ArticleParKftrack

Parameters of Kftrack

Parameter	Usage	Initial value	Unit
u	"advection" component of movement; northward component of directed movement	0	nm/day
v	"advection" component of movement; eastward component of directed movement	0	nm/day
D	"diffusion" component of movement. A measure of the variability in movement	100	nm^2/day
bx	systematic error (or bias) in the estimation of position (longitude)	0	degree
by	systematic error (or bias) in the estimation of position (latitude)	0	degree
sx	random error in the estimation of position (longitude)	0.5	degree
sy	random error in the estimation of position (latitude)	1.5	degree
a0	upper bound for latitude variance (keep the tagged animal in this planet). Used in "solstice" variance structure, related to how the latitude estimation error varies around the equinox.	0.0001	degree
b0	the number of days prior to the equinox where the latitude error is maximal. Used in "solstice" variance structure, related to how the latitude estimation error varies around the equinox.	0	day

Other options

Option	Usage	Initial value	Unit
var.struct	3 different assumptions about variability in the latitude estimation error over time: 'uniform','solstice','daily'	See R help, ?kftrack	N/A