Unmanned aerial vehicle positioning method for forest resource sample-plot survey

Abstract

The invention provides an unmanned aerial vehicle positioning method for forest resource sample-plot survey. The method comprises the following steps of (1), performing controlling on an unmanned aerial vehicle for making the unmanned aerial vehicle fly to a to-be-positioned sample-plot corner pile GPS coordinate position; (2), performing remote controlling on a launching device by a remote control operator, and launching a positioning mark from a position above a sample-plot corner pile to the position next to the sample-plot corner pile; (3), performing real-time transmission of Bluetooth positioning information by a Bluetooth signal positioning device in an inner component of the positioning mark, checking the real-time Bluetooth positioning information transmitted from the positioning mark by means of mobile phone Bluetooth positioning APP software, and planning a route path for searching the positioning mark; (4), after entering a sample plot, searching the positioning mark according to the real-time Bluetooth positioning information, sound and flashing laser transmitted from the positioning mark; and (5), searching the sample-plot corner pile at periphery of the positioning mark. The unmanned aerial vehicle positioning method aims to quickly and conveniently determine position of the sample-plot corner pile.

Description

technical field [0001] The invention relates to a positioning method for an unmanned aerial vehicle for surveying forest resource plots. Background technique [0002] Currently, the first and second types of national forest resources surveys are surveys of fixed plots. In the survey, it is first necessary to locate the fixed survey plots that have been laid out in the lush forest. According to the National Forest Resources Survey Standards, four corner stakes were set at the four corners of the fixed survey plot, and the southwest corner stakes recorded accurate GPS coordinates when the plot was laid out. Therefore, to conduct the first and second types of forest resource surveys, the specific location of the fixed survey sample plot must first be located. To locate the specific location of the fixed survey sample plot, the specific location of the southwest corner post should be located based on the GPS coordinates of the corner post at the southwest corner of the sample pl...

AI Technical Summary

Problems solved by technology

[0003] At present, GPS navigation technology is usually used to find the southwest corner piles of the sample plots. Investigators mainly use the navigation and positioning functions of handheld GPS. However, the corner piles in the southwest corner of the sample plots are not obvious due to the growth of trees and the special environmental factors in the forest area. Including tree canopy, canopy density, terrain conditions, etc., the GPS signal is blocked, so the handheld GPS positioning is not accurate, and it is impossible to quickly and conveniently locate the corner pile in the southwest corner of the plot

At present, widely used positioning instruments include total station, theodolite, handheld GPS, etc. Although these devices can perform effective positioning, they are affected by the shortest line of sight, weak signal, and corner piles being blocked by trees when surveying forest resource plots. On the contrary, it cannot play its role, and it also requires investigators to conduct manual searches, which has brought some troubles to the survey of forest resource sample plots. Due to the needs of investigation and research, rapid positioning is particularly important

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