introduction, currently, global, navigation, satellite, system, used, couple, decades, tool, mainly, governments, corporate, organizations, particular, individuals, easily, access, position, velocity, solution, receivers, cheaper, smaller, expected, frequency, environment, public, domain, freely, available, triggering, range, significant, services, designed, rely, positioning, unique, role, synchronized, extremely, precise, atomic, users, determine, within, billionths, capability, operation, multiple, meaningful, activities, financial, networks, stock, stamping, electrical, power, grids, cell, phone, digital, broadcast, percent, stratum, servers, pool, using, synchronization, quantity, being, redesigned, strict, dependence, companionship, example, broadly, transportation, industry, map, apps, mobile, devices, going, self, driving, maritime, uavs, main, input, instance, deeply, attached, functioning, normal, daily, lives, however, fully, secured, seventies, united, stares, defence, 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accelerometers, pitot, static, limited, conditions, clouds, fog, camera, video, magnetic, compass, complete, modules, implementations, compact, portable, suitable, payload, comparison, radars, alarmingly, authenticity, newest, gnsss, popular, widely, specific, detailed, description, publicly, disclosed, positive, studies, research, software, created, create, malicious, unprotected, although, optimistic, forecast, european, encrypted, substantially, complexity, perform, planned, navigated, data, lacking, exactly, happening, nowadays, broadcasting, transmitted, unencrypted, thus, feasibility, deviously, disrupted, furthermore, sdrs, disclosure, free, simulator, easier, theoretical, proprietary, therefore, dispensing, proper, making, vulnerable, additionally, situational, awareness, threats, posing, existent, asymmetry, easiness, unavailability, motivation, describes, analysis, proposed, uprising, conducting, gap, necessary, accomplishment, caused, chipset, damage, interference, procedure, implies, link, landmarks, terrain, priori, saved, manoeuvring, tested, uncertainly, avoid, accidental, endings, worst, effectively, incapability, maintain, alert, set, manual, mode, similar, followed, disastrous, hypothesis, force, fuel, crash, prohibited, restricted, areas, airports, national, boarders, trespassing, county, airspace, grave, challenge, delivering, debatable, controversial, hijacked, iran, possibilities, stolen, injecting, claimed, official, verifications, happened, academics, state, questions, secure, mini, micro, circumstances, prominent, vectors, actively, detect, theories, integrated, single, algorithm, technical, specifications, executed, detected, ensure, scenarios, applicability, overview, finding, directing, achieve, identify, analyse, prevent, likeliness, understand, jammer, options, purchase, privacy, simple, produce, denial, emit, emulate, complex, moving, constellation, cracking, doing, gradually, decreasing, commercial, acquire, approximately, recently, source, hardware, acquired, scientist, researchers, academicians, hobbyist, unscrupulous, achieved, depending, actor, inject, configure, needed, script, kiddie, level, transmission, antenna, laptop, freeware, binary, stream, partially, finished, projects, online, obtained, plus, simplistic, secondly, attacker, testing, restrictions, approx, thousands, sophisticated, offering, generation, following, university, estimated, capable, develop, dedicated, effort, accomplished, faster, due, constant, https, github, com, osqzss, gps, sim, gnss, finally, capacity, corporation, classified, assumed, considering, developing, cutting, technologies, practically, recourses, civil, miss, concept, nature, allows, exploitable, standard, detecting, orbiting, roughly, kilometres, altitude, received, strength, medium, dbm, weak, coverage, unavailable, indoors, overwhelmed, overlapped, legit, addition, transmit, bandwidth, doppler, almanac, ephemeris, secrecy, understanding, facilitating, functions, emulation, construct, balances, automatically, selecting, strongest, propending, acquiring, stronger, immediately, captures, correlation, peak, target, induce, taking, command, heading, autopilot, feedback, loop, nearly, impossible, unpredictable, replay, existing, meaconing, known, readily, predictable, occurrence, nor, conducted, properly, transition, transparent, notable, period, reacquisition, necessarily, produced, intentionally, solar, radiation, bursts, carelessly, uncontrolled, unusual, temporal, alerted, overcome, manoeuvres, stipulated, initially, trustworthy, coordinates, beam, channels, origin, reference, location, directional, located, alternative, geolocation, cancelled, highly, reduced, rather, bemuse, filtered, blind, trusting, legitimacy, mechanisms, presence, possible, easiest, sufficient, acknowledgment, manufactures, implement, asymmetric, proportion, released, firmware, version, antispoofing, blox, february, series, launched, fool, attacking, objectives, fooling, successfully, react, accordingly, completely, succumb, flagged, fooled, changing, safest, remark, contemplates, ideally, considered, exist, conclude, barrier, cheap, downloadable, internet, section, mentioned, factors, affect, subjected, varying, permanent, disruption, stealing, hijacking, monitoring, meticulously, pattern, stable, covert, post, www, en, press, release, multi, higher, performance, embedded, crashing, elevation, values, behaviour, dive, barometric, prevails, accomplishing, height, controlling, confusing, disorientating, misleading, trajectory, disqualifying, randomly, proof, securing, conjugate, appropriate, thresholds, becoming, fundamentally, statistical, decision, false, context, definition, variety, difference, sense, narrow, extent, define, scheme, creator, recipient, distinct, taken, consideration, applicable, subgroup, excluding, placed, tactical, category, discarding, strategic, distribution, average, thesis, mostly, intergovernmental, elevated, maintenance, especial, less, prone, remote, vessels, jungle, compounds, physical, landing, maximum, exceed, meters, interaction, likely, telemetry, triangulation, weight, robust, instruments, conventional, flown, skilled, certifications, experience, prepared, manage, contingency, flexibility, dynamic, components, relatively, worldwide, commercialization, adequate, test, experiment, customized, operated, licences, support, communities, protocols, patches, upgrades, applied, spare, adapted, logic, selection, affordable, manipulate, corresponds, contributions, oscillate, versed, ignores, details, professional, shooting, traditional, interpret, suspicious, intermittent, abrupt, discrepancies, commodities, technological, competence, interfere, performed, anyplace, outdoors, emission, authorities, general, contemplated, ideal, flexible, extreme, obstructions, relevant, depends, related, requirements, assessing, threat], validate, custom, property, nevertheless, texas, highlighting, developed, intermediate, zurich, considers, discuss, topics, precision, simulating, simulates, event, unicorn, qihoo, co, ltd, presented, code, simulated, takuji, ebinuma, downloading, sim], oleg, petrovsky, senior, realised, territory, spoof, shoestring, effectiveness, manufacturer, focus, locked, normally, focused, difficult, disregarded, effects, aimed, proposing, platform, approaches, scalable, herein, refers, realising, simulation, propagation, violating, regulations, band, hence, discussed, controlled, scope, discards, result, conjugation, selected, default, configuration, model, validation, process, availability, additional, kinetic, non, irregular, environmental, schema, methodology, solve, designscienceresearchmethodology, stage, art, characteristics, gather, comprehend, interact, variables, acknowledge, withe, grey, engines, institutes, sites, publications, journals, magazines, classifying, comparing, combined, employed, identifying, validating, integrate, evaluation, prove, efficacy, local, chapter, described, firstly, classification, background, categorization, explained, dual, separate, broadcasted, mhz, unauthenticated, modulated, whereas, authenticated, agencies, institutions, encryption, consists, omits, providing, uninterrupted, anywhere, arrival, involves, measuring, multiplied, obtain, travelled, calculated, emitters, solving, equation, resulting, imperfect, alignment, scale, distinguished, modulating, ranging, identifiable, equivalent, corse, acquisition, megabits, per, correlates, precisely, aligned, alike, message, hz, contains, required, assist, translate, indications, correct, errors, measurements, entire, tracking, phase, reviver, turned, occurs, expensive, match, dimension, offset, beginning, trying, al, slots, pseudo, random, internal, carrier, rates, fix, calculate, current, started, dimensional, orbital, correction, predict, approximate, definite, doesnt, typically, whenever, powered, battery, backup, memory, bps, minimum, stored, useable, missing, downloaded, receive, thereby, previously, reported, goal, stealthily, categorized, via, simplest, basically, generated, meaning, packets, unless, significantly, defined, lowered, setting, included, record, connected, transmitter, synchronizes, generate, knowing, pointing, authentic, grab, deceived, projecting, delay, construction, advanced, carried, coordinated, spatial, itself, trough, numerous, lock, succeed, quality, decisive, synchronous, original, centimetres, genuine, asynchronous, rough, victims, looking, realistic, drawback, locking, abnormal, anti, organized, focuses, discovering, neutralize, sustained, semi, autonomous, combination, connection, straightforward, majority, combines, aspects, according, direct, reliable, accessibility, summarized, structure, bento, insidegnss, auto, wp, pdf, cryptographic, unpredictability, modulate, estimate, chips, noted, probabilistic, invulnerable, signatures, enhanced, download, verified, defense, operates, isolation, array, processing, suited, mitigate, utilizing, attitude, projected, blocked, constraining, adaptive, forming, investigated, including, modulation, features, mislead, include, vestigial, containing, parameters, ionosphere, distributed, sub, frames, consistency, check, occurring, calculation, integrity, wi, fi, cellular, briefly, estimation, established, noisy, space, null, steering, steers, highest, energy, coming, maximization, unintended, reduction, amplified, individually, latency, consecutive, accumulations, length, interval, boundary, fundament, strain, suppressing, inspects, vestige, correlator, monitors, determined, tracked, joint, principel, differencing, doas, output, triggered, spotted, considerably, diverges, regress, discarded, characterizing, cross, ambiguity, distortion, distinguish, remove, discrimination, absolute, uncommon, increments, raised, discriminate, decibels, greatest, surface, dbw, coupling, likelihood, acceptable, redundancy, employment, delivered, improve, abilities, history, relative, slightly, deceive, recorded, periodically, predetermined, otherwise, replicated, vary, identification, ids, demonstrate, attempts, particularly, unsophisticated, perceived, simultaneously, variations, versus, movement, relation, multipath, etc, considerable, irrelevant, amoralities, predefined, contemplating, various, pinpoint, microseconds, unavoidable, recreating, predictability, update, constantly, checking, fluctuations, chi, squared, resented, standalone, modern, reception, generally, useful, difficulty, mounting, linearly, ensembles, accuracy, compare, inconsistencies, corrected, delivery, timestamp, rudimentary, verify, analysing, auxiliary, predicting, unexpected, extracted, form, interface, inserts, convenient, undefined, wesson, rothlisberger, humphreys, automatic, gain, flagging, drastic, causes, thermal, [detecting, holly, borowski, oscar, isoz, fredrik, marsten, eklf, sherman, lo, dennis, akos], weakness, voltage, called, summary, discriminated, namedescriptionencryptednetworkedorstandalonesingleormultiantennalayerreceiverrequiredcapabilityalow, complexitygpsanti, spoofingmethodusingamulti, antennaarrayestimatesthedirectionwhereallspoofingpseudorandomnoisecodesaretransmitted, consideringtheyallcomefromthesamesourceinspaceandsteeranullvaluetothemnostandalonemultisignalprocessingmultiplereceiverantennasdatabitlatencydefencethetargetreceivercontinuouslymonitorsthebitlockinthec, acodelength, lookingfordatabitsignchangesnostandalonesingledatabitmonitorsthebitlockinthec, acodelengthvestigialsignaldefencemonitorthepresenceoflegitvestigesignalstodistinguishedmorethanonecorrelatorpeaksnostandalonesinglesignalprocessingfilteroutvestigelegitgpssignalsantenna, basedjointattitudeestimationusingtheestimateddoafordiscriminatingbetweenauthenticgnssandthespoofingsignals, nostandalonemultidatabitminiaturizedantennaarray, correlatoroutputdistributionanalysisdetectsifthiscorrelatoroutputdistributionconsiderablydeviatesfromthedistributionoftheauthenticsignal, nostandalonesinglesignalprocessingmonitorthedistributionofthecorrelatoroutputdetectionofspoofedgpssignalsatcodeandcarriertrackinglevelmonitorsthedistortionduringthesignalliftoffthathappensinintermediatespoofingattacks, nostandalonesinglesignalprocessingrequiresspecialsignalprocessingcapabilitiesreceiverautonomousintegritymonitoringraimdetectsspoofedsignalwhenthereisonlytwoprnnostandalonesinglepositionsolutionandnavigationlevelraimimplementedspoofingdiscriminationbasedonabsolutepowermonitoringmonitorsabsolutesignalpower, betweenthetypicalandmaximumpossiblevalues, obtainedbyraimalgorithm, antennaspoofingdiscriminationgpscorrelatorsareappliedtonumerousbeamoutputstospotandlocatespoofernostandalonemultisignalprocessingmultiplereceiverantennasprncodeanddatabitlatency, lookingforabruptchangesinthisvalue, squareddistributionofthecorrelatoroutputnostandalonesinglesignalprocessingdistributionanalysisofcorrelatoroutputsconsistencycheckwithothergnssconstantchecksagainstpvtsolutionsofothergnssnostandalonesinglepositionsolutionandnavigationlevelmultiplegnssreceiverchipset, consistencycheckwithotherpositiontechnologiescomparisonofthepositionsolutionwiththeobtainedbymobileorwi, finetworksnonetworkedsinglepositionsolutionandnavigationlevelinternetconnectionconsistencycheckwithothertechnologiescomparisonofgpsdataintegritywiththeobtainedofthirdpartysources, nonetworkedsinglepositionsolutionandnavigationlevelinternetconnectionconsistencycheckwithothersensorsanalysingandcomparinggpsdatawithauxiliarydeviceslikeimu, compassorpitotstaticinstruments, nonetworkedsinglepositionsolutionandnavigationleveladeviceslikeimu, compassorpitotstaticinstrumentsdefencebasedonspread, transmissionofadigitalkeygeneratedbyspread, spectrumsecuritycodesoverthenavigationmessageyesstandalonesinglesignalprocessingmodificationinthegpsis, insertionofapublic, keydigitalsignaturesinsidethegpscivilnavigationmessageyesstandalonesinglesignalprocessingmodificationinthegpsis, framework, picturing, participants, delimitating, involvement, analysed, strategy, attacked, technically, outer, represents, counterfeited, interfered, drowned, encloses, inquiring, smartphone, harmonically, external, entity, responsible, execute, representing, specified, nuand, bladerf, duplex, serving, bladegps, file, creation, blog, product, archive, maintained, publish, date, manipulated, specifying, plain, format, undesiring, transmitting, interpretable, captured, injected, indented, noticeable, competing, deliver, influenced, regulates, incoming, vendor, caching, common, [tyler, nighswander, attacks], implications, prolonged, initial, infinite, processed, cddis, nasa, gov, data_and_derived_products, broadcast_ephemeris_data, html, quad, copter, apply, dronecode, suite, encompasses, enable, planning, mavlink, adopted, representative, parrot, qualcomm, intel, dronedeploy, yuneec, diagram, solo, composed, controller, optionally, visualize, connecting, joystick, concentered, hosted, tablet, resides, gopro, specs, org, dev, speciation, km, ascent, hardcoded, physically, pressure, drifting, temperature, kalman, filter, factory, reading, modularity, built, observed, directly, working, optional, hosts, commanding, conveniences, primary, connectivity, linux, running, yocto, pixhawk, stabilization, recovery, communicates, computer, downstream, gimbal, accessory, qgroundcontrol, planner, dronekit, android, python, customizing, exclusively, customization, transport, constructed, listened, retrieve, gps_status, command_ack, ekf_status_report, global_position_int, gps_raw_int, named_value_int, power_status, radio_status, raw_imu, documents, ethz, ch, rc_channels_raw, scaled_pressure, sensor_offsets, servo_output_raw, system_time, sys_status, terrain_report, vfr_hud, attitude_quaternion, fused, raw, returned, typical, differential, scaled_imu, metrics, displayed, studio, extensible, catalogue, websites, retrieved, equally, status, ratio, visible, calling, classes, listener, select, criteria, brief, satisfied, reached, excluded, filtering, distinguishing, advance, sololink, class, gpssatellite, getsnr, parsing, gpsstatus, nmealistener, requiring, philosophy, svs, getprn, correlating, beidou, nonetheless, enabling, disabling, talker, prefix, indicates, proceed, extracting, correlated, summarize, conceived, validated, transported, cable, combiner, faraday, violate, fed, outcome, adjusted, attenuators, booting, feeding, cero, thirty, clearly, drown, showed, sessions, deleted, occasion, trigger, induced, expecting, agreement, intermittently, stellates, remain, re, accurately, installed, solid, proposal, samples, recollection, recollected, deviation, dataset, ordinary, calculating, collection, affected, obstacles, scattered, view, galileo, statistics, later, profound, datasheet, suggested, suggests, symptom, alerting, parsed, nmea, screen, announcing, equal, gotten, longer, erratic, ntp, conclusions, counterattacks, issues, concluded, exanimated, shown, success, concluding, recommendations, material, discusses, suggestions, od, signalling, despite, supporting, claims, requisition, inputted, implanted, reduce, probabilities, founded, subset, postulated, especially, gathering, alters