Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1
AbstractGlobal Navigation Satellite System (GNSS) signals can be exploited to remotely sense atmosphere and land and ocean surface to retrieve a range of geophysical parameters. This paper proposes two new methods, termed as power-summation of differential Delay-Doppler Maps (PS-D) and pixel-number of differential Delay-Doppler Maps (PN-D), to distinguish between sea ice and sea water using differential Delay-Doppler Maps (dDDMs). PS-D and PN-D make use of power-summation and pixel-number of dDDMs, respectively, to measure the degree of difference between two DDMs so as to determine the transition state (water-water, water-ice, ice-ice and ice-water) and hence ice and water are detected. Moreover, an adaptive incoherent averaging of DDMs is employed to improve the computational efficiency. A large number of DDMs recorded by UK TechDemoSat-1 (TDS-1) over the Arctic region are used to test the proposed sea ice detection methods. Through evaluating against ground-truth measurements from the Ocean Sea Ice SAF, the proposed PS-D and PN-D methods achieve a probability of detection of 99.72% and 99.69% respectively, while the probability of false detection is 0.28% and 0.31% respectively. View Full-Text
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Zhu, Y.; Yu, K.; Zou, J.; Wickert, J. Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1. Sensors 2017, 17, 1614.
Zhu Y, Yu K, Zou J, Wickert J. Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1. Sensors. 2017; 17(7):1614.Chicago/Turabian Style
Zhu, Yongchao; Yu, Kegen; Zou, Jingui; Wickert, Jens. 2017. "Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1." Sensors 17, no. 7: 1614.
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