gBddlmZddlmZddlmZdd ZddZddZdS)) annotations)datetime)commonmsg0strmsg1t0int | datetimet1returnNone | tuple[float, float]c(tj|dd}tj|dd}t|d}t|d}|dkr|dkrn$|dkr|dkr ||}}||}}ntdtj|ddd z }tj|dd d z } tj|ddd z } tj|dd d z } d } d } tjd |zd| zz dz}t | |dz|zz}t | |d z| zz}|dkr|dz }|dkr|dz }tj|tj|krdS||krm|}tj|}ttj|dz d}tj| |dz z| |zz dz}d|z ||z| zz}nl|}tj|}ttj|dz d}tj| |dz z| |zz dz}d|z ||z| zz}|dkr|dz }||fS)aiDecode airborne position from a pair of even and odd position message Args: msg0 (string): even message (28 hexdigits) msg1 (string): odd message (28 hexdigits) t0 (int): timestamps for the even message t1 (int): timestamps for the odd message Returns: (float, float): (latitude, longitude) of the aircraft Nrz*Both even and odd CPR frames are required.'8@<"h@;<?ih) rhex2binint RuntimeErrorbin2intfloorfloatcprNLmax)rr r r mb0mb1oe0oe1 cprlat_even cprlon_even cprlat_odd cprlon_oddair_d_lat_even air_d_lat_oddjlat_evenlat_oddlatnlnimlons K/home/andy/.local/lib/python3.11/site-packages/pyModeS/decoder/bds/bds05.pyairborne_positionr9s .  rss #C .  rss #C c"g,,C c"g,,C axxC1HH cQhhSRBGHHH.RU,,v5K.RU,,v5KBrE ++f4JBrE ++f4JNM  R+%Z7#=>>A^q2v ';<==HMQVj%89::G3c>#~~C-|Hg!6!666t Bww \#   c""Q& * * LQ/*r/ACG H HRxAF[01 \#   c""Q& * * LQ/*r/ACG H HRxAFZ/0 SyyCi 8Omsglat_refr#lon_reftuple[float, float]ctj|dd}tj|dddz }tj|dddz }t|d}|rdnd }tjd ||z z|z }|||zz} tj| |z } | d krd | z } nd } tjd || z z|z } | | |zz} | | fS) aDecode airborne position with only one message, knowing reference nearby location, such as previously calculated location, ground station, or airport location, etc. The reference position shall be within 180NM of the true position. Args: msg (str): even message (28 hexdigits) lat_ref: previous known latitude lon_ref: previous known longitude Returns: (float, float): (latitude, longitude) of the aircraft rNrrrrrrrrrr)rrr!rr"r$)r;r<r=mbcprlatcprlonid_latr0r3r5d_lonr6r7s r8airborne_position_with_refrFXs"   RSS !B ^Br"uI & & /F ^Br"uI & & /F BrF A 'HHxE  S7U?*V344A 1v: C c  Q B Avvb S7U?*V344A 1v: C 8Or: None | intchtj|}||dks |dks|dkrtd|ztj|dd}|dd}|dkr6|d d d z|d dz}tj|}|d kr|SdStj|d zS)z{Decode aircraft altitude Args: msg (str): 28 hexdigits string Returns: int: altitude in feet N rz$%s: Not an airborne position messagerr0igD )? @)rtypecoder raltituder!)r;tcr@altbinaltcodealts r8rPrPs   B zR!VVrRxx277ACGHHH   RSS !B "XF Bww1+#fQRRj0og&& '>>J4~f%%//r:N) rrr rr r r r r r)r;rr<r#r=r#r r>)r;rr rG) __future__rrrr9rFrPr:r8rXs#"""""GGGGT))))X000000r: