Accuracy optimization and assessment of GF-7 satellite multi-source remote sensing data

Item	dH1		dH2		dH3		N
Item	ME/m	RMSE/m	ME/m	RMSE/m	ME/m	RMSE/m	N
Total	0.872	2.208	0.886	2.243	0.913	2.274	79
m_ECP_Flag=1	0.327	0.657	0.263	0.583	0.270	0.566	26
m_ECP_Flag=2	0.315	0.392	0.321	0.401	0.378	0.460	26
m_ECP_Flag=other	1.934	3.701	2.040	3.796	2.056	3.847	27

Table 2. Statistical table of planar error of footprint image
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Table 2. Statistical table of planar error of footprint image
Item ME/m RMSE/m MAX/m MIN/m
East-West 3.536 4.347 8.271 −1.605
North-South −0.859 2.250 5.795 −5.163
Plane 4.363 4.895 8.523 0.569

Table 3. Plane-elevation accuracy evaluation of uncontrolled DSM and DOM
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Table 3. Plane-elevation accuracy evaluation of uncontrolled DSM and DOM
Item ME/m RMSE/m Abs MAX/m Abs MIN/m
Elevation −4.268 4.518 6.921 1.031
Plane 13.606 13.626 15.962 12.049

Table 4. Statistical table preliminary evaluation of uncontrolled DSM by laser data
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Table 4. Statistical table preliminary evaluation of uncontrolled DSM by laser data
Item ME/m RMSE/m Abs MAX/m Abs MIN/m Skewness/m
Statistical result −3.878 4.085 6.062 0.246 50
Item PN PME/m NN NME/m N
Statistical result 1 1.272 49 −3.984 50

Table 5. Statistical table of accuracy evaluation by laser elevation optimization
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Table 5. Statistical table of accuracy evaluation by laser elevation optimization
Item ME/m RMSE/m Abs MAX/m Abs MIN/m
Skewness −0.389 1.549 3.043 0.117
Median −0.272 1.508 2.965 0.001
Linear polynomial −0.320 1.351 2.937 0.028
Quadratic polynomial −0.610 1.751 3.208 0.177

Table 6. Statistical table of accuracy evaluation by footprint-laser plane-elevation optimization

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Table 6. Statistical table of accuracy evaluation by footprint-laser plane-elevation optimization

Item	ME/m	RMSE/m	Abs MAX/m	Abs MIN/m
Plane	5.341	5.495	8.244	3.388
Elevation of plane optimization	−4.334	4.600	−1.031	−6.921
Elevation of skewness optimization	−0.391	1.273	2.416	0.034
Elevation of median optimization	−0.305	1.250	2.330	0.009
Elevation of linear polynomial optimization	−0.335	1.131	1.751	0.004
Elevation of quadratic polynomial optimization	−0.540	1.427	2.408	0.054

Table 7. Statistical table of accuracy evaluation by field-laser plane-elevation optimization

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Table 7. Statistical table of accuracy evaluation by field-laser plane-elevation optimization

Item	ME/m	RMSE/m	Abs MAX/m	Abs MIN/m
Plane	3.174	3.299	4.920	1.669
Elevation of plane optimization	−4.249	4.432	6.351	1.943
Elevation of skewness optimization	−0.338	1.307	2.441	0.047
Elevation of median optimization	−0.291	1.295	2.393	0.095
Elevation of linear polynomial optimization	−0.279	1.160	1.955	0.0025
Elevation of quadratic polynomial optimization	−0.484	1.429	2.269	0.002

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Liuru Hu, Xinming Tang, Zhi Zhang, Guoyuan Li, Jiyi Chen, Huaiqi Tian, Shuaitai Zhang, Junping Qiao, Xin Li. Accuracy optimization and assessment of GF-7 satellite multi-source remote sensing data[J]. Infrared and Laser Engineering, 2022, 51(6): 20210458

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Paper Information

Category: Lasers & Laser optics

Received: Jul. 6, 2021

Accepted: Nov. 2, 2021

Published Online: Dec. 20, 2022

The Author Email:

DOI:10.3788/IRLA20210458

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Statistical table of laser spot accuracy detection classification

Table 1. Statistical table of laser spot accuracy detection classification

Table 2. Statistical table of planar error of footprint image

Table 2. Statistical table of planar error of footprint image

Table 3. Plane-elevation accuracy evaluation of uncontrolled DSM and DOM

Table 3. Plane-elevation accuracy evaluation of uncontrolled DSM and DOM

Table 4. Statistical table preliminary evaluation of uncontrolled DSM by laser data

Table 4. Statistical table preliminary evaluation of uncontrolled DSM by laser data

Table 5. Statistical table of accuracy evaluation by laser elevation optimization

Table 5. Statistical table of accuracy evaluation by laser elevation optimization

Table 6. Statistical table of accuracy evaluation by footprint-laser plane-elevation optimization

Table 6. Statistical table of accuracy evaluation by footprint-laser plane-elevation optimization

Table 7. Statistical table of accuracy evaluation by field-laser plane-elevation optimization

Table 7. Statistical table of accuracy evaluation by field-laser plane-elevation optimization