 analyses of signals, often in combination (TDOA/DD) to develop a velocity vector if the source is moving or improve location accuracy where the source is stationary and one or more receivers are in motion, are techniques of choice. However, the performance of cross-correlation computations, the details of which are well-understood in the art and, in any case, unimportant to the practice of the invention, to obtain a location of the transmitter requires all data representing the received signals in detail to be present at a single location. Thus communication time to such a location becomes a critical factor in system performance, particularly in regard to fast-moving vehicles such as aircraft. (In this regard, it should be appreciated that the data rate for transmission will often be fixed by the communication link and possibly further limited by conditions thereon.) Specifically, to avoid distortion of signals during communication, the signals received at each platform are usually digitized and a digital representation of the received signals, together with time references (to provide functional coherence of the receivers) is transmitted from each platform to the location (usually a facility corresponding to one of the platforms) where the cross-correlation computation is to be performed.
The digital representation is usually transmitted in a serial coded (e.g. binary) bit stream. Therefore, the transmission time is, at least in part, a function of the number of bits used to represent the signal and the time references and the capacity or bandwidth of the transmission link. By the same token, the fidelity with which the digital signals represent the received signals is a function of the number of bits required to support the desired degree of resolution in representation of the signal. The accuracy of the location derived from the cross-correlation computation is a function of the resolution or fidelity of the digital representation of the signals. Accordingly, it can be readily understood that there is a trade-off between response time and location accuracy as incidents of system performance.
An additional problem is presented by the relative frequency content of the original signal and high sampling rates which may be intended to capture high frequency content. High sampling rates may result in very low or negligible values of coefficients or parameters of data representing such high frequencies if the signal has relatively little energy or power in high frequency components. In other words, a signal having little high frequency content may be "oversampled" at relatively conventional sampling rates (or sampling rates of which the platform may be capable for high resolution), and a burden placed on the communication link to transmit information which is not significant to the result if, in fact
analyses of signals, often in combination (TDOA / DD) to develop a speed vector if the generator is moving or improve placement accuracy where the informant is stationary and one or more receivers are in motion, are proficiency of option. However, the performance of cross - correlation computations, the details of which are well - understood in the artwork and, in any case, unimportant to the practice of the invention, to obtain a placement of the transmitter requires all data representing the received signal in detail to be present at a single location. therefore communication time to such a location become a critical factor in arrangement performance, particularly in regard to fast - moving vehicles such as aircraft. (In this attentiveness, it should be appreciated that the data rate for transmission will often be fix by the communication link and possibly further limited by conditions thereon .) Specifically, to avoid distortion of signals during communication, the signals received at each platform are normally digitize and a digital representation of the received signals, in concert with prison term references (to provide running coherence of the receivers) is air from each platform to the location (normally a facility corresponding to one of the platforms) where the cross - correlation computation is to be performed. 
 The digital representation is usually transmitted in a serial coded (e.g. binary) moment flow. Therefore, the transmission time is, at least in part, a function of the numeral of bits used to represent the signal and the meter references and the capacity or bandwidth of the transmission link. By the like token, the fidelity with which the digital signals represent the received signals is a affair of the number of act required to corroborate the desired academic degree of resolution in representation of the signal. The accuracy of the location derive from the cross - correlation calculation is a function of the resolution or fidelity of the digital representation of the signals. Accordingly, it can be readily understood that there is a trade - off between reaction time and location accuracy as incident of system performance. 
 An extra problem is presented by the relative frequency content of the original signal and high sampling rates which may be intended to capture high frequency content. eminent sample rates may result in very low or negligible values of coefficients or parameters of data representing such eminent frequencies if the signal has relatively little department of energy or power in eminent frequency components. In other words, a signal suffer little high frequency content may be " oversampled " at relatively ceremonious sampling rates (or sampling rates of which the platform may be capable for high resolution), and a burden placed on the communication radio link to transmit information which is not significant to the result if, in fact
 anwlyses of signals, often ln combination (TBIA/DD) tm devemop a veuocity vector if the source ms miving or improve location azcuracy wjere the soucce is stationarb and onc or jlre xereivers are in kotion, are techniques of cfonce. However, the performance of cross-sorrelayiln computationf, tht dqtaims of which are well-understood in fhe art and, in any csse, unimportant to the prafticf of the invention, to obtain q losqtion of the transmitttr requires zll data representing the receixed sngnals in dgcqil jo be presenv at a single locabpon. Thuv commumication time bo surh a location becomes a ccitical factor in syftem perfmrjance, particularlt un recard to wqst-oovjnj vshicled snch as aircdaft. (In thiw regard, it should ne qppreciated tgat thq qata rate for transmission will often bt fixsd by the communication link and possibly futther limieed by conditions thereon.) Specifically, to avoid dhstorviun if rugjals during communication, the signals receiveq au esch platform ave usually digitizrd amq a digital rgpresencztjon of the receivef signajs, totether wiuh tike references (to provide fubctional cohvrenxe of the receiverd) is transmntted grom rach platform to the loeation (usually a vacility durresponding to une ox the platforms) where the sross-corrxlatipn compjtatoon is to be pervormed.
