[3] [3] Ogura N, Hanya T. Nature of ultra-violet absorption of sea water[J]. Nature, 1966, 212(5063): 758.

[4] [4] Zhu X Y, Yu K X, Zhu X F, et al. An improved algorithm for measuring nitrate concentrations in seawater based on deep-ultraviolet spectrophotometry: a case study of the Aoshan bay seawater and western pacific seawater[J]. Sensors, 2021,21(3): 965.

[6] [6] Poornima D, Shanthi R, Ranith R, et al. Application of in-situ sensors (SUNA and thermal logger) in fine tuning the nitrate model of the Bay of Bengal[J]. Remote Sens Appl: Soc Environ,2016, 4: 9–17.

[7] [7] Snazelle T T. Results from laboratory and field testing of nitrate measuring spectrophotometers[R]. Reston, VA: U. S. Geological Survey, 2015: 1–15.

[8] [8] Sakamoto C M, Johnson K S, Coletti L J. Improved algorithm for the computation of nitrate concentrations in seawater using an in situ ultraviolet spectrophotometer[J]. Limnol Oceanogr: Methods,2009, 7(1): 132–143.

[9] [9] Zielinski O, Voβ D, Saworski B, et al. Computation of nitrate concentrations in turbid coastal waters using an in situ ultraviolet spectrophotometer[J]. J Sea Res, 2011, 65(4): 456–460.

[11] [11] Shaw G A, Siegel A M, Model J, et al. Recent progress in short-range ultraviolet communication[J]. Proc SPIE, 2005, 5796:214–225.

[14] [14] Murali A, Kakarla H K, Priyadarshini G M A. Improved design debugging architecture using low power serial communication protocols for signal processing applications[J]. Int J Speech Technol, 2021, 24(2): 291–302.

[16] [16] Nguyen C V, Le Quang T, Vu T N, et al. A non-contact infection screening system using medical radar and Linux-embedded FPGA: implementation and preliminary validation[J]. Inform Med Unlocked, 2019, 16: 100225.