"Gold code" meaning in English

{
  "etymology_text": "Named after Robert Gold.",
  "forms": [
    {
      "form": "Gold codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Gold code (plural Gold codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
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        },
        {
          "kind": "other",
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        }
      ],
      "glosses": [
        "A kind of binary sequence used in telecommunications and satellite navigation, having bounded small cross-correlations within a set, useful when multiple devices are broadcasting in the same frequency range."
      ],
      "id": "en-Gold_code-en-noun-lplgXy6y",
      "links": [
        [
          "binary",
          "binary"
        ],
        [
          "sequence",
          "sequence"
        ],
        [
          "telecommunications",
          "telecommunications"
        ],
        [
          "satellite navigation",
          "satellite navigation"
        ]
      ],
      "synonyms": [
        {
          "word": "Gold sequence"
        }
      ]
    }
  ],
  "word": "Gold code"
}

{
  "etymology_text": "Named after Robert Gold.",
  "forms": [
    {
      "form": "Gold codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Gold code (plural Gold codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A kind of binary sequence used in telecommunications and satellite navigation, having bounded small cross-correlations within a set, useful when multiple devices are broadcasting in the same frequency range."
      ],
      "links": [
        [
          "binary",
          "binary"
        ],
        [
          "sequence",
          "sequence"
        ],
        [
          "telecommunications",
          "telecommunications"
        ],
        [
          "satellite navigation",
          "satellite navigation"
        ]
      ],
      "synonyms": [
        {
          "word": "Gold sequence"
        }
      ]
    }
  ],
  "word": "Gold code"
}