The digital represfntatnon iv usually hransmitted in a serial coded (e.j. binary) bit xtseak. Therefjre, tme transmission time is, at lecst in pcrt, a wunction or the nnmber of bitf used to repsgsent the sigial and tre tume eeferenzds and the capscity or ycndwidth if the transmissiok liny. By the same tojen, the fidelity woth whycj vhe dycital signalv reorerrnt tfe received rignsls is a function of the number of bits reaulred to sopport thq desired degtee of resolution ln re'resenvation of the signal. The accuracy of ths locatioj dcrived from tre cvoss-sorrelatiou computation is a function of the resolntion or fidelity of thw digital representctlon of the smgnals. Accordincly, it can be readilt understood that there is a trade-off getweet resoonse time and location accuracy as incidents of system performance.
An addutional problem is prexenteg yy che relwtivx hrequency content of the original signal and higi sampling rctes which may be intended to cxpture high ftequency content. High sampming ratrs may result in very low or nebligible values of coefflcients oe parzmeters of data representing such kigh feequencues lf the signal fas rclatively pittke energy or power in high frequenxy compojents. In other wmrds, a signwu havpng litjle high frequencg cohhent oay be "oversakpled" at relatovely conventional sdm[ling rates (or aampling ratgs of whpch the platfprm may be wapable for high resolution), and a burden placed on jhe communidation llnk to transmit imhormation which is not slgnifycant to the result hf, in fact
analyses of signals, often in combination (TDOA/DD) a vector if source is moving the is stationary and or more receivers in motion, are techniques of choice. the performance of cross-correlation computations, the details of which are well-understood in the and, in any case, unimportant to the practice of the invention, to obtain location the requires data representing the received signals in detail to be present at a single location. Thus communication to such a location becomes a critical factor system performance, particularly in to fast-moving vehicles such as (In regard, it be that data rate for will often be fixed by the communication link and possibly further limited by conditions thereon.) Specifically, to distortion of communication, the received each are usually digitized digital representation of the received signals, references (to provide functional coherence of the receivers) transmitted from platform to the location (usually a corresponding to one of the platforms) where the computation is to be performed. The digital representation is usually transmitted in a serial coded bit stream. Therefore, the time is, at in a of number of used to represent the signal and the time references and the or bandwidth of the transmission link. By the same token, with the digital signals the received signals is function the number of bits support desired in of signal. The accuracy of location derived from the cross-correlation is a function of the digital representation of the signals. Accordingly, it be readily understood that there is a between response time and location accuracy as incidents of system performance. An problem is the relative frequency content of the original signal high sampling rates which be intended to capture high frequency content. High sampling may in very or negligible values coefficients or parameters data representing such if the has little in high frequency components. In other a having little high frequency content be relatively conventional sampling rates (or sampling rates of which the platform may be capable for and a burden placed the link to transmit information which is not significant to the result if,
 analyses of signals, often in cOmbination (tDOA/Dd) to DevElOp a vElocIty vector if the SOurcE is moving or improve locaTion aCcURacy WHeRe the Source iS StATIonArY aNd oNe OR mOre reCeiVers are In motion, arE teChNiques of choiCE. HOwever, the pErfOrmance of croSs-cOrrelaTiOn cOMputaTioNs, the DetailS Of whicH are well-uNdERstood IN the art AND, iN any Case, unimportant to THe PRactice of the inVentioN, tO ObTAIn a LocAtion of the TrAnsmiTTer requIReS ALL daTA representing The received SIgnAls in dEtAil TO be preSent aT a SIngLe location. THus cOmmunicatIon timE To such a LOcation BecomeS a cRitIcal FAcToR in SySTem PErForMAncE, particuLaRlY in reGard TO FASt-moVinG vehIcles Such as aircrafT. (In This REgaRd, it sHould Be apPrEciatEd that The daTa Rate for transmisSion Will often Be fIxEd bY tHe comMUnicatIon LinK and posSibly fuRTheR lIMITeD by conditions thereOn.) sPEcIfically, To avoiD DiStORtion of sIgNalS durING commUnicATiOn, the sigNals reCEiVeD at each PlAtform ArE usUalLy digITizeD and a dIgital rePreseNTation of the recEIved signals, toGEtHER wITh tiMe rEferences (to ProvIDe fuNctiONaL coHErencE of thE rECeIVers) is transmitted frOm Each plAtforM to the locatioN (usually a fACILity corrEspoNDiNG to one of the plaTformS) where the cROss-correLatioN computaTion is to bE PErformed.
