State observer

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State observer

Quality:

State observer - system that provides an estimate of the internal state of a given real system, from measurements of the input and output of the real system. Article “State observer” in English Wikipedia has 46.1 points for quality (as of July 1, 2025). The article contains 25 references and 12 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

In June 2025 the article “State observer” was edited by 1 authors in English Wikipedia and written by 1 authors in all languages.

Since the creation of article “State observer”, its content was written by 67 registered users of English Wikipedia and edited by 237 registered Wikipedia users in all languages.

The article is cited 50 times in English Wikipedia and cited 333 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #34604 in January 2021
  • Global: #60209 in February 2007

The highest popularity rank from 2008:

  • Local (English): #209263 in December 2014
  • Global: #200273 in December 2014

There are 11 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
State observer
46.0799
2Chinese (zh)
狀態觀測器
44.0798
3German (de)
Beobachter (Regelungstechnik)
31.0656
4French (fr)
Observateur d'état
23.6431
5Arabic (ar)
ملاحظ الحالة
22.1269
6Russian (ru)
Наблюдатель (динамические системы)
11.7533
7Polish (pl)
Obserwator stanu
11.0027
8Italian (it)
Osservatore dello stato
10.4319
9Hindi (hi)
अवस्था प्रेक्षक
4.7539
10Persian (fa)
رؤیت‌کننده حالت
3.8266
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "State observer" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
State observer
674 637
2German (de)
Beobachter (Regelungstechnik)
274 955
3French (fr)
Observateur d'état
118 316
4Polish (pl)
Obserwator stanu
59 688
5Italian (it)
Osservatore dello stato
53 225
6Russian (ru)
Наблюдатель (динамические системы)
41 273
7Japanese (ja)
状態観測器
27 186
8Chinese (zh)
狀態觀測器
26 255
9Arabic (ar)
ملاحظ الحالة
8 752
10Persian (fa)
رؤیت‌کننده حالت
2 497
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "State observer" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
State observer
2 408
2German (de)
Beobachter (Regelungstechnik)
554
3French (fr)
Observateur d'état
216
4Chinese (zh)
狀態觀測器
175
5Polish (pl)
Obserwator stanu
164
6Italian (it)
Osservatore dello stato
143
7Russian (ru)
Наблюдатель (динамические системы)
120
8Japanese (ja)
状態観測器
59
9Arabic (ar)
ملاحظ الحالة
11
10Persian (fa)
رؤیت‌کننده حالت
7
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "State observer" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
State observer
67
2German (de)
Beobachter (Regelungstechnik)
59
3French (fr)
Observateur d'état
38
4Italian (it)
Osservatore dello stato
23
5Russian (ru)
Наблюдатель (динамические системы)
22
6Arabic (ar)
ملاحظ الحالة
7
7Polish (pl)
Obserwator stanu
7
8Hindi (hi)
अवस्था प्रेक्षक
5
9Japanese (ja)
状態観測器
4
10Chinese (zh)
狀態觀測器
3
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "State observer" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
State observer
1
2Arabic (ar)
ملاحظ الحالة
0
3German (de)
Beobachter (Regelungstechnik)
0
4Persian (fa)
رؤیت‌کننده حالت
0
5French (fr)
Observateur d'état
0
6Hindi (hi)
अवस्था प्रेक्षक
0
7Italian (it)
Osservatore dello stato
0
8Japanese (ja)
状態観測器
0
9Polish (pl)
Obserwator stanu
0
10Russian (ru)
Наблюдатель (динамические системы)
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "State observer" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Persian (fa)
رؤیت‌کننده حالت
61
2French (fr)
Observateur d'état
51
3English (en)
State observer
50
4Chinese (zh)
狀態觀測器
42
5Polish (pl)
Obserwator stanu
37
6Japanese (ja)
状態観測器
29
7German (de)
Beobachter (Regelungstechnik)
23
8Russian (ru)
Наблюдатель (динамические системы)
15
9Italian (it)
Osservatore dello stato
14
10Arabic (ar)
ملاحظ الحالة
10
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
ملاحظ الحالة
deGerman
Beobachter (Regelungstechnik)
enEnglish
State observer
faPersian
رؤیت‌کننده حالت
frFrench
Observateur d'état
hiHindi
अवस्था प्रेक्षक
itItalian
Osservatore dello stato
jaJapanese
状態観測器
plPolish
Obserwator stanu
ruRussian
Наблюдатель (динамические системы)
zhChinese
狀態觀測器

Popularity rank trends

Best Rank English:
#209263
12.2014
Global:
#200273
12.2014

AI rank trends

Best Rank English:
#34604
01.2021
Global:
#60209
02.2007

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on State observer from Wikipedia articles about David Luenberger, State-space representation, Observability, Kalman filter and Beobachtbarkeit. Whereas reading the article about State observer people most often go to Wikipedia articles on Kalman filter, David Luenberger, Observability, Sliding mode control and Moving horizon estimation.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

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About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information