Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W4250460179', 'doi': 'https://doi.org/10.1002/(sici)1099-1247(200003/04)18:2<63::aid-sat651>3.3.co;2-a', 'title': 'COMETS experiments for advanced mobile satellite communications and advanced satellite broadcasting', 'display_name': 'COMETS experiments for advanced mobile satellite communications and advanced satellite broadcasting', 'publication_year': 2000, 'publication_date': '2000-03-01', 'ids': {'openalex': 'https://openalex.org/W4250460179', 'doi': 'https://doi.org/10.1002/(sici)1099-1247(200003/04)18:2<63::aid-sat651>3.3.co;2-a'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/(sici)1099-1247(200003/04)18:2<63::aid-sat651>3.3.co;2-a', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S15314142', 'display_name': 'International Journal of Satellite Communications', 'issn_l': '0737-2884', 'issn': ['0737-2884', '1099-1247'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5017061620', 'display_name': 'H. Wakana', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'H. Wakana', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5029373896', 'display_name': 'H. Saito', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'H. Saito', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5067190061', 'display_name': 'S. Yamamoto', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'S. Yamamoto', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5009029846', 'display_name': 'M. Ohkawa', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'M. Ohkawa', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5029199781', 'display_name': 'N. Obara', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'N. Obara', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5032622652', 'display_name': 'H‐B. Li', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'H‐B. Li', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5013083815', 'display_name': 'M. Tanaka', 'orcid': None}, 'institutions': [], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'M. Tanaka', 'raw_affiliation_strings': ['Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan'], 'affiliations': [{'raw_affiliation_string': 'Kashima Space Research Centre, Communications Research Laboratory, 893-1 Hirai, Kashima, Ibaraki 314-0012, Japan', 'institution_ids': []}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 2.821, 'has_fulltext': False, 'cited_by_count': 7, 'citation_normalized_percentile': {'value': 0.763289, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 76, 'max': 78}, 'biblio': {'volume': '18', 'issue': '2', 'first_page': '63', 'last_page': '85'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12042', 'display_name': 'Satellite Communication Networks and Systems', 'score': 0.997, 'subfield': {'id': 'https://openalex.org/subfields/2202', 'display_name': 'Aerospace Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T12042', 'display_name': 'Satellite Communication Networks and Systems', 'score': 0.997, 'subfield': {'id': 'https://openalex.org/subfields/2202', 'display_name': 'Aerospace Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T12449', 'display_name': 'Evolution and Applications of CubeSat Missions', 'score': 0.9167, 'subfield': {'id': 'https://openalex.org/subfields/2202', 'display_name': 'Aerospace Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10715', 'display_name': 'Distributed Grid Computing Systems', 'score': 0.9145, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, 'field': {'id': 'https://openalex.org/fields/17', 'display_name': 'Computer Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/communications-satellite', 'display_name': 'Communications satellite', 'score': 0.6888649}, {'id': 'https://openalex.org/keywords/satellite-broadcasting', 'display_name': 'Satellite broadcasting', 'score': 0.6820197}, {'id': 'https://openalex.org/keywords/satellite-communications', 'display_name': 'Satellite Communications', 'score': 0.548263}, {'id': 'https://openalex.org/keywords/space-technology', 'display_name': 'space technology', 'score': 0.500372}], 'concepts': [{'id': 'https://openalex.org/C19269812', 'wikidata': 'https://www.wikidata.org/wiki/Q26540', 'display_name': 'Satellite', 'level': 2, 'score': 0.76380974}, {'id': 'https://openalex.org/C121308736', 'wikidata': 'https://www.wikidata.org/wiki/Q149918', 'display_name': 'Communications satellite', 'level': 3, 'score': 0.6888649}, {'id': 'https://openalex.org/C2986254709', 'wikidata': 'https://www.wikidata.org/wiki/Q209588', 'display_name': 'Satellite broadcasting', 'level': 3, 'score': 0.6820197}, {'id': 'https://openalex.org/C110157686', 'wikidata': 'https://www.wikidata.org/wiki/Q922122', 'display_name': 'Broadcasting (networking)', 'level': 2, 'score': 0.5701801}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.49940538}, {'id': 'https://openalex.org/C76155785', 'wikidata': 'https://www.wikidata.org/wiki/Q418', 'display_name': 'Telecommunications', 'level': 1, 'score': 0.48930737}, {'id': 'https://openalex.org/C62649853', 'wikidata': 'https://www.wikidata.org/wiki/Q199687', 'display_name': 'Remote sensing', 'level': 1, 'score': 0.42526233}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.25710934}, {'id': 'https://openalex.org/C31258907', 'wikidata': 'https://www.wikidata.org/wiki/Q1301371', 'display_name': 'Computer network', 'level': 1, 'score': 0.1738255}, {'id': 'https://openalex.org/C146978453', 'wikidata': 'https://www.wikidata.org/wiki/Q3798668', 'display_name': 'Aerospace engineering', 'level': 1, 'score': 0.15847135}, {'id': 'https://openalex.org/C205649164', 'wikidata': 'https://www.wikidata.org/wiki/Q1071', 'display_name': 'Geography', 'level': 0, 'score': 0.1155054}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/(sici)1099-1247(200003/04)18:2<63::aid-sat651>3.3.co;2-a', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S15314142', 'display_name': 'International Journal of Satellite Communications', 'issn_l': '0737-2884', 'issn': ['0737-2884', '1099-1247'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W4200024937', 'https://openalex.org/W2295212584', 'https://openalex.org/W2146747846', 'https://openalex.org/W2075131605', 'https://openalex.org/W2074169567', 'https://openalex.org/W2062793813', 'https://openalex.org/W2028190576', 'https://openalex.org/W1836774208', 'https://openalex.org/W1517828133', 'https://openalex.org/W1483991559'], 'abstract_inverted_index': {'International': [0, 629, 652, 690, 803], 'Journal': [1, 691], 'of': [2, 387, 397, 410, 421, 507, 512, 525, 542, 547, 552, 558, 580, 627, 650, 692, 718, 729, 740, 766, 771, 801, 833], 'Satellite': [3, 443, 606, 631, 654, 693, 805], 'CommunicationsVolume': [4], '18,': [5], 'Issue': [6], '2': [7, 614], 'p.': [8], '63-85': [9, 846], 'Research': [10, 31, 34, 43, 46, 65, 68, 87, 90, 109, 112, 131, 134, 153, 156, 175, 178, 200, 203, 212, 215, 234, 237, 256, 259, 278, 281, 300, 303, 322, 325, 344, 347], 'Article': [11], 'COMETS': [12, 473, 526, 564, 582, 795], 'experiments': [13], 'for': [14, 54, 76, 98, 120, 142, 164, 186, 223, 245, 267, 289, 311, 333, 355, 571, 647, 761, 794, 826], 'advanced': [15, 20, 455, 461, 485, 706, 796], 'mobile': [16, 456, 622, 762, 797, 828], 'satellite': [17, 21, 457, 462, 470, 486, 583, 623, 645, 763, 829], 'communications': [18, 458, 471, 487], 'and': [19, 385, 389, 401, 408, 427, 439, 451, 465, 467, 554, 562, 584, 773], 'broadcasting': [22, 463], 'H.': [23, 27, 61, 192, 196, 230, 791], 'Wakana,': [24, 193], 'Corresponding': [25, 194], 'Author': [26, 195], 'Wakana': [28, 197, 601, 818], 'Kashima': [29, 63, 85, 107, 129, 151, 173, 