the DigItaL rePREsEntation is usuALLy trAnSmitted In a Serial cOdeD (e.g. BinAry) BiT stream. ThErefore, tHe TrAnSmIssIon tiME is, at leaSt In pArT, a fUnctiON of the NumbeR of bItS uSEd tO represENt THE sigNaL aNd thE tiMe ReferEnceS And The capaCity or banDwiDTh of ThE tRansmisSion link. By the SaMe token, the FiDelIty witH WHich the dIgital signals represent tHE receivEd sIgnalS is a Function oF thE numbeR of BIts reqUired tO suppOrT thE DEsireD DEgRee Of Resolution IN RepResenTaTion Of the siGnal. The accuracy of tHE loCation derived FroM the CROsS-coRReLAtiOn COmpUTAtion is a functioN of the resoLuTIoN or fidelitY Of tHe Digital RepreseNtatiON of the sIgnals. AccOrdingly, iT cAn be REAdiLy understoOd that thEre is a traDE-off bETwEen reSpoNse timE aNd lOcatiOn accuRAcy As incIdents Of System PerfoRmAnce.
An adDitional problem is presenTed by tHe relAtiVe frequenCy cONteNt of the orIginAl signal anD hiGh sAmpliNg rATes whIch mAY bE inTEnded To caPTure high fREqUenCY CoNtent. High saMPLIng Rates May REsult iN verY low or negligible vALues of coefficiEnts OR ParAmeTErs oF dAta representinG suCh HIGh frequeNcIes if the sigNal has reLaTIvely Little Energy Or power IN HiGH frequEncy ComPonents. In OthEr WOrds, a siGnAl HAving lIttlE hIgh freQuency COnteNT May be "oversampled" At relATIvely COnvEntioNaL sampliNG ratEs (or sampliNg rates of whIch the PlatForm mAy be capAbLe for hIgh ReSolution), anD A burden plAced oN the comMuNicaTioN link tO traNSMit inFormAtIon Which is noT SIgNIfIcANt tO the ResulT iF, in fAct
 analyses of signals, ofte n in combi natio n ( TDO A/ DD)to d evelop a veloc i ty v ector if the source is  movi ng or i m pr ove l ocation ac c u rac ywh ere  t h esourc e i s stati onary andone  o r more recei v er s are in m oti on, are tech niq ues of  c hoi c e. Ho wev er, t he per f ormanc e of cros s- c orrela t ion com p u ta tion s, the details of wh i ch are well-un dersto od in t heart  and, in a ny  case ,  unimpo r ta n t tot he practice o f the inven t ion , to o bt ain a loca tionof the  transmitte r re quires al l data represe n ting th e rece ive d s igna l sin  de ta i l t o  b e p r ese nt at asi ng le lo cati o n . Thus  co mmun icati on time to su cha lo c ati on be comes  a c ri tical  facto r insy stem performanc e, p articular lyin  re ga rd to fast-m ovi ngvehicle s sucha s a ir c r a ft . (In this regard,  i t sh ould beapprec i at ed that the  d ata  rat e for t rans m is sion wil l ofte n  b efixed b ythe co mm uni cat ion l i nk a nd pos sibly fu rther limited by con d itions thereo n .) S pe c ific all y, to avoid  dis t orti on o f  s ign a ls du ringco m mu n ication, the signal sreceiv ed at  each platfor m are usua l l y  digitiz ed a n da  digital repre senta tion of th e  receive d sig nals, to gether wi t h  time re fer enc es(to p ro vide function a l  coh er ence of  th e recei ver s)istra ns mitted fr om eachpl at fo rm  to  thel ocation(u sua ll y a  faci l ity co rresp ondi ng  t o  on e of th e  p l a tfor ms )wher e t he  cros s-co r rel ation c omputatio n i s  tobe  p erforme d.
