A navigation mark tide level observation device and observation method

Abstract

The invention provides a navigation mark tidal level observation device and observation method, including a navigation mark body component, a self-power supply system and a data processing system. The shape of the navigation mark body component is consistent with the shape of a standard navigation mark, so that the observation device has a higher survival probability It is safer to be damaged by ship collisions and fishermen. By setting up a self-power supply system, the continuous system power supply requirements can be realized. Compared with the reverse echo equipment deployed on the seabed, the self-power supply system on the navigation mark can meet the high-frequency observation requirements. , the data collected by the buoy body component is transmitted to the land client through the Beidou satellite and then analyzed and saved through the data processing system. Compared with the reverse echo equipment deployed on the seabed, the observation device not only has complete local data records The observation data is sent by communication, and the data is more secure. The small-range depth-sounding sensor is used to improve the accuracy of distance measurement and meet the accuracy requirement of 1cm for tidal observation.

Description

technical field [0001] The invention relates to the technical field of ocean observation, in particular to an observation device and an observation method for the tide level of a navigation mark. Background technique [0002] It is essential for tide level correction for ocean bathymetry. In the coastal waters, due to the different topography and coastline shape, the tidal properties are constantly changing, especially in the Bohai Sea. There is a more significant change in the nature of the internal tides. In other words, the controllable distance of a tide gauge point is very limited, sometimes only tens of kilometers. In this case, when tidal observations cannot be made away from the coast, “steps” will appear in the bathymetry data (figure) (that is, there is a significant difference in bathymetry between the two survey areas). For the above situation, we have no solution and related technical means for a long time. [0003] At present, although the GNSS (satellite a...

AI Technical Summary

Problems solved by technology

[0003] At present, although the GNSS (satellite altitude) method can be used for tidal observation far from the coast, there are several problems in the following aspects. First, the price of GNSS observation equipment is relatively high, and it depends on the GPS in the United States; second, the observation data requires more technology Processing, the current accuracy after processing is about 5cm, which is lower than the standard requirement for tide level observation (1cm), so this technology is not very practical

The second is the "reverse echo" observation equipment arranged on the seabed. Although the observation accuracy of this equipment can meet the standard requirements for tide level observation, there are the following problems when it is deployed on the seabed for several months. First, it is easy to be dragged away by fishing nets. The safety is not guaranteed; the second is that it is difficult to maintain the high-frequency (1 time / minute) demand for long-term continuous observation by relying on battery power

[0004] In order to solve the above problems, the method of transforming standard aids to navigation is adopted to realize the observation of water depth and tide level changes, which solves a series of problems such as unsafe, low observation accuracy, limited power supply, and low frequency of observation records, and provides a safe way for deep sea depth observation. Practical and cheap observation technology means

Images