Pith Number

pith:7B5J7GDB

pith:2026:7B5J7GDBJRY7B4MYUNEWFV3DXG

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Estimating Target Doppler in Unsynchronized Multistatic ISAC Deployments with Mobile Nodes

Joerg Widmer, Marco Canil, Michele Rossi, Zaman Bhalli

A mobile transmitter and at least four asynchronous static receivers can estimate target Doppler shifts in multistatic ISAC without external reflectors.

arxiv:2605.16934 v1 · 2026-05-16 · eess.SP · cs.ET

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Claims

C1strongest claim

We present the first method to estimate the Doppler frequency of a target with mobile and asynchronous ISAC nodes in a multistatic configuration, considering the case of a mobile TX and multiple static RXs, and without leveraging any external reflector. We show that the problem is solvable if at least 4 RXs are present.

C2weakest assumption

The assumption that phase offsets remain invariant across multipath components, allowing separation of target-induced Doppler from mobility and asynchrony effects via geometrical relationships. This premise is invoked when describing how the problem becomes solvable with four or more receivers.

C3one line summary

A method estimates target Doppler in unsynchronized multistatic ISAC with mobile TX and static RXs by using invariant phase offsets across multipath components and geometrical relationships, solvable with at least four receivers.

References

16 extracted · 16 resolved · 0 Pith anchors

[1] Framework and overall objectives of the future development of IMT for 2030 (6G) and beyond, 2030

[2] millitrace-ir: Contact tracing and temperature screening via mmwave and infrared sensing, 2022

[3] Jump: Joint communication and sensing with unsynchronized transceivers made practical, 2024

[4] K. Wu, J. Pegoraro, F. Meneghello, J. A. Zhang, J. O. Lacruz, J. Widmer, F. Restuccia, M. Rossi, X. Huang, D. Zhanget al., “Sensing in bistatic isac systems with clock asynchronism: A signal processin 2024

[5] Multiple-target doppler frequency estimation in isac with clock asynchronism, 2024

Receipt and verification

First computed	2026-05-20T00:03:31.644347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f87a9f98614c71f0f198a34962d763b9a6d1707627771374192911deb1c55283

Aliases

arxiv: 2605.16934 · arxiv_version: 2605.16934v1 · doi: 10.48550/arxiv.2605.16934 · pith_short_12: 7B5J7GDBJRY7 · pith_short_16: 7B5J7GDBJRY7B4MY · pith_short_8: 7B5J7GDB

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7B5J7GDBJRY7B4MYUNEWFV3DXG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f87a9f98614c71f0f198a34962d763b9a6d1707627771374192911deb1c55283

Canonical record JSON

{
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    "abstract_canon_sha256": "83594416349505718dce3b8ca459276d502cb5a83daf2abf147d8ea1b49d8267",
    "cross_cats_sorted": [
      "cs.ET"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-16T11:07:30Z",
    "title_canon_sha256": "1fb829f15117f3b990bb4cd0bf6b09e1e1c06c986f37c68843fae4d797471e86"
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  "source": {
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    "kind": "arxiv",
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}