Thewide-swathmethodbasedonmulti-receiverisanovelandhighlyaccuratewide-swathmethod,whichrequiresaverypreciseviewangle.Theestimatedanglehaserrorbecauseoftheatmosphererefraction,angleerrorofviewandtargetheight.Amethodisproposedinthispapertoestimatetheangleerrorfromthereturnsignal.Themethodmakesuseoftherelationshipbetweentheviewangleerrorandthesignalcorrelationofthesubswathstoestimatetheangleerror.Theprecisionofthismethodisanalyzedbythelawofgreatnumberanditturnsouttobeindirectproportiontotherootsquarenumberofaveraging.Thesimulationresultisgivenandtheangleprecisionis0.025°.