and night to restore the missing navigation aids in time so as to ensure that each aids is in a normal technical condition. In the early years, our monitoring of the working status of aids to navigation aids was mainly unsuccessful in using radio transmitting and receiving devices due to equipment size and power consumption, poor anti-interference, monitoring of aids to navigation aids due to equipment and radio frequency limitations, and high prices. Subsequently, research was also conducted on the use of receiving and transmitting radiofrequency (VHF) radiotelephone receiving and transmitting devices to monitor aids to beacon lights. Due to such reasons as poor immunity to interference, limited distance and limited number of beacon lights to be monitored, collision and displacement of aids to navigation, etc. Not adopted. With the development of modern science and technology, GPS global positioning in recent years