Thai Duong 0001 Nikhil Das Michael C. Yip Nikolay Atanasov 0001 Autonomous Navigation in Unknown Environments using Sparse Kernel-based Occupancy Mapping. 9666-9672 2020 ICRA https://doi.org/10.1109/ICRA40945.2020.9197412 conf/icra/2020 db/conf/icra/icra2020.html#DuongDYA20