198, 232, 254, 276, 298, 320, 342], 'Space': [30, 42, 64, 86, 108, 130, 152, 174, 199, 211, 233, 255, 277, 299, 321, 343, 670], 'Centre,': [32, 44, 66, 88, 110, 132, 154, 176, 201, 213, 235, 257, 279, 301, 323, 345], 'Communications': [33, 45, 67, 89, 111, 133, 155, 177, 202, 214, 236, 258, 280, 302, 324, 346, 438, 687, 694, 734], 'Laboratory,': [35, 47, 69, 91, 113, 135, 157, 179, 204, 216, 238, 260, 282, 304, 326, 348], '893-1': [36, 48, 70, 92, 114, 136, 158, 180, 205, 217, 239, 261, 283, 305, 327, 349], 'Hirai,': [37, 49, 71, 93, 115, 137, 159, 181, 206, 218, 240, 262, 284, 306, 328, 350], 'Kashima,': [38, 50, 72, 94, 116, 138, 160, 182, 207, 219, 241, 263, 285, 307, 329, 351], 'Ibaraki': [39, 51, 73, 95, 117, 139, 161, 183, 208, 220, 242, 264, 286, 308, 330, 352], '314-0012,': [40, 52, 74, 96, 118, 140, 162, 184, 209, 221, 243, 265, 287, 309, 331, 353], 'JapanKashima': [41, 210], 'Japan===Search': [53, 222], 'more': [55, 77, 99, 121, 143, 165, 187, 224, 246, 268, 290, 312, 334, 356], 'papers': [56, 78, 100, 122, 144, 166, 188, 225, 247, 269, 291, 313, 335, 357], 'by': [57, 79, 101, 123, 145, 167, 189, 226, 248, 270, 292, 314, 336, 358, 529], 'this': [58, 80, 102, 124, 146, 168, 190, 227, 249, 271, 293, 315, 337, 359, 422, 518], 'authorH.': [59, 228], 'Saito,': [60, 229], 'Saito': [62, 231, 750, 790], 'JapanSearch': [75, 97, 119, 141, 163, 185, 244, 266, 288, 310, 332, 354], 'authorS.': [81, 250], 'Yamamoto,': [82, 251], 'S.': [83, 252, 604, 821], 'Yamamoto': [84, 253, 746, 814], 'authorM.': [103, 169, 272, 338], 'Ohkawa,': [104, 273], 'M.': [105, 171, 274, 340, 620], 'Ohkawa': [106, 275], 'authorN.': [125, 294], 'Obara,': [126, 295], 'N.': [127, 296], 'Obara': [128, 297, 748], 'authorH-B.': [147, 316], 'Li,': [148, 317], 'H-B.': [149, 318], 'Li': [150, 319], 'Tanaka,': [170, 339], 'Tanaka': [172, 341, 744, 788, 816], 'author': [191, 360], 'First': [361], 'published:': [362], '07': [363], 'April': [364], '2000': [365, 591], 'https://doi.org/10.1002/(SICI)1099-1247(200003/04)18:2<63::AID-SAT651>3.0.CO;2-JCitations:': [366], '5AboutPDF': [367], 'ToolsRequest': [368], 'permissionExport': [369], 'citationAdd': [370], 'to': [371, 393, 416, 447, 479, 503, 533], 'favoritesTrack': [372], 'citation': [373], 'ShareShare': [374], 'Give': [375], 'accessShare': [376, 379], 'full': [377], 'text': [378], 'full-text': [380, 395, 419], 'accessPlease': [381], 'review': [382], 'our': [383], 'Terms': [384, 407], 'Conditions': [386, 409], 'Use': [388], 'check': [390], 'box': [391], 'below': [392, 415], 'share': [394, 417], 'version': [396, 420], 'article.I': [398], 'have': [399], 'read': [400], 'accept': [402], 'the': [403, 413, 481, 490, 494, 508, 513, 520, 530, 572, 581, 628, 651, 685, 767, 802], 'Wiley': [404, 593], 'Online': [405], 'Library': [406], 'UseShareable': [411], 'LinkUse': [412], 'link': [414], 'a': [418, 433, 534, 544], 'article': [423], 'with': [424, 538], 'your': [425], 'friends': [426], 'colleagues.': [428], 'Learn': [429], 'more.Copy': [430], 'URL': [431], 'Share': [432], 'linkShare': [434], 'onEmailFacebookTwitterLinkedInRedditWechat': [435], 'Abstract': [436], 'The': [437], 'Broadcasting': [440, 714], 'Engineering': [441], 'Test': [442], '(COMETS)': [444], 'was': [445, 474, 478, 527], 'developed': [446], 'evaluate': [448], 'Ka-band': [449, 468, 754], '(31/21GHz)': [450], 'millimetre-wave': [452], '(47/44': [453], 'GHz)': [454], 'systems,': [459, 464], '21GHz': [460], 'S-band': [466], 'inter-orbit': [469], 'systems.': [472, 831], 'launched': [475], 'because': [476], 'it': [477], 'become': [480], 'new': [482], '‘bridge’': [483], 'toward': [484], 'technologies': [488], 'in': [489, 568], 'next': [491], 'century,': [492], 'but': [493], 'launch': [495, 515], 'on': [496, 684, 705, 713, 733], '21': [497], 'February': [498], '1998': [499], 