High Standard Farmland Construction Based on Multi-source Spatio-temporal Point Cloud Fusion Technology

doi:10.13304/j.nykjdb.2023.0228

Abstract

Abstract:

In the preliminary planning of high-standard farmland construction for large range and complex terrain area， there are some problems， such as incomplete， different size， scattered， irregular， inaccurate computation of the earthwork volumes， too long construction period etc. The multi-source temporal-spatial point cloud fusion technology was proposed based on airborne laser radar， high-definition digital camera， which made full use of the advantages of high-precision digital elevation model obtained by airborne laser radar data， strong currency and high resolution of digital orthograph model， and comprehensive large-scale topographic elements， which provided precise quantitative front-end basic data for high-standard farmland construction， and realized the rapid planning and accurate implementation of high-standard farmland construction projects. The results showed that the multi-source temporal-spatial point cloud fusion technology could be effectively applied to the preliminary construction of high standard farmland construction. It reduced the workload of field exploration. It could not only improve work efficiency and reduce costs， but also had great potential in reducing data missing and errors.

Key words: multi-source temporal-spatial, airborne lidar, high standard farmland, preliminary construction

摘要：

为解决在高标准农田建设规划中存在的田间道路不完整，部分田块大小不一、散乱、不规则，农田挖填方量评估不准和建设工期过长等问题，基于多源时空点云融合技术，提出了一种多源数据融合技术，该技术结合了机载激光雷达、高清数码相机等多种数据，利用机载激光雷达获取的高精度数字高程模型和数字正射影像获取现势性强且分辨率高的影像数据，并结合大比例尺地形要素数据，为高标准农田建设提供精确量化的前端基础数据，实现高标准农田建设工程的快速规划和精准实施。结果表明，该多源时空点云融合技术能够有效地应用于高标准农田建设前期规划，不仅可以提高工作效率、降低成本，在减少数据缺失和错误方面还具有较大潜力。

关键词: 多源时空, 机载激光雷达, 高标准农田, 前期建设

CLC Number:

Xialing LIU, Zhaoyan CUI, Hang YE, Xiaoqiang WANG, Li ZHENG. High Standard Farmland Construction Based on Multi-source Spatio-temporal Point Cloud Fusion Technology[J]. Journal of Agricultural Science and Technology, 2024, 26(7): 80-92.

刘遐龄, 崔兆岩, 叶航, 王晓强, 郑礼. 基于多源时空点云融合技术的高标准农田建设规划[J]. 中国农业科技导报, 2024, 26(7): 80-92.

Figures/Tables 20

Fig. 1 Overall technical process

Fig. 2 Photography equipment of data acquisition aerial

Table 1 Parameters of aerial photography equipment

名称Name	参数Parameter	值Value	参数Parameter	值Value
飞马V10 Feima V10	尺寸 Size/mm	1 750×4 150×700	最大续航时间 Max-endurance/min	240
飞马V10 Feima V10	飞机起降方式 Methods of aircraft takeoff and landing	全自动垂直起降 Fully automatic vertical take-off and landing	控制距离 Control distance/km	50
DV-LiDAR22	尺寸 Size/mm	216×384×166	扫描角度 Scanning angle/（°）	360
	点频 Point frequency/kHz	50 k~1 500	扫描频率 Scanning frequency/Hz	10~200
	波长 Length of wave/nm	1 550	测距精度 Ranging accuracy/mm	±15
SONY-a7R3	像素 Pixel	7 952×5 304	焦距 Focal length/mm	28
SONY-a7R3	像元大小 Pixel size/μm	4.5

Fig. 3 Flow of data acquisition

Fig. 4 Multi-source data of the study areaNote：The red line represents the section line；dashed circle represents the display area of point cloud data；arrow represents the position of dashed circle.

Fig. 5 Digital orthophoto

Fig. 6 Mountain shadow of digital elevation model

Fig. 7 Grid construction planning

Fig. 8 Planning diagram of production road construction

Fig. 9 Production road construction

Fig. 10 Airborne LiDAR point cloud of the ditch

Fig. 11 Anomaly of ditch in the study area

Fig. 12 Details of ditch

Fig. 13 Plough road slop

Fig. 14 Profile of the plough road slop

Fig. 15 Construction profile of the plough road slop

Fig. 16 Excavation and filling about field under different scheme

Table 2 Amount of excavation and filling under different schemes

方案 Scheme	田块 Field		边坡 Slope		生产道路 Production road		总计 Total
方案 Scheme	挖方量 Excavation volume	填方量 Filling volume	挖方量 Excavation volume	填方量 Filling volume	挖方量 Excavation volume	填方量 Filling volume	挖方量 Excavation volume	填方量 Filling volume
方案1 Scheme 1	65 187	53 750	7 374	1 431	3 626	2 690	76 187	57 871
方案2 Scheme 2	16 207	27 154	11 901	9	3 626	2 690	31 734	29 853
方案3 Scheme 3	39 236	26 883	11 901	9	3 626	2 690	54 763	29 582

Fig. 17 Excavation and filling about side slope under different scheme

Fig. 18 Schematic diagram of excavation and filling about production road under 3 schemes

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