Shore-based sea clutter observation method

Abstract

The invention discloses a shore-based sea clutter observation method which comprises the following steps: step 1, primarily selecting a preferred observation direction; step 2, determining a maximum observable downward depression angle interval and a corresponding pulse width; step 3, grading different sea surface states to perform parameter configuration; step 4, performing test task classification planning and key parameter switching; step 5, executing the test task according to different modes; and step 6, periodically updating part of parameters; the shore-based sea clutter observation method is provided for the high-resolution narrow-beam radar on the basis of long-term accumulated sea clutter research experience, and through reasonable observation parameter configuration and test task planning, the parameter selection blindness in sea clutter multi-parameter comparison observation is reduced, the angle parameter setting problem caused by too narrow radar beams is solved, and themethod can be used as a shore-based sea clutter observation method reference.

Description

technical field [0001] The invention belongs to the field of radar sea clutter observation methods, in particular to a sea clutter observation method based on shore-based high-resolution narrow beam radar in the field. Background technique [0002] In the work of sea surveillance and detection, the radar system will inevitably be affected by the random signal of the radar echo from the sea surface, that is, the sea clutter. Clutter change characteristics. However, the operating modes and radar parameters vary widely under different systems. In addition, the state of the ocean surface is complex and changeable. Changes in various parameters will cause changes in wave characteristics, resulting in different statistical characteristics of sea clutter. In order to more comprehensively and accurately grasp the changing characteristics of sea clutter characteristics, it is necessary to adopt effective observation methods according to the characteristics of the radar system to obt...

AI Technical Summary

Problems solved by technology

If all kinds of parameter combinations are covered, first, it takes too long, and the random and changeable ocean parameters will lead to insufficient data accumulation under the same parameters in the short term; second, too many test combinations will blur the focus and lead to comparative analysis of clutter characteristics The blindness of time affects the efficiency of analysis

[0004] At present, some domestic and foreign scientific research institutions and institutes have disclosed some relevant sea clutter tests, but generally do not give the details of the parameter configuration in the actual observation process, and mostly present the final test analysis results and corresponding parameters

However, due to the characteristics of each radar system, there will be some practical problems to be solved. For high-resolution narrow-beam radars, the grazing angle covered by the depression angle of a single beam center is very limited. On the basis of various combinations of other parameters, if If the angle is switched too frequently, the test tasks will be multiplied, so it is necessary to design the observation angle reasonably

Images