'regretfully': [500], 'failed': [501], 'due': [502], 'premature': [504], 'shut': [505], 'down': [506], 'second': [509], 'stage': [510], 'engine': [511, 532], 'H-II': [514], 'rocket.': [516], 'After': [517], 'accident,': [519], 'initial': [521], 'low': [522], 'elliptic': [523, 536], 'orbit': [524, 537], 'improved': [528], 'apogee': [531, 540], 'larger': [535], 'an': [539, 550, 555, 578], 'altitude': [541, 546], '17711km,': [543], 'perigee': [545], '473': [548], 'km,': [549], 'inclination': [551], '30.1°,': [553], 'orbital': [556], 'period': [557], '319': [559], 'min.': [560], 'Original': [561], 'modified': [563], 'experimental': [565], 'plans,': [566], 'countermeasures': [567], 'earth': [569], 'stations': [570], 'orbiting': [573], 'satellite,': [574], 'as': [575, 577], 'well': [576], 'overview': [579], 'ground': [585], 'terminals': [586], 'are': [587], 'presented.': [588], 'Copyright': [589], '©': [590], 'John': [592], '&': [594], 'Sons,': [595], 'Ltd.': [596], 'REFERENCES': [597], '1': [598], 'Ohmori': [599, 820], 'S,': [600, 747, 815], 'H,': [602, 751, 819], 'Kawase': [603], 'Mobile': [605, 630, 644, 653, 792, 804], 'Communications.': [607], 'Artech': [608], 'House:': [609], 'Boston,': [610], '1997.': [611], 'Google': [612, 639, 662, 676, 697, 783, 811, 839], 'Scholar': [613, 640, 663, 677, 698, 720, 742, 784, 812, 840], 'Rafferty': [615], 'W,': [616], 'Dessouky': [617], 'K,': [618, 817], 'Sue': [619], "NASA's": [621], 'development': [624], 'program.': [625], 'Proceedings': [626, 649, 765, 800], 'Conference,': [632, 655, 806], 'Pasadena,': [633, 656], 'CA,': [634, 657], 'NASA/JPL': [635, 658], 'Pub.': [636, 659], '88-9,': [637, 660], '1998.': [638], '3': [641], 'Sward': [642], 'D.,': [643], 'service': [646], 'Canada.': [648], '1988.': [661], '4': [664], 'PROSAT': [665], 'Phase': [666], 'I': [667], 'Report,': [668], 'European': [669], 'Agency,': [671], 'ESA': [672], 'STR-216,': [673], 'May': [674], '1986.': [675], '5': [678], 'Jedrey': [679], 'TC': [680], '(ed.)': [681], 'Special': [682, 703], 'issue': [683, 704], 'Advance': [686], 'Technology': [688], 'Satellite.': [689], '1996;': [695, 715], '14(3).': [696], '6': [699], 'Konishi': [700], 'Y': [701], '(ed.).': [702], 'technical': [707], 'research': [708], 'at': [709], 'NHK.': [710], 'IEEE': [711, 731], 'Transactions': [712, 732, 832], '42(3).': [716], 'Web': [717, 739], 'Science®Google': [719, 741], '7': [721], 'Divsalar': [722], 'D,': [723], 'Simon': [724], 'MK.': [725], 'Multiple-symbol': [726], 'differential': [727], 'detection': [728], 'MPSK.': [730], '1990;': [735], '38(3):': [736], '300–308.': [737], '10.1109/26.48887': [738], '8': [743], 'M,': [745, 789], 'N,': [749], 'Miura': [752], 'R,': [753], 'mobile-vehicular': [755], 'active': [756], 'phased': [757], 'array': [758], 'antenna': [759, 823], 'system': [760], 'communications.': [764], '17th': [768], 'American': [769], 'Institute': [770], 'Aeronautics': [772], 'Astronautics': [774], 'ICSSC,': [775], 'Yokohama,': [776], 'Japan,': [777], '23–': [778], '27': [779], 'February,': [780], '1998;': [781], '431–439.': [782], '9': [785], 'Hase': [786], 'Y,': [787], 'antennas': [793], 'satcom': [798], 'experiment.': [799], 'Ottawa,': [807], 'Canada,': [808], 'June': [809], '1995.': [810], '10': [813], 'An': [822], 'tracking': [824], 'method': [825], 'land': [827], 'communication': [830], 'IEICE': [834], '1994;': [835], 'J77-B-II(6):': [836], '307–316(in': [837], 'Japanese).': [838], 'Citing': [841], 'Literature': [842], 'Volume18,': [843], 'Issue2March/April': [844], '2000Pages': [845], 'ReferencesRelatedInformation': [847]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W4250460179', 'counts_by_year': [{'year': 2023, 'cited_by_count': 1}], 'updated_date': '2024-09-18T05:58:54.966455', 'created_date': '2022-05-12'}