Skip to main content

Table 1 Estimated process noise values using actual data at G04, G10, G15 and G19

From: Development of a kinematic GNSS-Acoustic positioning method based on a state-space model

Site name

Date

Laterally stratified SSS (s/s1/2)

Horizontally gradient SSS (s/s1/2)

σ_NTD

σ_NTD

σ_G(EW)

σ_G(NS)

G04

September 22, 2012

2.07 × 10−3

2.06 × 10−3

1.87 × 10−3

2.10 × 10−3

G04

August 12, 2013

2.05 × 10−3

1.79 × 10−3

1.77 × 10−3

1.69 × 10−3

G04

November 4, 2013

1.61 × 10−3

1.61 × 10−3

2.05 × 10−3

2.17 × 10−3

G04

March 7, 2015

1.73 × 10−3

1.74 × 10−3

1.35 × 10−3

1.41 × 10−3

G04

November 3, 2015

1.50 × 10−3

1.50 × 10−3

1.59 × 10−3

1.88 × 10−3

G04

May 14, 2016

2.66 × 10−3

2.58 × 10−3

1.91 × 10−3

2.08 × 10−3

G10

September 13, 2012

1.85 × 10−3

1.87 × 10−3

2.15 × 10−3

1.72 × 10−3

G10

November 29, 2012

2.98 × 10−3

2.42 × 10−3

2.19 × 10−3

1.86 × 10−3

G10

July 29, 2013

2.04 × 10−3

1.62 × 10−3

1.81 × 10−3

1.66 × 10−3

G10

March 4, 2014

2.37 × 10−3

2.28 × 10−3

2.22 × 10−3

2.48 × 10−3

G10

September 20, 2014

1.69 × 10−3

1.67 × 10−3

1.74 × 10−3

1.74 × 10−3

G10

November 20, 2015

1.77 × 10−3

1.74 × 10−3

2.33 × 10−3

2.41E−03

G10

May 20, 2016

2.11 × 10−3

2.02 × 10−3

2.42 × 10−3

2.18 × 10−3

G15

March 1, 2014

1.88 × 10−3

1.85 × 10−3

1.67 × 10−3

1.42 × 10−3

G15

November 9, 2015

1.81 × 10−3

1.67 × 10−3

2.11 × 10−3

1.94 × 10−3

G15

May 7, 2016

1.85 × 10−3

1.57 × 10−3

1.85 × 10−3

1.63 × 10−3

G19

September 6, 2012

2.33 × 10−3

2.09 × 10−3

2.19 × 10−3

2.26 × 10−3

G19

July 25, 2013

2.05 × 10−3

1.86 × 10−3

1.97 × 10−3

1.82 × 10−3

G19

February 26, 2014

3.01 × 10−3

3.00 × 10−3

1.80 × 10−3

1.71 × 10−3

G19

February 28, 2015

2.05 × 10−3

1.99 × 10−3

1.62 × 10−3

1.82 × 10−3

G19

November 15, 2015

2.19 × 10−3

2.14 × 10−3

2.15 × 10−3

1.90 × 10−3

G19

May 2, 2016

1.70 × 10−3

1.65 × 10−3

1.68 × 10−3

1.89 × 10−3

Average

2.06 × 10−3

1.94 × 10−3

1.93 × 10−3

1.90 × 10−3

Standard deviation

0.40 × 10−3

0.36 × 10−3

0.26 × 10−3

0.28 × 10−3

  1. The estimated process noise values are shown, and their units are all s/s1/2. The process noise values for NTD are shown in the both cases of the laterally stratified SSS (column 3) and the horizontally gradient SSS (column 4). The process noise values for underwater delay gradients in east–west and north–south components are shown in the case of horizontal gradient SSS (columns 5 and 6, respectively)