May 3, 2007 20:59
17 yrs ago
Russian term

изолиния плотности распределения погрешностей места

Russian to English Tech/Engineering Surveying Geodesy/global positioning technology
I have several example sentences:

1) Из теории вероятностей и навигации известно, что средний квадратический эллипс погрешностей определяется как изолиния плотности распределения погрешностей места и существует только при выполнении двух условий.

2) В противном случае средний квадратический эллипс погрешностей не будет соответствовать изолинии плотности распределения погрешностей места, а названная вероятность не будет равна расчетному значению 0,393.

3) В случае определения места по створу и пеленгу (или расстоянию) изолиния плотности распределения погрешностей места представляет собой два параллельных отрезка.

Isoline of position error distribution density? I get the general idea, but I am not sure of the normal word order/phrasing. Thanks!

Discussion

Sergei Tumanov May 3, 2007:
maybe something here will be helpful http://www.mar-it.de/NavGen/final_text3.pdf
Jennifer Guernsey (asker) May 3, 2007:
Sergey, thanks, yes, depending on context I have been using "position fixing" (for the general process) or "position fix" (for a specific instance).
Sergei Tumanov May 3, 2007:
определение места = fix

Proposed translations

13 hrs
Selected

contour of the error probability distribution of position fix

Based on a review of Sergei's suggestion above, it seems to me that the concept is to think in terms of an ellipse whose axes have the length of a multiple of the standard deviation of the probability distribution in each of two orthogonal axes (possibly rotated from original baseline axes). The multiple is determined from the math for a normal distribution, so that e.g. using one SD = 65% in each direction results in 39% joint, and using 2 SDs = 95% -> 90%.

Hence I would lean toward "contour" here rather than "isoline", where the contour is the circumference of the constructed ellipse instead of a line such as on elevation maps.

Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thanks for your help & answers, & Sergey, thank you for the useful reference material."
6 mins

isoline of the density of the allocation of position errors

такая идея
Something went wrong...
25 mins

error density contour

line of constant error density

--------------------------------------------------
Note added at 50 mins (2007-05-03 21:50:03 GMT)
--------------------------------------------------

a couple of formulations:
an error ellipse is an isoline of error density (function)
an error ellipse is a contour along which the error density is constant
Something went wrong...
Term search
  • All of ProZ.com
  • Term search
  • Jobs
  • Forums
  • Multiple search