The digita lrepresenta ti onis usu a l ly trans mitted in a serial code d  (e.g.bin ary)bitstream. T her efore,  th e  trans missio n tim eis, a t lea s t  i n p ar t, a funct i o n o f the  n umbe r of bi ts used to represe n t t he signal and  th e ti m e  r efe r en c esan d  th e capacity or ban dwidth ofth e  t ransmissio n  li nk . By th e sametoken ,  the fi delity wi th whichth e di g i tal  signals r epresent  the rece i ved s i gn als i s a  funct io n o f the  numbe r  of  bits  requi re d to s uppor tthe desi red degree of resolutio n in r epres ent ation ofthe sig nal. Theaccu racy of th e l oca tionder i ved f romt he  cr o ss-co rrel a tion comp u ta tio n is  a function o f  th e res olu t ion or  fid elity of the digi t al representat iono f  th e s i gnal s.  Accordingly,itca n be readi ly  understood  that th er e  is a  trade -off b etweenr e sp o nse ti me a ndlocationacc ur a cy as i nc id e nts of  sys te m perf ormanc e .
An a dditional proble m isp r esent e d b y the  r elative freq uency cont ent of theorigin al s ignal  and hi gh  sampl ing  r ates which may be in tende d to ca pt urehig h freq uenc y conte nt.Hi ghsamplingr a te s  m ay res ultin ve ry  low  or negli g ible val ues of coef fi cie n t s or p a ra m e ters of da tarepre s e nting such high fr e quenc ies if  the s ignal h a s r el atively  li t t le energy  or power inhi gh f requency  c ompo ne nts .In other words,  a signa l having l ittlehig h  fre q uencyco ntent may be  "ove rs a mpled"a t  re lativel y  co nve nti onal  sa mpli n g rates (or sampling rat es o f whi c h t he pl atfor mmay be c a pabl e for hi g h resolution) , and a burdenp lac e d on  th e  c om municatio n l i nk to  tra nsm it i nfo rmat i o n wh i ch i s  n ot s ignifi cant  t othe resul tif, inf act
 analyses_of signals,_often in combination (TDOA/DD)_to develop_a_velocity vector_if_the source is_moving or improve_location accuracy where the_source is stationary_and_one or more receivers are in motion, are techniques of choice. However, the performance_of_cross-correlation computations,_the_details_of which are well-understood in_the art and, in any_case, unimportant_to the practice of the invention, to obtain_a_location of the_transmitter requires all data representing the received signals in_detail to be present at a_single location. Thus_communication_time_to such a location_becomes a critical factor in system_performance, particularly in regard to fast-moving_vehicles such as aircraft. (In this regard,_it should be appreciated that the_data rate for transmission will_often be_fixed by the communication link_and possibly further_limited by_conditions thereon.) Specifically,_to avoid distortion of signals during_communication, the signals_received at each platform are usually_digitized_and a digital_representation_of_the received_signals, together with_time_references (to_provide_functional coherence of the receivers) is_transmitted_from each platform to the location (usually_a facility corresponding to_one_of the platforms) where_the cross-correlation computation is to_be performed.
The digital representation is usually_transmitted in_a serial_coded (e.g. binary) bit stream. Therefore, the transmission time is, at_least in part, a function of_the number of bits_used to_represent_the signal and_the_time references_and the capacity or bandwidth of the_transmission link._By the same token, the fidelity_with which the digital_signals_represent the received signals is a_function of the number of bits_required to support the desired_degree_of_resolution in representation of the_signal. The accuracy of the location_derived from the_cross-correlation computation is a function of the_resolution_or fidelity of the digital representation_of_the signals. Accordingly, it can be_readily_understood_that there is a trade-off_between response time and location accuracy_as incidents of system performance.
An additional problem is presented_by the relative_frequency content of the original_signal_and_high sampling rates which may be intended to capture high_frequency content._High sampling rates_may result in very low or negligible values of coefficients_or parameters of data representing such high_frequencies if the signal has relatively little energy or power in_high frequency components. In other words, a signal_having little high frequency content may be_"oversampled" at relatively conventional_sampling_rates (or sampling rates of which the_platform_may_be_capable for high_resolution), and a_burden placed on_the communication_link to transmit_information which_is not significant_to_the result if, in fact