Technique was first proposed for frequency estimation

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{"type":"standard","title":"Nat Carr","displaytitle":"Nat Carr","namespace":{"id":0,"text":""},"wikibase_item":"Q20810606","titles":{"canonical":"Nat_Carr","normalized":"Nat Carr","display":"Nat Carr"},"pageid":47425263,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Nat_Carr_in_Bank_Alarm_%28cropped%29.jpg/330px-Nat_Carr_in_Bank_Alarm_%28cropped%29.jpg","width":320,"height":410},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/8/83/Nat_Carr_in_Bank_Alarm_%28cropped%29.jpg","width":656,"height":841},"lang":"en","dir":"ltr","revision":"1264180410","tid":"23618d84-bf27-11ef-a8a7-9bb41a51ba5b","timestamp":"2024-12-20T23:07:09Z","description":"American character actor (1886–1944)","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Nat_Carr","revisions":"https://en.wikipedia.org/wiki/Nat_Carr?action=history","edit":"https://en.wikipedia.org/wiki/Nat_Carr?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Nat_Carr"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Nat_Carr","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Nat_Carr","edit":"https://en.m.wikipedia.org/wiki/Nat_Carr?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Nat_Carr"}},"extract":"Nat Carr was an American character actor of the silent and early talking picture eras. During his eighteen-year career, Carr appeared in over 100 films, most of them features.","extract_html":"

Nat Carr was an American character actor of the silent and early talking picture eras. During his eighteen-year career, Carr appeared in over 100 films, most of them features.

"}

{"type":"standard","title":"Robert Rockwell","displaytitle":"Robert Rockwell","namespace":{"id":0,"text":""},"wikibase_item":"Q2320109","titles":{"canonical":"Robert_Rockwell","normalized":"Robert Rockwell","display":"Robert Rockwell"},"pageid":10695782,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Robert_Rockwell.JPG/330px-Robert_Rockwell.JPG","width":320,"height":412},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/5/5e/Robert_Rockwell.JPG","width":681,"height":876},"lang":"en","dir":"ltr","revision":"1280849438","tid":"34127995-02a4-11f0-a543-5d085581c2dc","timestamp":"2025-03-16T20:21:12Z","description":"American actor (1920–2003)","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Robert_Rockwell","revisions":"https://en.wikipedia.org/wiki/Robert_Rockwell?action=history","edit":"https://en.wikipedia.org/wiki/Robert_Rockwell?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Robert_Rockwell"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Robert_Rockwell","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Robert_Rockwell","edit":"https://en.m.wikipedia.org/wiki/Robert_Rockwell?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Robert_Rockwell"}},"extract":"Robert Rockwell was an American stage, film, radio and television actor. He is best known for playing the handsome, but awkward biology teacher Philip Boynton in the radio and television sitcom Our Miss Brooks opposite Eve Arden.","extract_html":"

Robert Rockwell was an American stage, film, radio and television actor. He is best known for playing the handsome, but awkward biology teacher Philip Boynton in the radio and television sitcom Our Miss Brooks opposite Eve Arden.

"}

{"type":"standard","title":"Danton's Death","displaytitle":"Danton's Death","namespace":{"id":0,"text":""},"wikibase_item":"Q920590","titles":{"canonical":"Danton's_Death","normalized":"Danton's Death","display":"Danton's Death"},"pageid":7004293,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/Bundesarchiv_Bild_183-Z0420-027%2C_Berlin%2C_%22Dantons_Tod%22.jpg/330px-Bundesarchiv_Bild_183-Z0420-027%2C_Berlin%2C_%22Dantons_Tod%22.jpg","width":320,"height":218},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/7/74/Bundesarchiv_Bild_183-Z0420-027%2C_Berlin%2C_%22Dantons_Tod%22.jpg","width":776,"height":528},"lang":"en","dir":"ltr","revision":"1267570589","tid":"a163a3e7-cb95-11ef-b9c6-0238278649bd","timestamp":"2025-01-05T18:48:19Z","description":"Drama by Georg Büchner","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Danton's_Death","revisions":"https://en.wikipedia.org/wiki/Danton's_Death?action=history","edit":"https://en.wikipedia.org/wiki/Danton's_Death?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Danton's_Death"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Danton's_Death","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Danton's_Death","edit":"https://en.m.wikipedia.org/wiki/Danton's_Death?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Danton's_Death"}},"extract":"Danton's Death was the first play written by Georg Büchner, set during the French Revolution.","extract_html":"

Danton's Death was the first play written by Georg Büchner, set during the French Revolution.

"}

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{"type":"standard","title":"Estimation of signal parameters via rotational invariance techniques","displaytitle":"Estimation of signal parameters via rotational invariance techniques","namespace":{"id":0,"text":""},"wikibase_item":"Q17011010","titles":{"canonical":"Estimation_of_signal_parameters_via_rotational_invariance_techniques","normalized":"Estimation of signal parameters via rotational invariance techniques","display":"Estimation of signal parameters via rotational invariance techniques"},"pageid":18593401,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/ESPRIT_2D.gif/330px-ESPRIT_2D.gif","width":320,"height":244},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/7/73/ESPRIT_2D.gif","width":940,"height":717},"lang":"en","dir":"ltr","revision":"1276552922","tid":"24835058-eecf-11ef-aa44-bc3b728f5178","timestamp":"2025-02-19T14:38:11Z","description":"Signal processing method","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Estimation_of_signal_parameters_via_rotational_invariance_techniques","revisions":"https://en.wikipedia.org/wiki/Estimation_of_signal_parameters_via_rotational_invariance_techniques?action=history","edit":"https://en.wikipedia.org/wiki/Estimation_of_signal_parameters_via_rotational_invariance_techniques?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Estimation_of_signal_parameters_via_rotational_invariance_techniques"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Estimation_of_signal_parameters_via_rotational_invariance_techniques","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Estimation_of_signal_parameters_via_rotational_invariance_techniques","edit":"https://en.m.wikipedia.org/wiki/Estimation_of_signal_parameters_via_rotational_invariance_techniques?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Estimation_of_signal_parameters_via_rotational_invariance_techniques"}},"extract":"Estimation of signal parameters via rotational invariant techniques (ESPRIT), is a technique to determine the parameters of a mixture of sinusoids in background noise. This technique was first proposed for frequency estimation. However, with the introduction of phased-array systems in everyday technology, it is also used for angle of arrival estimations.","extract_html":"

Estimation of signal parameters via rotational invariant techniques (ESPRIT), is a technique to determine the parameters of a mixture of sinusoids in background noise. This technique was first proposed for frequency estimation. However, with the introduction of phased-array systems in everyday technology, it is also used for angle of arrival estimations.

"}